TY  - JOUR
A1  - Alebouyeh Samami, Behzad
A1  - Pieper, Martin
A1  - Breitbach, Gerd
A1  - Hodapp, Josef
T1  - Heat production in the windings of the stators of electric machines under stationary condition
JF  - Heat and mass transfer
N2  - In electric machines due to high currents and resistive losses (joule heating) heat is produced. To avoid damages by overheating the design of effective cooling systems is required. Therefore the knowledge of heat sources and heat transfer processes is necessary. The purpose of this paper is to illustrate a good and effective calculation method for the temperature analysis based on homogenization techniques. These methods have been applied for the stator windings in a slot of an electric machine consisting of copper wires and resin. The key quantity here is an effective thermal conductivity, which characterizes the heterogeneous wire resin-arrangement inside the stator slot. To illustrate the applicability of the method, the analysis of a simplified, homogenized model is compared with the detailed analysis of temperature behavior inside a slot of an electric machine according to the heat generation. We considered here only the stationary situation. The achieved numerical results are accurate and show that the applied homogenization technique works in practice. Finally the results of simulations for the two cases, the original model of the slot and the homogenized model chosen for the slot (unit cell), are compared to experimental results.
Y1  - 2014
U6  - http://dx.doi.org/10.1007/s00231-014-1371-8
SN  - 0947-7411 (Print) ; 1432-1181 (E-Journal)
VL  - 50
SP  - 1707
EP  - 1716
PB  - Springer
CY  - Heidelberg
ER  - 
TY  - JOUR
A1  - Alexopoulos, Spiros
A1  - Breitbach, Gerd
A1  - Hoffschmidt, Bernhard
A1  - Stobbe, P.
T1  - Computational fluid flow of porous resic ceramic filtering modules and optimization of the channel edge form geometry
JF  - Proceedings : April 14 - 18, 2008, Leipzig, Germany / hosted by VDI, Society for Chemical and Process Engineering . Vol 2
Y1  - 2008
N1  - Verein Deutscher Ingenieure ; World Filtration Congress ; (10 : ; 2008.04.14-18 : ; Leipzig) ; WFC ; (10 : ; 2008.04.14-18 : ; Leipzig)
SP  - 300
EP  - 304
PB  - Filtech Exhibitions
CY  - Meerbusch
ER  - 
TY  - JOUR
A1  - Alexopoulos, Spiros
A1  - Breitbach, Gerd
A1  - Hoffschmidt, Bernhard
A1  - Stobbe, P.
T1  - Optimization of the geometry of porous SiC ceramic filtering modules using numerical methods
JF  - Developments in porous, biological and geopolymer ceramics : a collection of papers presented at the 31st International Conference on Advanced Ceramics and Composites, January 21 - 26, 2007, Daytona Beach, Florida ; [papers presented at the Symposium on Porous Ceramics: Novel Developments and Applications] / ed.: Manuel Brito ... Vol. ed.: Jonathan Salem ... The American Ceramics Society
Y1  - 2008
SN  - 9780470196403
N1  - Ceramic engineering and science proceedings ; 28,9
SP  - 95
EP  - 104
PB  - Wiley
CY  - Hoboken, NJ
ER  - 
TY  - JOUR
A1  - Alexopoulos, Spiros
A1  - Hoffschmidt, Bernhard
T1  - Solar tower power plant in Germany and future perspectives of the development of the technology in Greece and Cyprus
JF  - Renewable Energy . 35 (2010), H. 7
Y1  - 2010
SN  - 0960-1481
SP  - 1352
EP  - 1356
ER  - 
TY  - JOUR
A1  - Alexopoulos, Spiros
A1  - Hoffschmidt, Bernhard
T1  - Advances in solar tower technology
JF  - Wiley interdisciplinary reviews : Energy and Environment : WIREs
Y1  - 2017
U6  - http://dx.doi.org/10.1002/wene.217
SN  - 2041-840X
VL  - 6
IS  - 1
SP  - 1
EP  - 19
PB  - Wiley
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Arpshofen, Ingo
A1  - Pool, M. J.
A1  - Sommer, Ferdinand
A1  - Gerling, Ulrich
A1  - Predel, Bruno
A1  - Schultheiss, Emil
T1  - Determination of the integral mixing enthalpies in the Cu-Pd-Si liquid ternary alloy system at 1600 K
JF  - Zeitschrift für Metallkunde : international journal of materials research and advanced techniques. Bd. 74, H. 1
Y1  - 1983
SN  - 0044-3093 ; 0179-4841
SP  - 25
EP  - 32
ER  - 
TY  - JOUR
A1  - Balewski, J.
A1  - Brauksiepe, S.
A1  - Hardt, Arno
T1  - Threshold measurements at the internal experimental facility COSY-11 / J. Balewski [u.a.]
JF  - Nuclear physics A. Vol. 626, iss. 1-2
Y1  - 1997
SN  - 1873-1554 (E-Journal) ; 0375-9474 (Print)
SP  - 85
EP  - 92
ER  - 
TY  - JOUR
A1  - Bansal, N. K.
A1  - Müller, C.
A1  - Vieira, M. E.
A1  - Faber, Christian
A1  - Schwarzer, Klemens
T1  - Thermal performance of a rock bed storage system
JF  - Proceedings : University of Stuttgart, Germany, August 28th until September 1st, 2000 / Terrastock 2000, 8th International Conference on Thermal Energy Storage. Ed.: M. Benner ... - Vol. 1
Y1  - 2000
SN  - 3-9805274-1-7
N1  - Terrastock <2000, Stuttgart>  ; Institut für Thermodynamik und Wärmetechnik <Stuttgart>
SP  - 433
EP  - 439
PB  - Inst. für Thermodynamik und Wärmetechnik
CY  - Stuttgart
ER  - 
TY  - JOUR
A1  - Barsov, S.
A1  - Bechstedt, U.
A1  - Hardt, Arno
T1  - ANKE, a new facility for medium energy hadron physics at COSY-Jülich / S. Barsov [u.a.]
JF  - Nuclear instruments and methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. Vol. 462, iss. 3
Y1  - 2001
SN  - 0167-5087 (Print) ; 0168-9002 (E-journal)
SP  - 364
EP  - 381
ER  - 
TY  - JOUR
A1  - Baumgartner, Werner
A1  - Fidler, Florian
A1  - Weth, Agnes
A1  - Habbecke, Martin
A1  - Jakob, Peter
A1  - Butenweg, Christoph
A1  - Böhme, Wolfgang
T1  - Investigating the locomotion of the sandfish in desert sand using NMR-Imaging
JF  - PLOS ONE
N2  - The sandfish (Scincus scincus) is a lizard having the remarkable ability to move through desert sand for significant distances. It is well adapted to living in loose sand by virtue of a combination of morphological and behavioural specializations. We investigated the bodyform of the sandfish using 3D-laserscanning and explored its locomotion in loose desert sand using fast nuclear magnetic resonance (NMR) imaging. The sandfish exhibits an in-plane meandering motion with a frequency of about 3 Hz and an amplitude of about half its body length accompanied by swimming-like (or trotting) movements of its limbs. No torsion of the body was observed, a movement required for a digging-behaviour. Simple calculations based on the Janssen model for granular material related to our findings on bodyform and locomotor behaviour render a local decompaction of the sand surrounding the moving sandfish very likely. Thus the sand locally behaves as a viscous fluid and not as a solid material. In this fluidised sand the sandfish is able to “swim” using its limbs.
KW  - magnetic resonance imaging
KW  - body limbs
KW  - swimming
KW  - lizards
KW  - deserts
Y1  - 2008
U6  - http://dx.doi.org/10.1371/journal.pone.0003309
SN  - 1932-6203
VL  - 3
IS  - 10
PB  - Plos
CY  - San Francisco, California, US
ER  - 
TY  - JOUR
A1  - Bechstedt, U.
A1  - Haas, H.
A1  - Hacker, U.
A1  - Hardt, Arno
A1  - Henn, K.
A1  - Martin, S.
A1  - Wimmer, J.
T1  - Magnets for the German Spallation Source SNQ
JF  - IEEE transactions on nuclear science. Vol. 32, iss. 5
Y1  - 1985
SN  - 1558-1578 (E-Journal); 0018-9499 (Print)
SP  - 3631
EP  - 3633
ER  - 
TY  - JOUR
A1  - Becker, Meike
A1  - Frauenrath, Tobias
A1  - Hezel, Fabian
A1  - Krombach, Gabriele A.
A1  - Kremer, Ute
A1  - Koppers, Benedikt
A1  - Butenweg, Christoph
A1  - Goemmel, Andreas
A1  - Utting, Jane F.
A1  - Schulz-Menger, Jeanette
A1  - Niendorf, Thoralf
T1  - Comparison of left ventricular function assessment using phonocardiogram- and electrocardiogram-triggered 2D SSFP CINE MR imaging at 1.5 T and 3.0 T
JF  - European Radiology
N2  - Objective: As high-field cardiac MRI (CMR) becomes more widespread the propensity of ECG to interference from electromagnetic fields (EMF) and to magneto-hydrodynamic (MHD) effects increases and with it the motivation for a CMR triggering alternative. This study explores the suitability of acoustic cardiac triggering (ACT) for left ventricular (LV) function assessment in healthy subjects (n=14). Methods: Quantitative analysis of 2D CINE steady-state free precession (SSFP) images was conducted to compare ACT’s performance with vector ECG (VCG). Endocardial border sharpness (EBS) was examined paralleled by quantitative LV function assessment. Results: Unlike VCG, ACT provided signal traces free of interference from EMF or MHD effects. In the case of correct Rwave recognition, VCG-triggered 2D CINE SSFP was immune to cardiac motion effects—even at 3.0 T. However, VCG-triggered 2D SSFP CINE imaging was prone to cardiac motion and EBS degradation if R-wave misregistration occurred. ACT-triggered acquisitions yielded LV parameters (end-diastolic volume (EDV), endsystolic volume (ESV), stroke volume (SV), ejection fraction (EF) and left ventricular mass (LVM)) comparable with those derived fromVCG-triggered acquisitions (1.5 T: ESVVCG=(56± 17) ml, EDVVCG=(151±32)ml, LVMVCG=(97±27) g, SVVCG=(94± 19)ml, EFVCG=(63±5)% cf. ESVACT= (56±18) ml, EDVACT=(147±36) ml, LVMACT=(102±29) g, SVACT=(91± 22) ml, EFACT=(62±6)%; 3.0 T: ESVVCG=(55±21) ml, EDVVCG=(151±32) ml, LVMVCG=(101±27) g, SVVCG=(96±15) ml, EFVCG=(65±7)% cf. ESVACT=(54±20) ml, EDVACT=(146±35) ml, LVMACT= (101±30) g, SVACT=(92±17) ml, EFACT=(64±6)%). Conclusions: ACT’s intrinsic insensitivity to interference from electromagnetic fields renders
KW  - Magnetic resonance imaging (MRI)
KW  - MR-stethoscope
KW  - Magnetic field strength
KW  - Left ventriular function
KW  - Cardiovascular MRI
Y1  - 2010
U6  - http://dx.doi.org/10.1007/s00330-009-1676-z
SN  - 1432-1084 (Onlineausgabe)
SN  - 0938-7994 (Druckausgabe)
VL  - 20
SP  - 1344
EP  - 1355
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Berg-Postweiler, Julia
A1  - Steuer-Dankert, Linda
A1  - Leicht-Scholten, Carmen
T1  - One size does not fit all: Applying antibias trainings in academia
JF  - The International Journal of Organizational Diversity
N2  - Antibias training is increasingly demanded and practiced in academia and industry to increase employees’ sensitivity to discrimination, racism, and diversity. Under the heading of “Diversity Management,” antibias trainings are mainly offered as one-off workshops intending to raise awareness of unconscious biases, create a diversity-affirming corporate culture, promote awareness of the potential of
diversity, and ultimately enable the reflection of diversity in development processes. However, coming from childhood education, research and scientific articles on the sustainable effectiveness of antibias in adulthood, especially in academia, are very scarce. In order to fill this research gap, the article aims to explore how sustainable the effects of individual antibias trainings on participants’ behavior are. In order to investigate this, participant observation in a qualitative pre–post setting was conducted, analyzing antibias training in an academic context. Two observers actively participated in the training sessions and documented the activities and reflection processes of the participants. Overall, the results question the effectiveness of single antibias trainings and show that a target-group adaptive approach is mandatory owing to the background of the approach in early childhood education. Therefore, antibias work needs to be adapted to the target group’s needs and realities of life. Furthermore, the study reveals that single antibias trainings must be embedded in a holistic diversity management approach to stimulate sustainable reflection processes among the target group. This article is one of the first to scientifically evaluate antibias training effectiveness, especially in engineering sciences and the university context.
KW  - Antibias
KW  - Diversity Management
KW  - Organizational Culture
KW  - Engineering Habitus
Y1  - 2023
U6  - http://dx.doi.org/10.18848/2328-6261/CGP/v24i01/1-23
SN  - 2328-6261 (Print)
SN  - 2328-6229 (Online)
VL  - 24
IS  - 1
SP  - 1
EP  - 23
PB  - Common Ground Research Networks
ER  - 
TY  - JOUR
A1  - Blanke, Tobias
A1  - Hagenkamp, Markus
A1  - Döring, Bernd
A1  - Göttsche, Joachim
A1  - Reger, Vitali
A1  - Kuhnhenne, Markus
T1  - Net-exergetic, hydraulic and thermal optimization of coaxial heat exchangers using fixed flow conditions instead of fixed flow rates
JF  - Geothermal Energy
N2  - Previous studies optimized the dimensions of coaxial heat exchangers using constant mass fow rates as a boundary condition. They show a thermal optimal circular ring width of nearly zero. Hydraulically optimal is an inner to outer pipe radius ratio of 0.65 for turbulent and 0.68 for laminar fow types. In contrast, in this study, fow conditions in the circular ring are kept constant (a set of fxed Reynolds numbers) during optimization. This approach ensures fxed fow conditions and prevents inappropriately high or low mass fow rates. The optimization is carried out for three objectives: Maximum energy gain, minimum hydraulic efort and eventually optimum net-exergy balance. The optimization changes the inner pipe radius and mass fow rate but not the Reynolds number of the circular ring. The thermal calculations base on Hellström’s borehole resistance and the hydraulic optimization on individually calculated linear loss of head coefcients. Increasing the inner pipe radius results in decreased hydraulic losses in the inner pipe but increased losses in the circular ring. The net-exergy diference is a key performance indicator and combines thermal and hydraulic calculations. It is the difference between thermal exergy fux and hydraulic efort. The Reynolds number in the circular ring is instead of the mass fow rate constant during all optimizations. The result from a thermal perspective is an optimal width of the circular ring of nearly zero. The hydraulically optimal inner pipe radius is 54% of the outer pipe radius for laminar fow and 60% for turbulent fow scenarios. Net-exergetic optimization shows a predominant infuence of hydraulic losses, especially for small temperature gains. The exact result depends on the earth’s thermal properties and the fow type. Conclusively, coaxial geothermal probes’ design should focus on the hydraulic optimum and take the thermal optimum as a secondary criterion due to the dominating hydraulics.
Y1  - 2021
U6  - http://dx.doi.org/10.1186/s40517-021-00201-3
SN  - 2195-9706
N1  - Corresponding author: Tobias Blanke
VL  - 9
IS  - Article number: 19
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Bouquegneau, Christian
A1  - Kern, Alexander
A1  - Rousseau, Alain
T1  - Lightning safety guidelines
Y1  - 2010
N1  - Ground´2010 International Conference on Grounding and Earthing ; 4th International Conference ond Lightning Physics and Effects, Nov. 2010 Salvador - Brazil
SP  - 1
EP  - 6
ER  - 
TY  - JOUR
A1  - Breitbach, Gerd
A1  - Deschka, S.
A1  - Akiba, M.
T1  - High heat flux tests on brazed divertor components in electron and ion beam test facilities / S. Deschka ;  M. Akiba ; G. Breitbach ...
JF  - International journal of refractory metals and hard materials. 11 (1992), H. 6
Y1  - 1992
SN  - 0263-4368
N1  - 2. ISSN (Druck-Ausg.): 0263-4368
SP  - 367
EP  - 375
ER  - 
TY  - JOUR
A1  - Breitbach, Gerd
A1  - Schmidt-Plutka, A.
A1  - Schubert, F.
A1  - Nickel, H.
T1  - Deformation behaviour of structures exposed at very high temperatures to cyclic thermal and mechanical loadings
JF  - Structural mechanics in reactor technology : transactions of the 12th International Conference on Structural Mechanics in Reactor Technology, Stuttgart, Germany, 15-20 August 1993 / ed. Karl F. Kussmaul. - Bd. L : Inelastic behaviour of solids and structures
Y1  - 1993
SN  - 0-444-81515-5
N1  - SMiRT <12, 1993, Stuttgart>  ; L08/3
SP  - 203
EP  - 208
PB  - Elsevier
CY  - Amsterdam [u.a.]
ER  - 
TY  - JOUR
A1  - Breitbach, Gerd
A1  - Schubert, F.
T1  - A contribution to stress prediction in coatings for gas turbine blades
JF  - Archive of applied mechanics. 73 (2004), H. 9-10
Y1  - 2004
SN  - 0939-1533
N1  - 2. ISSN (Druck-Ausg.): 1432-0681
SP  - 682
EP  - 689
ER  - 
TY  - JOUR
A1  - Breitbach, Gerd
A1  - Wolf, U.
A1  - Deschka, S.
A1  - Nickel, H.
T1  - Thermomechanical analysis of an actively cooled divertor mock up
JF  - Tagungsbericht : Jahrestagung Kerntechnik : Stadthalle Karlsruhe, 5.-7. Mai 1992, Karlsruhe = Proceedings / Kerntechnische Gesellschaft ... [Red.: Karl G. Bauer]. - 1. Aufl., als Ms. gedr..
Y1  - 1992
N1  - Jahrestagung Kerntechnik <1992, Karlsruhe>
SP  - 457
EP  - 461
PB  - INFOFORUM
CY  - Bonn
ER  - 
TY  - JOUR
A1  - Brüssermann, Klaus
T1  - H3 and C14 air monitoring according to KTA 1503.1
JF  - 2. Karlsruhe international conference on analytical chemistry in nuclear technology, Karlsruhe (Germany), 5-9 Jun 1989
Y1  - 1989
ER  - 
TY  - JOUR
A1  - Brüssermann, Klaus
A1  - Ashton, P.
A1  - Leicht, R.
A1  - Martens, B.-R.
T1  - Concept of the Konrad repository documentation system for radioactive wastes (DORA) / Ashton, P.; Leicht, R.; Martens, B.-R.; Giller, H. Brüssermann, K.
JF  - Kerntechnik 94 : Jahrestagung, 17.-19. Mai 1994, Stuttgart: Tagungsbericht = Nuclear technology, annual meeting 94 / Veranst.: Kerntechnische Gesellschaft; Deutsches Atomforum
Y1  - 1994
SP  - 294
EP  - 297
PB  - INFORUM Verl.- u. Verwaltungs-Ges.
CY  - Bonn
ER  - 
TY  - JOUR
A1  - Butenweg, Christoph
A1  - Bursi, Oreste S.
A1  - Paolacci, Fabrizio
A1  - Marinković, Marko
A1  - Lanese, Igor
A1  - Nardin, Chiara
A1  - Quinci, Gianluca
ED  - Yang, J.
T1  - Seismic performance of an industrial multi-storey frame structure with process equipment subjected to shake table testing
JF  - Engineering Structures
N2  - Past earthquakes demonstrated the high vulnerability of industrial facilities equipped with complex process technologies leading to serious damage of process equipment and multiple and simultaneous release of hazardous substances. Nonetheless, current standards for seismic design of industrial facilities are considered inadequate to guarantee proper safety conditions against exceptional events entailing loss of containment and related consequences. On these premises, the SPIF project -Seismic Performance of Multi-Component Systems in Special Risk Industrial Facilities- was proposed within the framework of the European H2020 SERA funding scheme. In detail, the objective of the SPIF project is the investigation of the seismic behaviour of a representative industrial multi-storey frame structure equipped with complex process components by means of shaking table tests. Along this main vein and in a performance-based design perspective, the issues investigated in depth are the interaction between a primary moment resisting frame (MRF) steel structure and secondary process components that influence the performance of the whole system; and a proper check of floor spectra predictions. The evaluation of experimental data clearly shows a favourable performance of the MRF structure, some weaknesses of local details due to the interaction between floor crossbeams and process components and, finally, the overconservatism of current design standards w.r.t. floor spectra predictions.
KW  - Multi-storey
KW  - Frame structure
KW  - Earthquake
KW  - Tank
KW  - Piping
Y1  - 2021
U6  - http://dx.doi.org/10.1016/j.engstruct.2021.112681
SN  - 0141-0296
VL  - 243
IS  - 15
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Butenweg, Christoph
A1  - Marinkovic, Marko
A1  - Kubalski, Thomas
A1  - Klinkel, Sven
T1  - Masonry infilled reinforced concrete frames under  horizontal  loading
T1  - Stahlbetonrahmen mit Ausfachungen aus Mauerwerk unter horizontalen Belastungen
JF  - Mauerwerk
N2  - The behaviour of infilled reinforced concrete frames under horizontal load has been widely investigated, both experimentally and numerically. Since experimental tests represent large investments, numerical simulations offer an efficient approach for a more comprehensive analysis. When RC frames with masonry infill walls are subjected to horizontal loading, their behaviour is highly non-linear after a certain limit, which makes their analysis quite difficult. The non-linear behaviour results from the complex inelastic material properties of the concrete, infill wall and conditions at the wall-frame interface. In order to investigate this non-linear behaviour in detail, a finite element model using a micro modelling approach is developed, which is able to predict the complex non-linear behaviour resulting from the different materials and their interaction. Concrete and bricks are represented by a non-linear material model, while each reinforcement bar is represented as an individual part installed in the concrete part and behaving elasto-plastically. Each brick is modelled individually and connected taking into account the non-linearity of a brick mortar interface. The same approach is followed using two finite element software packages and the results are compared with the experimental results. The numerical models show a good agreement with the experiments in predicting the overall behaviour, but also very good matching for strength capacity and drift. The results emphasize the quality and the valuable contribution of the numerical models for use in parametric studies, which are needed for the derivation of design recommendations for infilled frame structures.
Y1  - 2016
U6  - http://dx.doi.org/10.1002/dama.201600703
SN  - 1437-1022
VL  - 20
IS  - 4
SP  - 305
EP  - 312
PB  - Ernst & Sohn
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Butenweg, Christoph
A1  - Marinkovic, Marko
A1  - Salatic, Ratko
T1  - Experimental results of reinforced concrete frames with masonry infills under combined quasi-static in-plane and out-of-plane seismic loading
JF  - Bulletin of Earthquake Engineering
Y1  - 2019
U6  - http://dx.doi.org/10.1007/s10518-019-00602-7
SN  - 1573-1456
VL  - 17
SP  - 3397
EP  - 3422
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Butenweg, Christoph
A1  - Rosin, Julia
A1  - Holler, Stefan
T1  - Analysis of cylindrical granular material silos under seismic excitation
JF  - Buildings
N2  - Silos generally work as storage structures between supply and demand for various goods, and their structural safety has long been of interest to the civil engineering profession. This is especially true for dynamically loaded silos, e.g., in case of seismic excitation. Particularly thin-walled cylindrical silos are highly vulnerable to seismic induced pressures, which can cause critical buckling phenomena of the silo shell. The analysis of silos can be carried out in two different ways. In the first, the seismic loading is modeled through statically equivalent loads acting on the shell. Alternatively, a time history analysis might be carried out, in which nonlinear phenomena due to the filling as well as the interaction between the shell and the granular material are taken into account. The paper presents a comparison of these approaches. The model used for the nonlinear time history analysis considers the granular material by means of the intergranular strain approach for hypoplasticity theory. The interaction effects between the granular material and the shell is represented by contact elements. Additionally, soil–structure interaction effects are taken into account.
KW  - granular silo
KW  - earthquake engineering
KW  - hypoplasticity
KW  - nonlinear transient analyses
Y1  - 2017
U6  - http://dx.doi.org/10.3390/buildings7030061
SN  - 2075-5309
VL  - 7
IS  - 3
SP  - 1
EP  - 12
PB  - MDPI
CY  - Basel
ER  - 
TY  - JOUR
A1  - Böhm, Stefan
A1  - Hellmanns, Mark
A1  - Backes, Andreas
A1  - Dilger, Klaus
T1  - Lock-in thermography based NDT of parts for the automotive industry
JF  - Journal of adhesion and interface
Y1  - 2006
VL  - Vol. 7
IS  - No. 4
SP  - 10
EP  - 12
ER  - 
TY  - JOUR
A1  - Cheenakula, Dheeraja
A1  - Hoffstadt, Kevin
A1  - Krafft, Simone
A1  - Reinecke, Diana
A1  - Klose, Holger
A1  - Kuperjans, Isabel
A1  - Grömping, Markus
T1  - Anaerobic digestion of algal–bacterial biomass of an Algal Turf Scrubber system
JF  - Biomass Conversion and Biorefinery
N2  - This study investigated the anaerobic digestion of an algal–bacterial biofilm grown in artificial wastewater in an Algal Turf Scrubber (ATS). The ATS system was located in a greenhouse (50°54′19ʺN, 6°24′55ʺE, Germany) and was exposed to seasonal conditions during the experiment period. The methane (CH4) potential of untreated algal–bacterial biofilm (UAB) and thermally pretreated biofilm (PAB) using different microbial inocula was determined by anaerobic batch fermentation. Methane productivity of UAB differed significantly between microbial inocula of digested wastepaper, a mixture of manure and maize silage, anaerobic sewage sludge, and percolated green waste. UAB using sewage sludge as inoculum showed the highest methane productivity. The share of methane in biogas was dependent on inoculum. Using PAB, a strong positive impact on methane productivity was identified for the digested wastepaper (116.4%) and a mixture of manure and maize silage (107.4%) inocula. By contrast, the methane yield was significantly reduced for the digested anaerobic sewage sludge (50.6%) and percolated green waste (43.5%) inocula. To further evaluate the potential of algal–bacterial biofilm for biogas production in wastewater treatment and biogas plants in a circular bioeconomy, scale-up calculations were conducted. It was found that a 0.116 km2 ATS would be required in an average municipal wastewater treatment plant which can be viewed as problematic in terms of space consumption. However, a substantial amount of energy surplus (4.7–12.5 MWh a−1) can be gained through the addition of algal–bacterial biomass to the anaerobic digester of a municipal wastewater treatment plant. Wastewater treatment and subsequent energy production through algae show dominancy over conventional technologies.
KW  - Biogas
KW  - Methane
KW  - Algal Turf Scrubber
KW  - Algal–bacterial bioflm
KW  - Circular bioeconomy
Y1  - 2022
U6  - http://dx.doi.org/10.1007/s13399-022-03236-z
SN  - 2190-6823
N1  - Corresponding author: Dheeraja Cheenakula
VL  - 13
SP  - 15 Seiten
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Chen, Tao
A1  - Clauser, Christoph
A1  - Marquart, Gabriele
A1  - Willbrand, Karen
A1  - Mottaghy, Darius
T1  - A new upscaling method for fractured porous media
JF  - Advances in Water Resources
Y1  - 2015
U6  - http://dx.doi.org/10.1016/j.advwatres.2015.03.009
SN  - 0309-1708
N1  - Corrigendum 2019:
https://doi.org/10.1016/j.advwatres.2019.01.004
VL  - 80
SP  - 60
EP  - 68
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Chudoba, Rostislav
A1  - Butenweg, Christoph
A1  - Peiffer, F.
T1  - Technical information system for collaborative material research
JF  - Advances in engineering software
Y1  - 2004
U6  - http://dx.doi.org/10.1016/j.advengsoft.2004.03.021
SN  - 1873-5339 (E-Journal); 0965-9978 (Print)
VL  - Volume 35
IS  - Issue 10-11
SP  - 747
EP  - 756
ER  - 
TY  - JOUR
A1  - Darmo, J.
A1  - Schäffer, F.
A1  - Förster, Arnold
A1  - Kordos, P.
T1  - Beryllium doped low-temperature-grown MBE GaAs: material for photomixing in the THz frequency range
JF  - ASDAM 2000 : conference proceedings / edited by Jozef Osvald ... [et al.]
Y1  - 2000
SN  - 0780359399
N1  - International Conference on Advanced Semiconductor Devices and Microsystems ; (3rd : ; 2000 : ; Smolenice, Slovakia)
SP  - 147
EP  - 150
PB  - IEEE
CY  - Piscataway, NJ
ER  - 
TY  - JOUR
A1  - Dellmann, Sophia Florence
A1  - Glorius, J.
A1  - Litvinov, Yu A.
A1  - Reifarth, R.
A1  - Al-Khasawneh, Kafa
A1  - Aliotta, M.
A1  - Bott, L.
A1  - Brückner, Benjamin
A1  - Bruno, C. G.
A1  - Chen, Ruijiu
A1  - Davinson, T.
A1  - Dickel, T.
A1  - Dillmann, Iris
A1  - Dmytriev, D.
A1  - Erbacher, P.
A1  - Freire-Fernández, D.
A1  - Forstner, Oliver
A1  - Geissel, H.
A1  - Göbel, K.
A1  - Griffin, Christopher J.
A1  - Grisenti, R.
A1  - Gumberidze, Alexandre
A1  - Haettner, Emma
A1  - Hagmann, Siegbert
A1  - Heil, M.
A1  - Heß, R.
A1  - Hillenbrand, P.-M.
A1  - Joseph, R.
A1  - Jurado, B.
A1  - Kozhuharov, Christophor
A1  - Kulikov, I.
A1  - Löher, Bastian
A1  - Langer, Christoph
A1  - Leckenby, Guy
A1  - Lederer-Woods, C.
A1  - Lestinsky, M.
A1  - Litvinov, S. A.
A1  - Lorenz, B. A.
A1  - Lorenz, E.
A1  - Marsh, J.
A1  - Menz, Esther Babette
A1  - Morgenroth, T.
A1  - Petridis, N.
A1  - Pibernat, Jerome
A1  - Popp, U.
A1  - Psaltis, Athanasios
A1  - Sanjari, Shahab
A1  - Scheidenberger, C.
A1  - Sguazzin, M.
A1  - Sidhu, Ragandeep Singh
A1  - Spillmann, Uwe
A1  - Steck, M.
A1  - Stöhlker, T.
A1  - Surzhykov, A.
A1  - Swartz, J. A.
A1  - Törnqvist, H.
A1  - Varga, L.
A1  - Vescovi, Diego
A1  - Weick, H.
A1  - Weigand, M.
A1  - Woods, P.
A1  - Xing, Y.
A1  - Yamaguchi, Taiyo
T1  - Proton capture on stored radioactive ¹¹⁸Te ions
JF  - EPJ Web of Conferences
N2  - Experimental determination of the cross sections of proton capture on radioactive nuclei is extremely difficult. Therefore, it is of substantial interest for the understanding of the production of the p-nuclei. For the first time, a direct measurement of proton-capture cross sections on stored, radioactive ions became possible in an energy range of interest for nuclear astrophysics. The experiment was performed at the Experimental Storage Ring (ESR) at GSI by making use of a sensitive method to measure (p,γ) and (p,n) reactions in inverse kinematics. These reaction channels are of high relevance for the nucleosyn-thesis processes in supernovae, which are among the most violent explosions in the universe and are not yet well understood. The cross section of the ¹¹⁸Te(p,γ) reaction has been measured at energies of 6 MeV/u and 7 MeV/u. The heavy ions interacted with a hydrogen gas jet target. The radiative recombination process of the fully stripped ¹¹⁸Te ions and electrons from the hydrogen target was used as a luminosity monitor. An overview of the experimental method and preliminary results from the ongoing analysis will be presented.
Y1  - 2023
U6  - http://dx.doi.org/10.1051/epjconf/202327911018
SN  - 2100-014X
N1  - Volume 279, 2023. Nuclear Physics in Astrophysics – X (NPA-X 2022).
VL  - 279
IS  - Article Number: 11018
SP  - 1
EP  - 5
PB  - EDP Sciences
ER  - 
TY  - JOUR
A1  - Dotzauer, Martin
A1  - Pfeiffer, Diana
A1  - Lauer, Markus
A1  - Pohl, Marcel
A1  - Mauky, Eric
A1  - Bär, Katharina
A1  - Sonnleitner, Matthias
A1  - Zörner, Wilfried
A1  - Hudde, Jessica
A1  - Schwarz, Björn
A1  - Faßauer, Burkhardt
A1  - Dahmen, Markus
A1  - Rieke, Christian
A1  - Herbert, Johannes
A1  - Thrän, Daniela
T1  - How to measure flexibility – Performance indicators for demand driven power generation from biogas plants
JF  - Renewable Energy
Y1  - 2019
U6  - http://dx.doi.org/10.1016/j.renene.2018.10.021
SN  - 0960-1481
SP  - 135
EP  - 146
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Edip, K.
A1  - Sesov, V.
A1  - Butenweg, Christoph
A1  - Bojadjieva, J.
T1  - Development of coupled numerical model for simulation of multiphase soil
JF  - Computers and Geotechnics
N2  - In this paper, a coupled multiphase model considering both non-linearities of water retention curves and solid state modeling is proposed. The solid displacements and the pressures of both water and air phases are unknowns of the proposed model. The finite element method is used to solve the governing differential equations. The proposed method is demonstrated through simulation of seepage test and partially consolidation problem. Then, implementation of the model is done by using hypoplasticity for the solid phase and analyzing the fully saturated triaxial experiments. In integration of the constitutive law error controlling is improved and comparisons done accordingly. In this work, the advantages and limitations of the numerical model are discussed.
Y1  - 2018
U6  - http://dx.doi.org/10.1016/j.compgeo.2017.08.016
SN  - 0266-352X
VL  - 96
SP  - 118
EP  - 131
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Edip, Kemal
A1  - Garevski, Mihail
A1  - Butenweg, Christoph
A1  - Sesov, Vlatko
A1  - Cvetanovska, Julijana
A1  - Gjorgiev, Igor
T1  - Numerical simulation of geotechnical problems by coupled finite and infinite elements
JF  - Journal of civil engineering and architecture
Y1  - 2013
SN  - 1934-7359 (E-Journal)
VL  - 7
IS  - 1
SP  - 68
EP  - 77
PB  - David Publishing
CY  - Libertyville
ER  - 
TY  - JOUR
A1  - Ewe, Hendrik
A1  - Klein, Peter
A1  - Pieper, Martin
A1  - Füldner, G.
T1  - Heat conductivity in sintered aluminium fibers
JF  - Cellular metals for structural and functional applications : CELLMET 2008 ; proceedings of the International Symposium on Cellular Metals for Structural and Functional Applications held October 8 - 10, 2008 in Dresden, Germany / ed. by Günter Stephani
Y1  - 2009
SP  - 187
EP  - 193
PB  - Fraunhofer IFAM
CY  - Dresden
ER  - 
TY  - JOUR
A1  - Fischer, W. A.
A1  - Dören, Horst-Peter
A1  - Janke, Dieter
T1  - Aluminium nitride probes for application in iron melts
JF  - Archiv für das Eisenhüttenwesen. 52 (1981), H. 3
Y1  - 1981
SN  - 0003-8962
SP  - 91
EP  - 98
ER  - 
TY  - JOUR
A1  - Fleischhaker, Robert
A1  - Evers, Jörg
T1  - A Maxwell–Schrödinger solver for quantum optical few-level systems
JF  - Computer Physics Communications
N2  - The msprop program presented in this work is capable of solving the Maxwell–Schrödinger equations for one or several laser fields propagating through a medium of quantum optical few-level systems in one spatial dimension and in time. In particular, it allows to numerically treat systems in which a laser field interacts with the medium with both its electric and magnetic component at the same time. The internal dynamics of the few-level system is modeled by a quantum optical master equation which includes coherent processes due to optical transitions driven by the laser fields as well as incoherent processes due to decay and dephasing. The propagation dynamics of the laser fields is treated in slowly varying envelope approximation resulting in a first order wave equation for each laser field envelope function. The program employs an Adams predictor formula second order in time to integrate the quantum optical master equation and a Lax–Wendroff scheme second order in space and time to evolve the wave equations for the fields. The source function in the Lax–Wendroff scheme is specifically adapted to allow taking into account the simultaneous coupling of a laser field to the polarization and the magnetization of the medium. To reduce execution time, a customized data structure is implemented and explained. In three examples the features of the program are demonstrated and the treatment of a system with a phase-dependent cross coupling of the electric and magnetic field component of a laser field is shown.
Y1  - 2011
U6  - http://dx.doi.org/10.1016/j.cpc.2010.10.018
SN  - 0010-4655
VL  - 182
IS  - 3
SP  - 739
EP  - 747
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Fleischhaker, Robert
A1  - Evers, Jörg
T1  - Nonlinear effects in pulse propagation through Doppler-broadened closed-loop atomic media
JF  - Physical Review A - Atomic, molecular, and optical physics
Y1  - 2008
U6  - http://dx.doi.org/10.1103/PhysRevA.77.043805
SN  - 1050-2947
VL  - 77
IS  - 4
SP  - 043805
ER  - 
TY  - JOUR
A1  - Fleischhaker, Robert
A1  - Evers, Jörg
T1  - Four-wave mixing enhanced white-light cavity
JF  - Physical Review A - Atomic, molecular, and optical physics
Y1  - 2008
SN  - 0556-2791
VL  - 78
IS  - 5
SP  - 051802(R)
ER  - 
TY  - JOUR
A1  - Fleischhaker, Robert
A1  - Evers, Jörg
A1  - Dey, Tarak N.
T1  - Phase modulation induced by cooperative effects in electromagnetically induced transparency
JF  - Physical Review A - Atomic, molecular, and optical physics
N2  - We analyze the influence of dipole-dipole interactions in an electromagnetically induced transparency set up for a density at the onset of cooperative effects. To this end, we include mean-field models for the influence of local-field corrections and radiation trapping into our calculation. We show both analytically and numerically that the polarization contribution to the local field strongly modulates the phase of a weak pulse. We give an intuitive explanation for this local-field-induced phase modulation and demonstrate that it distinctively differs from the nonlinear self-phase-modulation that a strong pulse experiences in a Kerr medium.
Y1  - 2010
U6  - http://dx.doi.org/10.1103/PhysRevA.82.013815
SN  - 1050-2947
VL  - 82
IS  - 1
PB  - AIP Publishing
CY  - Melville, NY
ER  - 
TY  - JOUR
A1  - Fleischhaker, Robert
A1  - Krauß, Nico
A1  - Schättiger, Farina
A1  - Dekorsy, Thomas
T1  - Consistent characterization of semiconductor saturable absorber mirrors with singe-pulse and pump-probe spectroscopy
JF  - Optics Express
Y1  - 2013
U6  - http://dx.doi.org/10.1364/OE.21.006764
SN  - 1094-4087
VL  - 21
IS  - 6
SP  - 6764
EP  - 6776
PB  - Optica
CY  - Washington, DC
ER  - 
TY  - JOUR
A1  - Frauenrath, Tobias
A1  - Hezel, Fabian
A1  - Heinrichs, Uwe
A1  - Kozerke, Sebastian
A1  - Utting, Jane
A1  - Kob, Malte
A1  - Butenweg, Christoph
A1  - Boesiger, Peter
A1  - Niendorf, Thoralf
T1  - Feasibility of Cardiac Gating Free of Interference With Electro-Magnetic Fields at 1.5 Tesla, 3.0 Tesla and 7.0 Tesla Using an MR-Stethoscope
JF  - Investigative Radiology
KW  - phonocardiogram
KW  - electrocardiogram
KW  - cardiac gating
KW  - high field MR imaging
KW  - cardiovascular MR imaging
Y1  - 2009
U6  - http://dx.doi.org/10.1097/RLI.0b013e3181b4c15e
SN  - 1536-0210 (online)
SN  - 0020-9996 (gedruckt)
VL  - 44
IS  - 9
SP  - 539
EP  - 547
PB  - Lippincott Williams & Wilkins ; (via Ovid)
CY  - Philadelphia, Pa
ER  - 
TY  - JOUR
A1  - Förster, Arnold
T1  - Ultrahigh frequency measurements of magnetic penetration length and surface impedance of YBa2Cu3O7–x microstriplines on Si and GaAs substrates . Rüders, F; Hollricher, O.;  Copetti, C. A. ; Förster,  A. ; Buchal, Ch. ; Prusseit, W.  ; Kinder, H.
JF  - Journal of Applied Physics. 77 (1995), H. 10
Y1  - 1995
SN  - 1089-7550
SP  - 5282
EP  - 5286
ER  - 
TY  - JOUR
A1  - Förster, Arnold
T1  - Layer Deposition I
JF  - Fundamentals of nanoelectronics / Stefan Blügel ... (ed.). - (Lecture manuscripts of the ... Spring School of the Department of Solid State Research ; 34). - (Schriften des Forschungszentrums Jülich : Materie und Material ; 14 ; 34)
Y1  - 2003
SN  - 3-89336-319-X
SP  - C2.1
EP  - C2.13
PB  - Forschungszentrum, Zentralbibliothek
CY  - Jülich
ER  - 
TY  - JOUR
A1  - Förster, Arnold
T1  - Resonant tunneling diodes operating as modern quantum transport devices
JF  - Proceedings of the Tenth International Workshop on the Physics of Semiconductor Devices : (December 14 - 18, 1999) / ed.: Vikram Kumar ... - Vol. 2
Y1  - 2000
SN  - 81-7023-998-2
N1  - International Workshop on the Physics of Semiconductor Devices <10, 1999, Delhi>
SP  - 966
EP  - 966
PB  - Allied Publ.
CY  - New Delhi [u.a.]
ER  - 
TY  - JOUR
A1  - Förster, Arnold
T1  - Resonant tunneling diodes : the effect of structural properties on their performance
JF  - Festkörperprobleme = Advances in solid state physics. 33 (1994)
Y1  - 1994
SN  - 0065-3357
N1  - Review ; 2. ISSN: 0430-3393
SP  - 37
EP  - 62
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Adam, R.
A1  - Mikulics, M.
A1  - Schelten, J.
T1  - Fabrication and subpicosecond optical response of low-temperature-grown GaAs freestanding photoconductive devices. Adam, R.; Mikulics, M.; Forster, A.; Schelten, J.; Siegel, M.; Kordos, P.; Zheng, X.; Wu, S.; Sobolewski, R.
JF  - Applied Physics Letters. 81 (2002), H. 18
Y1  - 2002
SN  - 1077-3118
SP  - 3485
EP  - 3487
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Appenzeller, J.
A1  - Schroer, C.
T1  - Electron interference in a T-shaped quantum transistor based on Schottky-gate technology / J. Appenzeller ; Ch. Schroer ; Th. Schäpers ... A. Förster ...
JF  - Physical review / B, Condensed matter and materials physics. 53 (1996), H. 15
Y1  - 1996
SN  - 1095-3795
SP  - 9959
EP  - 9963
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Belyaev, A. E.
A1  - Vitusevich, S.A.
A1  - Eaves, L.
T1  - Photoresponse spectra in p-i-n diodes containing quantum dots. Belyaev, A.E.; Vitusevich, S.A.; Eaves, L.; Main, P.C.; Henini, M.; Förster, A.; Reetz, W.; Danylyuk, S.V.
JF  - Nanotechnology. 13 (2002), H. 1
Y1  - 2002
SP  - 94
EP  - 96
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Bertuccio, G.
A1  - Pullia, A.
T1  - Pixel X-ray detectors in epitaxial gallium arsenide withhigh-energy resolution capabilities (Fano factor experimentaldetermination) /  G. Bertuccio ; A. Pullia ; J. Lauter ; A. Förster ...
JF  - IEEE transactions on nuclear science. 44 (1997), H. 1
Y1  - 1997
SN  - 0018-9499
SP  - 1
EP  - 5
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Betko, J.
A1  - Kordos, P.
A1  - Kuklovsky, S.
T1  - Electrical properties of molecular beam epitaxial GaAs layers grown at low temperature / J. Betko ; P. Kordos ; S. Kuklovsky ; A. Förster ...
JF  - Materials science and engineering B: Solid&#150; state materials for advanced technology. 28 (1994), H. 1-3
Y1  - 1994
SN  - 0921-5107
SP  - 147
EP  - 150
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Betko, J.
A1  - Morvic, M.
A1  - Novak, J.
T1  - Magnetoresistance in low-temperature grown molecular-beam epitaxial GaAs. Betko, J.; Morvic, M.; Novak, J.; Förster, A.; Kordos, P.
JF  - Journal of Applied Physics. 86 (1999), H. 11
Y1  - 1999
SN  - 1089-7550
SP  - 6243
EP  - 6248
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Betko, J.
A1  - Morvic, M.
A1  - Novak, J.
T1  - Hall mobility analysis in low-temperature-grown molecular-beam epitaxial GaAs / J. Betko , M. Morvic ; J. Novák ... A. Förster ...
JF  - Applied physics letters. 69 (1996), H. 17
Y1  - 1996
SN  - 0003-6951
N1  - ISSN der E-Ausg.: 1077-3118
SP  - 2563
EP  - 2565
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Brugger, H.
A1  - Meiners, U.
T1  - High quality GaAs-based resonant tunneling diodes for high frequency device applications / H. Brugger ; U. Meiners ; C. Wölk ... A. Förster ...
JF  - Proceedings : August 5 - 7, 1991, Cornell University, Ithaca, New York / R. J. Trew, General Chairman
Y1  - 1991
SN  - 0-7803-0491-8
N1  - Cornell Conference on Advanced Concepts in High Speed Semiconductor Devices and Circuits <1991, Ithaca, NY>
SP  - 39
EP  - ff.
PB  - Inst. of Electrical and Electronics Engineers
CY  - Piscataway, NJ
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Brugger, H.
A1  - Meiners, U.
A1  - Diniz, R.
T1  - Hydrostatic pressure sensors based on solid state tunneling devices / H. Brugger; U. Meiners ; R. Diniz ... A. Förster ...
JF  - Solid state electronics. 37 (1994), H. 4-6
Y1  - 1994
SN  - 0038-1101
SP  - 801
EP  - 804
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Cambel, V.
A1  - Kicin, S.
A1  - Kuliffayová, M.
T1  - Preparation of patterned GaAs structures for MEMS and MOEMS. Cambel, V.; Kicin, S.; Kuliffayová, M.; Kovácová, E.; Novák, J.; Kostic, I.; Förster, A.
JF  - Materials Science and Engineering: C. 19 (2002), H. 2
Y1  - 2002
SN  - 0928-4931
SP  - 161
EP  - 165
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Darmo, J.
A1  - Dubecky, F.
A1  - Kordos, P.
T1  - Annealing effect on concentration of EL6-like deep-level state in low-temperature-grown molecular beam epitaxial GaAs. Darmo, J.; Dubecky, F.; Kordos, P.; Förster, A.
JF  - Applied Physics Letters. 72 (1998), H. 5
Y1  - 1998
SN  - 1077-3118
SP  - 590
EP  - 592
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Darmo, J.
A1  - Dubecký, F.
A1  - Kordos, P.
T1  - Annealing characteristics of native defects in low-temperature-grown MBE GaAs / J. Darmo ; F. Dubecky ; P. Kordos ; A. Förster
JF  - Semiconducting and insulating materials 1996 : proceedings of the 9th Conference on Semiconducting and Insulating Materials (SIMC '9), April 29 - May 3, 1996, Toulouse, France / [IEEE]
Y1  - 1996
SN  - 0-7803-3095-1
N1  - 2. ISBN: 0-7803-3179-6 ; Conference on Semiconducting and Insulating Materials <9, 1996, Toulouse> ; Institute of Electrical and Electronics Engineers ; IEEE Cat. No.96CH35881
SP  - 67
EP  - ff.
CY  - Piscataway, NJ [u.a.]
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Darmo, J.
A1  - Dubecký, F.
A1  - Kordos, P.
T1  - Deep-level states and electrical properties of GaAs grown at 250 °C / J. Darmo ; F. Dubecký ; P. Kordos ; A. Förster ...
JF  - Materials science and engineering B: Solid&#150; state materials for advanced technology. 28 (1994), H. 1-3
Y1  - 1994
SN  - 0921-5107
SP  - 393
EP  - 396
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Darmo, J.
A1  - Schafer, F.
A1  - Kordos, P.
T1  - Thermal resistance of the semiconductor structures for a photomixing device. Darmo, J.; Schafer, F.; Forster, A.; Kordos, P.; Gusten, R
JF  - Conference proceedings : Smolenice Castle, Slovakia, October 14 - 16, 2002 / [organizers: Microelectronics Department, Faculty of Electrical Engineering and Information Technology, Slovak University of Technology, Bratislava]. Ed. by Juraj Breza
Y1  - 2002
SN  - 0-7803-7276-X
N1  - International Conference on Advanced Semiconductor Devices and Microsystems ; (4, 2002, Smolenice). ASDAM '02 ; (4 : ; 2002.10.14-16 : ; Smolenice)
SP  - 87
EP  - 90
PB  - IEEE Operations Center
CY  - Piscataway, NJ
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Dekorsy, T.
A1  - Kim, A. T. M.
T1  - Subpicosecond coherent carrier-phonon dynamics in semiconductor heterostructures / T. Dekorsy ; A. M. T. Kim ; G. C. Cho ... A. Förster
JF  - Physical review / B, Condensed matter and materials physics. 53 (1996), H. 3
Y1  - 1996
SN  - 1095-3795
SP  - 1531
EP  - 1538
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Dieker, C.
A1  - Gerthsen, D.
T1  - Microstructure of the AlAs/GaAs and AlAs/InGaAs resonant tunneling diodes and its correlation with the electrical properties / C. Dieker ; D. Gerthsen ; A. Förster ...
JF  - Microscopy of semiconducting materials 1993 : proceedings of the Royal Microscopical Society Conference held at Oxford University, 5 - 8 April 1993 / ed. by A. G. Cullis ... - (Conference series / Institute of Physics ; 134)
Y1  - 1993
SN  - 0-7503-0290-9
N1  - Royal Microscopical Society Conference on Microscopy of Semiconducting Materials <8, 1993, Oxford> ; MSM <8, 1993, Oxford>
SP  - 253
EP  - ff.
PB  - Institute of Physics
CY  - Bristol [u.a.]
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Dubecky, F..
A1  - Darmo, J.
T1  - Investigation of deep-level states in bulk and low temperature MBE semiinsulating GaAs by admittance transient spectroscopy /  F. Dubecky ; J. Darmo ; M. Darviras ; A. Förster ...
JF  - Semi-insulating III-V materials, Ixtapa, Mexico 1992 : proceedings of the 7th Conference on Semi-insulating III-V Materials, Ixtapa, Mexico, 21 - 24 April 1992 / ed. by C. J. Miner ...
Y1  - 1994
SN  - 0-7503-0242-9
N1  - Conference on Semi-Insulating III-V Materials <7, 1992, Ixtapa>
SP  - 265
EP  - 272
PB  - Inst. of Physics Publ.
CY  - Bristol [u.a.]
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Döhler, G. H
A1  - Heber, J.
T1  - Hot electrons in n-i-p.i-based devices / G. H. Döhler ; J. Heber ... A. Förster ...
JF  - Hot electrons in semiconductors : physics and devices / ed. by N. Balkan. - (Series on semiconductor science and technology ; 5)
Y1  - 1998
SN  - 0-19-850058-0
SP  - 478
EP  - 504
PB  - Clarendon Press
CY  - Oxford
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Griebel, M.
A1  - Indlekofer, K. M.
A1  - Lüth, H.
T1  - Transport properties of gated resonant tunneling diodes in the single electron regime. Griebel, M.; Indlekofer,  K. M.; Förster, A.; Lüth, H.
JF  - Journal of Applied Physics. 84 (1998), H. 12
Y1  - 1998
SN  - 1089-7550
SP  - 6719
EP  - 6724
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Griebel, M.
A1  - Indlekofer, K.M.
A1  - Lüth, H.
T1  - Single electron transport in resonant tunnelling diodes laterally confined by ion implantation. Griebel, M.; Indlekofer, K.M.; Förster, A.; Lüth, H.
JF  - Journal of  Physics D: Applied  Physics. 32 (1999), H. 14
Y1  - 1999
SN  - 1361-6463
SP  - 1729
EP  - 1733
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Griebel, M.
A1  - Indlekofer, M.
A1  - Lüth, H.
T1  - Transport through a buried double barrier single electron transistor at low temperatures
JF  - Physica E: Low-dimensional Systems and Nanostructures. 2 (1998), H. 1-4
Y1  - 1998
SN  - 1386-9477
SP  - 502
EP  - 506
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Hardtdegen, Hilde
A1  - Ungermanns, C.
T1  - Comparative investigation of electrical and optical characteristics of AlxGa1-xAs/GaAs structures deposited by LP-MOVPE and MBE / H. Hardtdegen ; M. Hollfelder ; C. Ungermanns ... A. Förster ...
JF  - Compound semiconductors, 1994 : proceedings of the twenty-first International Symposium on Compound Semiconductors held in San Diego, California, 18 - 22 September, 1994 / ed. by Herb Goronkin ... - (Conference series / Institute of Physics ; 141)
Y1  - 1995
SN  - 0-7503-0226-7
N1  - International Symposium on Compound Semiconductors <21, 1994, San Diego, Calif.> ;  Institute of Physics <London>
SP  - 81
EP  - ff.
PB  - Institute of Physics
CY  - Bristol [u.a.]
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Hartmann, A.
A1  - Dieker, Ch.
A1  - Hollfelder, M.
T1  - Spontaneous formation of tilted AlGaAS/GaAs superlattice during AlGaAs growth. Hartmann, A.; Dieker, Ch.; Hollfelder, M.; Hardtdegen, H.; Förster, A.; Lüth, H.
JF  - Applied Surface Science. 123-124 (1998)
Y1  - 1998
SN  - 0169-4332
N1  - = Proceedings of the Sixth International Conference on the Formation of Semiconductor Interfaces
SP  - 704
EP  - 709
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Hauke, M.
A1  - Jakumeit, J.
A1  - Krafft, B.
T1  - DX Centers in Al0.3Ga0.7As/GaAs Analyzed by Point Contact Measurements. Hauke, M.; Jakumeit, J.; Krafft, B.; Nimtz, G.; Förster, A.; Lüth, H.
JF  - Journal of Applied Physics. 84 (1998), H. 4
Y1  - 1998
SN  - 1089-7550
SP  - 2034
EP  - 2039
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Hu, Quing
A1  - Verghese, S.
T1  - High-frequency (f ~ 1 THz) studies of quantum-effect devices / Qing Hu ; S. Verghese ; R. A. Wyss ... A. Förster
JF  - Semiconductor science and technology. 11 (1996), H. 12
Y1  - 1996
SN  - 1361-6641
SP  - 1888
EP  - 1894
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Indlekofer, K.
A1  - Lange, J.
T1  - Theory of single-electron tunneling in resonant-tunneling diodes including scattering and multiple subbands at finite temperature / K. M. Indlekofer ; J. Lange ; A. Förster ...
JF  - Physical review / B, Condensed matter and materials physics. 53 (1996), H. 11
Y1  - 1996
SN  - 1095-3795
SP  - 7392
EP  - 7402
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Indlekofer, K.M.
A1  - Lüth, H.
T1  - Density-matrix description of a quantum dot system with variable lateral confinement in the single-electron tunneling regime. Indlekofer, K.M.; Förster, A.; Lüth, H.
JF  - Physica B: Condensed Matter. 314 (2002), H. 1-4
Y1  - 2002
SN  - 0921-4526
SP  - 499
EP  - 502
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Janssen, G.
A1  - Roer, T. G. van de
T1  - Logic Circuits with reduced complexity based on devices with higher functionality / G. Janssen ; T. G. van de Roer ; W. Prost ... A. Förster
JF  - Proceedings / STW/SAFE 2nd Annual Workshop on Semiconductor Advances for Future Electronics, Safe '99 - ProRISC/IEEE 10th Annual Workshop on Circuits, Systems and Signal Processing, ProRISC 99 : November 24 - 26, 1999, Mierlo, The Netherlands [Elektronische Ressource]
Y1  - 1999
N1  - SAFE <2, 1999, Mierlo> ; Workshop on Circuits, Systems and Signal Processing <10, 1999, Mierlo> ; Stichting voor de Technische Wetenschappen
SP  - 219
PB  - Technology Foundation, STW
CY  - Utrecht
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Kicin, S
A1  - Cambel, V.
A1  - Kuliffayova, M.
T1  - Fabrication of GaAs symmetric pyramidal mesas prepared by wet-chemical etching using AlAs interlayer. Kicin, S.; Cambel, V.; Kuliffayova, M.; Gregusova, D.; Kovacova, E.; Novak, J.; Kostic, I.; Forster, A.
JF  - Journal of Applied Physics. 91 (2002), H. 2
Y1  - 2002
SN  - 1089-7550
SP  - 878
EP  - 880
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Kiesslich, G.
A1  - Wacker, A.
A1  - Scholl, E.
T1  - Nonlinear charging effect of quantum dots in a p-i-n diode. Kiesslich, G.; Wacker, A.; Scholl, E.; Vitusevich, S.A.; Belyaev, A.E.; Danylyuk, S.V.; Forster, A.; Klein, N.; Henini, M.
JF  - Physical Review B. 68 (2003)
Y1  - 2003
SN  - 1550-235X
N1  - 125331 (6 Seiten)
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Klemradt, U.
A1  - Funke, M.
A1  - Fromm, M
T1  - Growth-induced interface roughness of GaAs/AlAs-layers studied by X-ray scattering under grazing angles / U. Klemradt ; M. Funke ; M. Fromm ... A Förster
JF  - Physica B: condensed matter. 221 (1996), H. 1-4
Y1  - 1996
SN  - 0921-4526
SP  - 27
EP  - 33
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Kohleick, R.
A1  - Lüth, H.
T1  - Ga segregation and the effect of Si and Ge interlayers at the GaAs(100)/AlAs heterostructure  / R. Kohleick ; A. Förster ; H. Lüth
JF  - Physical Review B . 48 (1993), H. 20
Y1  - 1993
SN  - 0163-1829
N1  - 2. ISSN: 1098-0121 ; ISSN der E-Ausg.: 1095-3795
SP  - 15138
EP  - 15143
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Kordos, P.
A1  - Betko, J.
T1  - Semi-insulating GaAs layers grown by molecular-beam epitaxy /  P. Kordos ; A. Förster ; J. Betko ...
JF  - Applied physics letters. 67 (1995), H. 7
Y1  - 1995
SN  - 0003-6951
N1  - ISSN der E-Ausg.: 1077-3118
SP  - 983
EP  - 985
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Kordos, P.
A1  - Betko, J.
T1  - Electrical and structural characterization of MBE GaAs grown at temperatures between 200 and 600 °C / P. Kordos ; J. Betko; A. Förster ...
JF  - Compound semiconductors, 1994 : proceedings of the twenty-first International Symposium on Compound Semiconductors held in San Diego, California, 18 - 22 September, 1994 / ed. by Herb Goronkin ... - (Conference series / Institute of Physics ; 141)
Y1  - 1995
SN  - 0-7503-0226-7
N1  - International Symposium on Compound Semiconductors <21, 1994, San Diego, Calif.> ;  Institute of Physics <London>
SP  - 295
EP  - ff.
PB  - Institute of Physics
CY  - Bristol [u.a.]
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Kordos, P.
A1  - Marso, M.
T1  - Space-charge controlled conduction in low-temperature-grown molecular-beam epitaxial GaAs / P. Kordos ; M. Marso, ; A. Förster ...
JF  - Applied physics letters. 71 (1997), H. 8
Y1  - 1997
SN  - 0003-6951
N1  - ISSN der E-Ausg.: 1077-3118
SP  - 1118
EP  - 1120
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Kordos, P.
A1  - Marso, M.
A1  - Rüders, F.
T1  - 550 GHz bandwidth photodetector on low-temperature grown molecular-beam epitaxial GaAs.  Kordos, P., Förster, A.; Marso, M.; Rüders, F.
JF  - Electronics Letters. 34 (1998), H. 1
Y1  - 1998
SN  - 1350-911X
SP  - 119
EP  - 120
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Kordos, P.
A1  - Ruders, F.
T1  - Properties of LT MBE GaAs for photomixing up to THz frequencies / P. Kordos ; F. Ruders ; M. Marso ; A. Förster
JF  - Proceedings : 8 - 11 December 1996, Australian National University, Canberra, Australia / ed.: C. Jagadish
Y1  - 1997
SN  - 0-7803-3374-8
N1  - Conference on Optoelectronic and Microelectronic Materials and Devices <1996, Canberra> ; IEEE catalog number: 96TH8197
SP  - 71
EP  - ff.
PB  - IEEE Service Center
CY  - Piscataway, NJ
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Lachenmann, S. G.
A1  - Fridrich, I.
A1  - Schäpers, T.
T1  - Supression of the surface-inversion layer of p-type InAs. Lachenmann, S. G.; Fridrich, I.; Förster, A.; Schäpers, Th.
JF  - Journal of Applied Physics. 85 (1999), H. 12
Y1  - 1999
SN  - 1089-7550
SP  - 8242
EP  - 8246
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Lachenmann, S. G.
A1  - Friedrich, I.
T1  - Charge transport in superconductor/semiconductor/normal-conductor step junctions / S. G. Lachenmann ; I. Friedrich ; A. Förster ...
JF  - Physical review / B, Condensed matter and materials physics. 56 (1997), H. 21
Y1  - 1997
SN  - 1095-3795
SP  - 14108
EP  - 14115
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Lachenmann, S. G.
A1  - Friedrich, I.
A1  - Uhlisch, D.
T1  - Superconductor/semiconductor step junctions: the basic element for hybrid three terminal devices. Lachenmann, S. G., Förster, A.; Friedrich, I.; Uhlisch, D.; Schäpers, Th.; Kastalsky, A.; Golubov, A. A.
JF  - Applied Superconductivity. 6 (1999), H. 10-12
Y1  - 1999
SN  - 0964-1807
SP  - 681
EP  - 688
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Lachenmann, S. G.
A1  - Kastalsky, A.
T1  - Novel hybrid Nb/InAs/Nb step junctions / S. G. Lachenmann ; A. Kastalsky ; I. Friedrich ; A. Förster ...
JF  - Czechoslovak journal of physics . 46 (1996), H. S2
Y1  - 1996
SN  - 0011-4626
SP  - 659
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Lachenmann, S. G.
A1  - Kastalsky, A.
T1  - Properties of Nb/InAs/Nb hybrid step junctions / S. G. Lachenmann ; A. Kastalsky ; I. Friedrich ; A. Förster ...
JF  - Journal of low temperature physics. 106 (1997), H. 3-4
Y1  - 1997
SN  - 0022-2291
N1  - ISSN der E-Ausg.: 1573-7357
SP  - 321
EP  - 326
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Lachenmann, S. G.
A1  - Kastalsky, A.
A1  - Uhlisch, D.
T1  - Hybrid superconductor/semiconductor step junction with three terminals. Lachenmann, S. G.; Kastalsky, A.; Förster A.; Uhlisch, D.; Neurohr, K.; Schäpers, Th.
JF  - Journal of Applied Physics. 83 (1998), H. 12
Y1  - 1998
SN  - 1089-7550
SP  - 8077
EP  - 8079
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Lange, J.
A1  - Gerthsen, D.
T1  - The effect of growth temperature on AlAs/GaAs resonant tunnelling diodes
JF  - Journal of Physics D: Applied Physics. 27 (1994), H. 1
Y1  - 1994
SN  - 0022-3727
N1  - ISSN der E-Ausg.: 1361-6463
SP  - 175
EP  - 178
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Lange, J.
A1  - Gerthsen, D.
T1  - Effect of interface roughness and scattering on the performance of AlAs/InGaAs resonant tunneling diodes
JF  - Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures. 11 (1993), H. 4
Y1  - 1993
SN  - 1071-1023
N1  - ISSN der E-Ausg.: 0734-211X
SP  - 1743
EP  - 1747
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Lauter, J.
A1  - Bauser, E.
T1  - Epitaxial gallium arsenide for nuclear radiation detector applications / J. Lauter ; E. Bauser ; A. Förster ...
JF  - Nuclear physics B / Proceedings supplements. 44 (1995), H. 1-3
Y1  - 1995
SN  - 0920-5632
SP  - 381
EP  - 385
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Lauter, J.
A1  - Lüth, H.
T1  - AlGaAs/GaAs avalanche detector array -1 GBit/s X-ray receiver for timing measurements / J. Lauter ; A. Förster ; H. Lüth ...
JF  - 1995 IEEE conference record : October 21 - 28, 1995, San Francisco / Patricia A. Moonier, guest ed. - Vol. 1
Y1  - 1996
SN  - 0-7803-3180-X
N1  - Nuclear Science Symposium <1995, San Francisco, Calif.> ; Medical Imaging Conference <1995, San Francisco, Calif.> ; IEEE catalog number: 95CH35898
SP  - 579
EP  - ff.
PB  - IEEE Service Center
CY  - Piscataway, NJ
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Lauter, J.
A1  - Lüth, H.
T1  - AlGaAs/GaAs avalanche detector array-1 GBit/s X-ray receiver fortiming measurements / J. Lauter ; A. Förster ; H. Lüth ...
JF  - IEEE Transactions on Nuclear Science (T-NS). 43 (1996), H. 3, Part 2
Y1  - 1996
SN  - 0018-9499
SP  - 1446
EP  - 1451
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Lauter, J.
A1  - Protic, D.
A1  - Lüth, H.
T1  - AlGaAs/GaAs SAM-avalanche photodiode : an X-ray detector for low energy photons / J. Lauter ;  D. Protic ; A. Förster ; H. Lüth
JF  - Nuclear instruments and methods in physics research section A: Accelerators, spectrometers, detectors and associated equipment. 356 (1995), H. 2-3
Y1  - 1995
SN  - 0168-9002
SP  - 324
EP  - 329
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Layet, J. M.
A1  - Lüth, H.
T1  - The effect of inhomogeneous dopant profiles on the electron energy loss spectra of Si(100) /
JF  - Applied Physics A: Materials Science & Processing. 47 (1988), H. 1
Y1  - 1988
SN  - 0947-8396
N1  - ISSN der E-Ausg.: 1432-0630
SP  - 95
EP  - 97
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Layet, J. M.
A1  - Lüth, H.
T1  - Evaluation of dopant profiles and diffusion constants by means of electron energy loss spectroscopy
JF  - Applied Surface Science. 41 - 42 (1989)
Y1  - 1989
SN  - 0169-4332
N1  - ISSN der E-Ausg.: 0169-4332
SP  - 306
EP  - 311
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Lentzen, M.
A1  - Gerthsen, D.
T1  - Growth mode and strain relaxation during the initial stage of InxGa1–xAs growth on GaAs(001) / M. Lentzen ; D. Gerthsen ; A. Förster ...
JF  - Applied physics letters. 60 (1992), H. 1
Y1  - 1992
SN  - 0003-6951
N1  - ISSN der E-Ausg.: 1077-3118
SP  - 74
EP  - 76
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Lentzen, M.
A1  - Gerthsen, D.
T1  - Strain relaxation of lattice-mismatched In0.2Ga0.8As/GaAs superlattices on GaAs(001) substrates / M. Lentzen ; D. Gerthsen ; A. Förster ...
JF  - Microscopy of semiconducting materials 1995 : proceedings of the Institute of Physics Conference held at Oxford University, 20 - 23 March 1995 / Ed. by A G Cullis ... - (Conference series / Institute of Physics ; 146)
Y1  - 1995
SN  - 0-7503-0347-6
N1  - MSM <9, 1995, Oxford> ; Institut of Physics <London>
SP  - 357
EP  - ff.
PB  - Institute of Physics
CY  - Bristol [u.a.]
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Lepsa, M. I.
A1  - Freundt, D.
T1  - Hot electron injector Gunn diode for advanced driver assistance systems
JF  - Applied physics A: materials science and processing. 87 (2007), H. 3
Y1  - 2007
SN  - 0947-8396
N1  - ISSN der E-Ausg.: 1432-0630 ; Special issue
SP  - 545
EP  - 558
ER  -