TY  - JOUR
A1  - Unden, Gottfried
A1  - Becker, S.
A1  - Bongaerts, Johannes
A1  - Holighaus, G.
A1  - Schirawski, Jan
A1  - Six, Simon
T1  - O2-sensing and O2-dependent gene regulation in facultatively anaerobic bacteria
JF  - Archives of microbiology
Y1  - 1995
SN  - 1432-072X (E-Journal); 0003-9276 (Print); 0302-8933 (Print)
VL  - Vol. 164
IS  - Iss. 2
SP  - 81
EP  - 90
ER  - 
TY  - JOUR
A1  - Hoffschmidt, Bernhard
A1  - Becker, Manfred
A1  - Fend, Thomas
T1  - Theoretical and numerical investigation of flow stability in porous materials applied as volumetric solar receivers / M. Becker ; T. Fend ; B. Hoffschmidt ...
JF  - Solar energy. 80 (2006), H. 10
Y1  - 2006
SN  - 0038-092X
N1  - Solar Power and Chemical Energy Systems (SolarPACES’04)
SP  - 1241
EP  - 1248
ER  - 
TY  - JOUR
A1  - Unden, Gottfried
A1  - Becker, S.
A1  - Bongaerts, Johannes
A1  - Schirawski, Jan
A1  - Six, Simon
T1  - Oxygen regulated gene expression in facultatively anaerobic bacteria
JF  - Antonie van Leeuwenhoek
Y1  - 1994
SN  - 0003-6072 (Print) ; 1572-9699 (online)
VL  - Vol. 66
IS  - Iss. 1-3
SP  - 3
EP  - 22
ER  - 
TY  - JOUR
A1  - Abouzar, Maryam H.
A1  - Poghossian, Arshak
A1  - Siqueira, José R. Jr.
A1  - Oliveira, Osvaldo N. Jr.
A1  - Moritz, Werner
A1  - Schöning, Michael Josef
T1  - Capacitive electrolyte-insulator-semiconductor structures functionalised with a polyelectrolyte/enzyme multilayer: New strategy for enhanced field-effect biosensing
JF  - Physica Status Solidi (A)
N2  - A novel strategy for enhanced field-effect biosensing using capacitive electrolyte–insulator–semiconductor (EIS) structures functionalised with pH-responsive weak polyelectrolyte/enzyme or dendrimer/enzyme multilayers is presented. The feasibility of the proposed approach is exemplarily demonstrated by realising a penicillin biosensor based on a capacitive p-Si–SiO2 EIS structure functionalised with a poly(allylamine hydrochloride) (PAH)/penicillinase and a poly(amidoamine) dendrimer/penicillinase multilayer. The developed sensors response to changes in both the local pH value near the gate surface and the charge of macromolecules induced via enzymatic reaction, resulting in a higher sensitivity. For comparison, an EIS penicillin biosensor with adsorptively immobilised penicillinase has been also studied. The highest penicillin sensitivity of 100 mV/dec has been observed for the EIS sensor functionalised with the PAH/penicillinase multilayer. The lower and upper detection limit was around 20 µM and 10 mM, respectively. In addition, an incorporation of enzymes in a multilayer prepared by layer-by-layer technique provides a larger amount of immobilised enzymes per sensor area, reduces enzyme leaching effects and thus, enhances the biosensor lifetime (the loss of penicillin sensitivity after 2 months was 10–12%).
Y1  - 2010
U6  - https://doi.org/10.1002/pssa.200983317
SN  - 1862-6300
N1  - Special Issue: Engineering of Functional Interfaces EnFI 2009
VL  - 207
IS  - 4
SP  - 884
EP  - 890
PB  - Wiley-VCH
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Schöning, Michael Josef
A1  - Tsarouchas, D.
A1  - Beckers, Leah
A1  - Schubert, J.
A1  - Zander, W.
A1  - Kordoš, P.
A1  - Lüth, Hans
T1  - A highly long-term stable silicon-based pH sensor using pulsed laser deposition technique
JF  - Sensors and Actuators B. 35 (1996), H. 1-3
Y1  - 1996
SN  - 0925-4005
SP  - 228
EP  - 233
ER  - 
TY  - JOUR
A1  - Schmitz, Günter
A1  - Roetert, J.
A1  - Pischinger, Martin
T1  - A Fast Intelligent VMEbus System for Combustion Analysis in Engines
JF  - 19th [nineteenth] International Symposium on Automotive Technology & [and] Automation : with particular reference to cell control and quality management systems for the manufacturing industries; Monte Carlo, 24. - 28. October 1988.
Y1  - 1988
SN  - 0947719229
SP  - 381
EP  - 391
PB  - Automotive Automation Ltd
CY  - Croydon
ER  - 
TY  - JOUR
A1  - Poghossian, Arshak
A1  - Jablonski, Melanie
A1  - Koch, Claudia
A1  - Bronder, Thomas
A1  - Rolka, David
A1  - Wege, Christina
A1  - Schöning, Michael Josef
T1  - Field-effect biosensor using virus particles as scaffolds for enzyme immobilization
JF  - Biosensors and Bioelectronics
N2  - A field-effect biosensor employing tobacco mosaic virus (TMV) particles as scaffolds for enzyme immobilization is presented. Nanotubular TMV scaffolds allow a dense immobilization of precisely positioned enzymes with retained activity. To demonstrate feasibility of this new strategy, a penicillin sensor has been developed by coupling a penicillinase with virus particles as a model system. The developed field-effect penicillin biosensor consists of an Al-p-Si-SiO₂-Ta₂O₅-TMV structure and has been electrochemically characterized in buffer solutions containing different concentrations of penicillin G. In addition, the morphology of the biosensor surface with virus particles was characterized by scanning electron microscopy and atomic force microscopy methods. The sensors possessed a high penicillin sensitivity of ~ 92 mV/dec in a nearly-linear range from 0.1 mM to 10 mM, and a low detection limit of about 50 µM. The long-term stability of the penicillin biosensor was periodically tested over a time period of about one year without any significant loss of sensitivity. The biosensor has also been successfully applied for penicillin detection in bovine milk samples.
Y1  - 2018
U6  - https://doi.org/10.1016/j.bios.2018.03.036
SN  - 0956-5663
VL  - 110
SP  - 168
EP  - 174
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Schöning, Michael Josef
A1  - Kirchner, Patrick
A1  - Ng, Yue Ann
A1  - Spelthahn, Heiko
A1  - Schneider, Andreas
A1  - Henkel, Hartmut
A1  - Friedrich, Peter
A1  - Kolstad, Jens
A1  - Berger, Jörg
A1  - Keusgen, Michael
T1  - Gas sensor investigation based on a catalytically activated thin-film thermopile for H2O2 detection
JF  - Physica Status Solidi (A)
N2  - In aseptic filling systems, hydrogen peroxide vapour is commonly used for the reduction of microbial contaminations in carton packages. In this process, the germicidal efficiency of the vapour depends especially on the H₂O₂ concentration. To monitor the H₂O₂ concentration, a calorimetric H₂O₂ gas sensor based on a catalytically activated thin-film thermopile is investigated. Two different sensor layouts, namely a circular and a linear form, as well as two various material pairs such as tungsten/nickel and gold/nickel, have been examined for the realization of a thin-film thermopile. Additionally, manganese oxide and palladium particles have been compared as responsive catalysts towards H₂O₂. The thin-film sensors have been investigated at various H₂O₂ concentrations, gas temperatures and flow rates.
Y1  - 2010
U6  - https://doi.org/10.1002/pssa.200983309
SN  - 1862-6300
N1  - Special Issue: Engineering of Functional Interfaces EnFI 2009
VL  - 207
IS  - 4
SP  - 787
EP  - 792
PB  - Wiley-VCH
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Huck, Christina
A1  - Poghossian, Arshak
A1  - Bäcker, Matthias
A1  - Chaudhuri, S.
A1  - Zander, W.
A1  - Schubert, J.
A1  - Begoyan, Vardges K.
A1  - Buniatyan, V. V.
A1  - Wagner, P.
A1  - Schöning, Michael Josef
T1  - Capacitively coupled electrolyte-conductivity sensor based on high-k material of barium strontium titanate
JF  - Sensors and actuators. B: Chemical
Y1  - 2014
U6  - https://doi.org/10.1016/j.snb.2014.02.103
SN  - 1873-3077 (E-Journal); 0925-4005 (Print)
IS  - 198
SP  - 102
EP  - 109
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Grundmann, Jan Thimo
A1  - Dachwald, Bernd
A1  - Grimm, Christian D.
A1  - Kahle, Ralph
A1  - Koch, Aaron Dexter
A1  - Krause, Christian
A1  - Lange, Caroline
A1  - Quantius, Dominik
A1  - Ulamec, Stephan
T1  - Spacecraft for Hypervelocity Impact Research – An Overview of Capabilities, Constraints and the Challenges of Getting There
JF  - Procedia Engineering
Y1  - 2015
U6  - https://doi.org/10.1016/j.proeng.2015.04.021
SN  - 1877-7058
N1  - Proceedings of the 2015 Hypervelocity Impact Symposium (HVIS 2015)
VL  - Vol. 103
SP  - 151
EP  - 158
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Buniatyan, Vahe V.
A1  - Abouzar, Maryam H.
A1  - Martirosyan, Norayr W.
A1  - Schubert, Jürgen
A1  - Gevorgian, Spartak
A1  - Schöning, Michael Josef
A1  - Poghossian, Arshak
T1  - pH-sensitive properties of barium strontium titanate (BST) thin films prepared by pulsed laser deposition technique
JF  - Physica Status Solidi (A)
N2  - pH-sensitive properties of barium strontium titanate (BST) high-k thin films as alternative gate material for field-effect capacitive (bio-)chemical sensors based on an electrolyte-insulator-semiconductor system have been investigated. The BST films of different compositions (Ba0.31Sr0.69TiO3, Ba0.25Sr0.75TiO3 and Mg-doped Ba0.8Sr0.2Mg0.1Ti0.9O3) were deposited by pulsed laser deposition technique from targets fabricated by self-propagating high-temperature synthesis. The realised sensors have been electrochemically characterised by means of impedance-spectroscopy, capacitance–voltage and constant-capacitance method. The sensors possess a Nernstian-like pH sensitivity in the concentration range between pH 3 and 11 with a response time of 5–10 s. An equivalent circuit model for the BST-based capacitive field-effect sensor is discussed.
Y1  - 2010
U6  - https://doi.org/10.1002/pssa.200983310
SN  - 1862-6300
N1  - Special Issue: Engineering of Functional Interfaces EnFI 2009
VL  - 207
IS  - 4
SP  - 824
EP  - 830
PB  - Wiley-VCH
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Turek, Monik
A1  - Heiden, Wolfgang
A1  - Guo, Sharon
A1  - Riesen, Alfred
A1  - Schubert, Jürgen
A1  - Zander, Willi
A1  - Krüger, Peter
A1  - Keusgen, Michael
A1  - Schöning, Michael Josef
T1  - Simultaneous detection of cyanide and heavy metals for environmental analysis by means of µISEs
JF  - Physica Status Solidi (A)
N2  - In environmental analysis, cyanide and heavy metals play an important role, because these substances are highly toxic for biological systems. They can lead to chronic and acute diseases. Due to the chemical properties of cyanide it is frequently used for industrial processes such as extraction of silver and gold. Heavy metals can be found as trace elements in nature and are often applied in industries e.g., galvanization processes. Up to now, cyanide and heavy metals can be detected by several sensors separately and their detection is often limited to laboratory investigations. In this publication, with regard to an in situ analysis, a new miniaturized silicon-based sensor system for the simultaneous detection of cyanide and heavy metals in aqueous solutions is presented that is based on chalcogenide glass-based micro ion-selective electrodes (µISEs). The µISEs are incorporated into a specially designed measuring system for the simultaneous detection of heavy metals and cyanide in solutions and validated by simultaneous measurements of Cu2+- and CN−-ions, Cd2+- and CN−- ions and Pb2+- and CN−-ions. The particular sensor system has shown good sensor properties in the µ-molar ion-concentration range. For simultaneous measurements in complex heavy metal and cyanide solutions an intelligent software using fuzzy logic is discussed.
Y1  - 2010
U6  - https://doi.org/10.1002/pssa.200983303
SN  - 1862-6300
N1  - Special Issue: Engineering of Functional Interfaces EnFI 2009
VL  - 207
IS  - 4
SP  - 817
EP  - 823
PB  - Wiley-VCH
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Jansen, S. V.
A1  - Behbahani, Mehdi
A1  - Laumen, M.
A1  - Kaufmann, T.
A1  - Hormes, M.
A1  - Behr, Marek
A1  - Schmitz-Rode, T.
A1  - Steinseifer, U.
T1  - Investigation of Steady Flow Through a Realistic Model of the Thoracic Human Aorta Using 3D Stereo PIV and CFD-Simulation
JF  - ASAIO Journal
Y1  - 2010
U6  - https://doi.org/10.1097/01.mat.0000369377.65122.a3
N1  - American Society of Artificial Organs (ASAIO), Baltimore, USA, May 27-29, 2010
VL  - 56
IS  - 2
SP  - 98
PB  - Lippincott Williams & Wilkins
CY  - Philadelphia
ER  - 
TY  - JOUR
A1  - Behbahani, Mehdi
A1  - Probst, M.
A1  - Mai, A.
A1  - Tran, L.
A1  - Vonderstein, K.
A1  - Keschenau, P.
A1  - Linde, T.
A1  - Steinseifer, U.
A1  - Behr, Marek
A1  - Mottaghy, K.
T1  - The influence of high shear on thrombosis and hemolysis in artificial organs
JF  - The International Journal of Artificial Organs
Y1  - 2010
SN  - 0391-3988
VL  - 33
IS  - 7
SP  - 426
EP  - 426
PB  - Sage
CY  - Thousand Oaks
ER  - 
TY  - JOUR
A1  - Schöning, Michael Josef
A1  - Beckers, Leah
A1  - Schaub, A.
A1  - Zander, W.
A1  - Schubert, J.
A1  - Mesters, S.
A1  - Kordos, P.
A1  - Lüth, H.
T1  - A novel silicon-based pH sensor prepared by pulsed laser deposition technique
JF  - Proceedings of Eurosensors X, the 10th European Conference on Solid-State Transducers, September 8-11, 1996, Leuven, Belgium / [KU Leuven]. Puers, Robert.  Vol. 3.
Y1  - 1996
SN  - 90-803282-1-9
N1  - Eurosensors ; (10, 1996, Louvain) Eurosensors, the European Conference on Solid-State Transducers ; (10 : ; 1996.09.08-11 : ; Leuven)
SP  - 781
EP  - 784
PB  - Catholic University Leuven
CY  - Heverlee, Belgium
ER  - 
TY  - JOUR
A1  - Siqueira, José R. Jr.
A1  - Bäcker, Matthias
A1  - Poghossian, Arshak
A1  - Zucolotto, Valtencir
A1  - Oliveira, Osvaldo N. Jr.
A1  - Schöning, Michael Josef
T1  - Associating biosensing properties with the morphological structure of multilayers containing carbon nanotubes on field-effect devices
JF  - Physica Status Solidi (A)
N2  - The control of molecular architecture provided by the layer-by-layer (LbL) technique has led to enhanced biosensors, in which advantageous features of distinct materials can be combined. Full optimization of biosensing performance, however, is only reached if the film morphology is suitable for the principle of detection of a specific biosensor. In this paper, we report a detailed morphology analysis of LbL films made with alternating layers of single-walled carbon nanotubes (SWNTs) and polyamidoamine (PAMAM) dendrimers, which were then covered with a layer of penicillinase (PEN). An optimized performance to detect penicillin G was obtained with 6-bilayer SWNT/PAMAM LbL films deposited on p-Si-SiO2-Ta2O5 chips, used in biosensors based on a capacitive electrolyte-insulator-semiconductor (EIS) and a light-addressable potentiometric sensor (LAPS) structure, respectively. Field-emission scanning electron microscopy (FESEM) and atomic force microscopy (AFM) images indicated that the LbL films were porous, with a large surface area due to interconnection of SWNT into PAMAM layers. This morphology was instrumental for the adsorption of a larger quantity of PEN, with the resulting LbL film being highly stable. The experiments to detect penicillin were performed with constant-capacitance (ConCap) and constant-current (CC) measurements for EIS and LAPS sensors, respectively, which revealed an enhanced detection signal and sensitivity of ca. 100 mV/decade for the field-effect sensors modified with the PAMAM/SWNT LbL film. It is concluded that controlling film morphology is essential for an enhanced performance of biosensors, not only in terms of sensitivity but also stability and response time.
Y1  - 2010
U6  - https://doi.org/10.1002/pssa.200983301
SN  - 1862-6300
N1  - Special Issue: Engineering of Functional Interfaces EnFI 2009
VL  - 207
IS  - 4
SP  - 781
EP  - 786
PB  - Wiley-VCH
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Huck, Christina
A1  - Poghossian, Arshak
A1  - Bäcker, Matthias
A1  - Reisert, Steffen
A1  - Schubert, J.
A1  - Zander, W.
A1  - Begoyan, Vardges K.
A1  - Buniatyan, V. V.
A1  - Schöning, Michael Josef
T1  - Chemical sensors based on a high-k perovskite oxide of barium strontium titanate
JF  - Procedia Engineering
N2  - High-k perovskite oxide of barium strontium titanate (BST) represents a very attractive multi-functional transducer material for the development of (bio-)chemical sensors for liquids. In this work, BST films have been applied as a sensitive transducer material for a label-free detection of adsorbed charged macromolecules (positively charged polyelectrolytes) and concentration of hydrogen peroxide vapor as well as protection insulator layer for a contactless electrolyte-conductivity sensor. The experimental results of characterization of individual sensors are presented. Special emphasis is devoted towards the development of a capacitively-coupled contactless electrolyte-conductivity sensor.
KW  - barium strontium titanate
KW  - high-k material
KW  - contactless conductivity sensor
KW  - multi-functional material
KW  - hydrogen peroxide
Y1  - 2014
U6  - https://doi.org/10.1016/j.proeng.2014.11.258
SN  - 1877-7058
N1  - EUROSENSORS 2014 ; European Conference on Solid-State Transducers <28, 2014>
VL  - 87
SP  - 28
EP  - 31
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Behbahani, Mehdi
A1  - Tran, L.
A1  - Waluga, C.
A1  - Behr, Marek
A1  - Oedekoven, B.
A1  - Mottaghy, K.
T1  - Model-based Numerical Analysis of Platelet Adhesion, Thrombus Growth and Aggregation for Assist Devices
JF  - The International Journal of Artificial Organs. 32 (2009), H. 7
Y1  - 2009
SN  - 0391-3988
N1  - Abstracts - Oral Presentations: XXXVI Annual ESAO Congress, 2-5 September 2009, Compiègne - France; European Society of Artificial Organs (ESAO), Compiegne, France, September 2-5, 2009
SP  - 398
EP  - 398
ER  - 
TY  - JOUR
A1  - Schöning, Michael Josef
A1  - Schaub, A.
A1  - Zundel, A.
A1  - Beckers, Leah
A1  - Schubert, J.
A1  - Zander, W.
A1  - Kordos, P.
A1  - Lüth, H.
T1  - Pulsed laser deposition as a novel thin film preparation method for silicon-based field effect sensors
JF  - Proceedings of the 25th European Solid State Device Research Conference : the Netherlands Congress Centre, The Hague, the Netherlands, 25th - 27th September 1995 / ESSDERC '95. Ed. by H. C. de Graaff
Y1  - 1995
SN  - 2-86332-182-X
N1  - ESSDERC ; (25, 1995, 's-Gravenhage) ; European Solid State Device Research Conference (ESSDERC) ; (25 : ; 1995.09.25-27 : ; Den Haag)
SP  - 601
EP  - 604
PB  - Ed. Frontières
CY  - Gif-sur-Yvette
ER  - 
TY  - JOUR
A1  - Behbahani, Mehdi
A1  - Behr, Marek
A1  - Arora, D.
A1  - Coronado, O.
A1  - Pasquali, M.
T1  - CFD Analysis of MicroMed Debakey Pump and Hemolysis Prediction / Behbahani, M. ; Behr, M. ; Arora, D. ; Coronado, O. ; Pasquali, M.
JF  - Artificial Organs. 30 (2006), H. 11
Y1  - 2006
SN  - 1525-1594
N1  - Abstracts 14th Congress of the International Society for Rotary Blood Pumps, Leuven, Belgium, August 31–September 2, 2006 ; S7-4
SP  - A45
EP  - A46
ER  -