TY - JOUR A1 - Maezawa, Koichi A1 - Förster, Arnold T1 - Quantum transport devices based on resonant tunneling JF - Nanoelectronics and information technology : advanced electronic materials and novel devices / Rainer Waser (ed.). Y1 - 2003 SN - 3-527-40363-9 SP - 407 EP - 424 PB - Wiley-VCH CY - Weinheim ER - TY - JOUR A1 - Mikulics, M. A1 - Camara, I. A1 - Hardt, A. van der A1 - Fox, A. A1 - Förster, Arnold A1 - Gusten, R. A1 - Lüth, H. A1 - Kordos, P. T1 - Generation of THz radiation by photomixing in low-temperature-grown MBE GaAs JF - Fifth International Conference on Advanced Semiconductor Devices and Microsystems : conference proceedings ; Smolenice Castle, Slovakia, October 17 - 21, 2004 / [organizers: Institute of Electrical Engineering, Slovak Academy of Sciences, Bratislava and Microelectronics Department, Faculty of Electrical Engineering and Information Technology, Slovak University of Technology, Bratislava]. Ed. by J. Osvald Y1 - 2004 SN - 0-7803-8335-7 N1 - International Conference on Advanced Semiconductor Devices and Microsystems <5, 2004, Smolenice> ; ASDAM <5, 2004, Smolenice> ; IEEE catalog numer: 04EX867 SP - 231 EP - 234 PB - IEEE Operations Center CY - Piscataway, NJ ER - TY - JOUR A1 - Zatko, B. A1 - Dubecký, F. A1 - Bohacek, P. A1 - Gombia, E. A1 - Frigeri, P. A1 - Mosca, R. A1 - Franchi, S. A1 - Huarn, J. A1 - Nescas, V. A1 - Sekacova, M. A1 - Förster, Arnold A1 - Kordos, P. T1 - On the spectrometric performance limit of radiation detectors based on semi-insulating GaAs JF - Nuclear instruments and methods in physics research, Section A. 531 (2004), H. 1-2 Y1 - 2004 SN - 0168-9002 SP - 111 EP - 120 ER - TY - JOUR A1 - Srnanek, R. A1 - Geurts, J. A1 - Lentze, M. A1 - Irmer, G. A1 - Donoval, D. A1 - Brdecka, P. A1 - Kordos, P. A1 - Förster, Arnold A1 - Sciana, B. A1 - Radziewicz, D. A1 - Tlaczala, M. T1 - Study of d-doped GaAs layers by micro-Raman spectroscopy on bevelled samples JF - Applied surface science . 230 (2004), H. 1 -4 Y1 - 2004 SN - 0169-4332 N1 - ISSN der E-Ausg.: 0169-4332 SP - 379 EP - 385 ER - TY - JOUR A1 - Mikulics, M. A1 - Adam, R. A1 - Kordos, P. A1 - Förster, Arnold A1 - Lüth, H. A1 - Wu, S. A1 - Zheng, X. A1 - Sobolewski, R. T1 - Ultrafast low-temperature-grown epitaxial GaAs photodetectors transferred on flexible plastic substrates JF - IEEE photonics technology letters : IEEE PTL. 17 (2005), H. 8 Y1 - 2005 SN - 1041-1135 SP - 1725 EP - 1727 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 - TY - JOUR A1 - Wagner, Torsten A1 - Molina, R. A1 - Biselli, Manfred A1 - Canzoneri, Michele A1 - Schnitzler, Thomas A1 - Yoshinobu, Tatsuo A1 - Schöning, Michael Josef T1 - A light-addressable potentiometric sensor system for fast, simultaneous and spatial detection of the metabolic activity of biological cells JF - Transducers '07 Eurosensors XXI : digest of technical papers ; the14th International Conference on Solid-State Sensors, Actuators and Microsystems, June 10-14, 2007, Lyon, France / Gilles Delapierre (Ed.) Y1 - 2007 SN - 1-4244-0841-5 N1 - Eurosensors 21, 2007, Lyon ; International Conference on Solid-State Sensors, Actuators and Microsystems 14, 2007, Lyon SP - 1107 EP - 1110 PB - IEEE CY - Piscataway ER - TY - JOUR A1 - Schöning, Michael Josef A1 - Kloock, Joachim P. T1 - About 20 years of silicon-based thin-film sensors with chalcogenide glass materials for heavy metal analysis: Technological aspects of fabrication and miniaturization JF - Electroanalysis. 19 (2007), H. 19-20 Y1 - 2007 SN - 1040-0397 SP - 2029 EP - 2038 ER - TY - JOUR A1 - Wagner, Torsten A1 - Schöning, Michael Josef T1 - Light-addressable potentiometric sensors (LAPS): recent trends and applications JF - Electrochemical sensor analysis / edited by S. Alegret ... Y1 - 2007 SN - 978-0-444-53053-0 N1 - Wilson & Wilson's comprehensive analytical chemistry ; 49 SP - 87 EP - 128 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Wagner, Torsten A1 - Kloock, Joachim P. A1 - Schöning, Michael Josef T1 - Determination of cadmium concentration and pH value in aqueous solutions by means of a handheld light-addressable potentiometric sensor (LAPS) device JF - Electrochemical sensor analysis / edited by S. Alegret ... Y1 - 2007 SN - 978-0-444-53133-9 N1 - Wilson & Wilson's comprehensive analytical chemistry ; 49 SP - e35 EP - e44 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Wagner, Torsten A1 - Werner, Frederik A1 - Miyamoto, Ko-Ichiro A1 - Schöning, Michael Josef A1 - Yoshinobu, Tatsuo T1 - Development and characterisation of a compact light-addressable potentiometric sensor (LAPS) based on the digital light processing (DLP) technology for flexible chemical imaging JF - Sensors and Actuators B: Chemical N2 - Chemical imaging systems allow the visualisation of the distribution of chemical species on the sensor surface. This work represents a new flexible approach to read out light-addressable potentiometric sensors (LAPS) with the help of a digital light processing (DLP) set-up. The DLP, known well for video projectors, consists of a mirror-array MEMS device, which allows fast and flexible generation of light patterns. With the help of these light patterns, the sensor surface of the LAPS device can be addressed. The DLP approach has several advantages compared to conventional LAPS set-ups, e.g., the spot size and the shape of the light pointer can be changed easily and no mechanical movement is necessary, which reduces the size of the set-up and increases the stability and speed of the measurement. In addition, the modulation frequency and intensity of the light beam are important parameters of the LAPS set-up. Within this work, the authors will discuss two different ways of light modulation by the DLP set-up, investigate the influence of different modulation frequencies and different light intensities as well as demonstrate the scanning capabilities of the new set-up by pH mapping on the sensor surface. Y1 - 2012 U6 - https://doi.org/10.1016/j.snb.2010.12.003 SN - 0925-4005 N1 - Part of special issue "Eurosensors XXIV, 2010" VL - 170 SP - 34 EP - 39 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Werner, Frederik A1 - Schusser, Sebastian A1 - Spalthahn, Heiko A1 - Wagner, Torsten A1 - Yoshinobu, Tatsuo A1 - Schöning, Michael Josef T1 - Field-programmable gate array based controller for multi spot light-addressable potentiometric sensors with integrated signal correction mode JF - Electrochimica Acta N2 - A light-addressable potentiometric sensor (LAPS) can measure the concentration of one or several analytes at the sensor surface simultaneously in a spatially resolved manner. A modulated light pointer stimulates the semiconductor structure at the area of interest and a responding photocurrent can be read out. By simultaneous stimulation of several areas with light pointers of different modulation frequencies, the read out can be performed at the same time. With the new proposed controller electronic based on a field-programmable gate array (FPGA), it is possible to control the modulation frequencies, phase shifts, and light brightness of multiple light pointers independently and simultaneously. Thus, it is possible to investigate the frequency response of the sensor, and to examine the analyte concentration by the determination of the surface potential with the help of current/voltage curves and phase/voltage curves. Additionally, the ability to individually change the light intensities of each light pointer is used to perform signal correction. Y1 - 2011 U6 - https://doi.org/10.1016/j.electacta.2011.03.012 SN - 0013-4686 VL - 56 IS - 26 SP - 9656 EP - 9660 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Paczkowski, Sebastian A1 - Weißbecker, Bernhard A1 - Schöning, Michael Josef A1 - Schütz, Stefan T1 - Biosensors on the Basis of Insect Olfaction JF - Insect biotechnology / Andreas Vilcinskas, ed. Y1 - 2011 SN - 978-90-481-9640-1 N1 - Biologically-inspired system ; 2 SP - 225 EP - 240 PB - Springer CY - Dordrecht [u.a.] ER - TY - JOUR A1 - Bohrn, Ulrich A1 - Stütz, Evamaria A1 - Fleischer, Maximilian A1 - Schöning, Michael Josef A1 - Wagner, Patrick T1 - Eukaryotic cell lines as a sensitive layer for direct monitoring of carbon monoxide JF - Physica status solidi (a) : applications and material science. 208 (2011), H. 6 Y1 - 2011 SN - 1862-6319 SP - 1345 EP - 1350 PB - Wiley CY - Weinheim ER - TY - JOUR A1 - Werner, Frederik A1 - Krumbe, Christoph A1 - Schumacher, Katharina A1 - Groebel, Simone A1 - Spelthahn, Heiko A1 - Stellberg, Michael A1 - Wagner, Torsten A1 - Yoshinobu, Tatsuo A1 - Selmer, Thorsten A1 - Keusgen, Michael A1 - Baumann, Marcus A1 - Schöning, Michael Josef T1 - Determination of the extracellular acidification of Escherichia coli by a light-addressable potentiometric sensor JF - Physica status solidi (a) : applications and material science. 208 (2011), H. 6 Y1 - 2011 SN - 1862-6319 SP - 1340 EP - 1344 PB - Wiley CY - Weinheim ER - TY - JOUR A1 - Kirchner, Patrick A1 - Oberländer, Jan A1 - Friedrich, Peter A1 - Berger, Jörg A1 - Suso, Henri-Pierre A1 - Kupyna, Andriy A1 - Keusgen, Michael A1 - Schöning, Michael Josef T1 - Optimisation and fabrication of a calorimetric gas sensor built up on a polyimide substrate for H2O2 monitoring JF - Physica status solidi (a) : applications and material science. 208 (2011), H. 6 Y1 - 2011 SN - 1862-6319 SP - 1235 EP - 1240 PB - Wiley CY - Weinheim ER - TY - JOUR A1 - Reisert, Steffen A1 - Geissler, Hanno A1 - Flörke, Rudolf A1 - Näther, Niko A1 - Wagner, Patrick A1 - Schöning, Michael Josef T1 - Towards a multi-sensor system for the evaluation of aseptic processes employing hydrogen peroxide vapour (H2O2) JF - Physica status solidi (a) : applications and material science. 208 (2011), H. 6 Y1 - 2011 SN - 1862-6319 SP - 1351 EP - 1356 PB - Wiley CY - Weinheim ER - TY - JOUR A1 - Wagner, Torsten A1 - Miyamoto, Ko-ichiro A1 - Shigihara, Noriko A1 - Schöning, Michael Josef A1 - Yoshinobu, Tatsuo T1 - Microfluidic systems with free definable sensor spots by an integrated light-addressable potentiometric sensor JF - Procedia Engineering. 25 (2011) Y1 - 2011 SN - 1877-7058 N1 - EurosensorsXXV ; Proc. Eurosensors XXV, September 4-7, 2011, Athens, Greece SP - 791 EP - 794 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Werner, Frederik A1 - Wagner, Torsten A1 - Miyamoto, Ko-ichiro A1 - Yoshinobu, Tatsuo A1 - Schöning, Michael Josef T1 - High speed and high resolution chemical imaging based on a new type of OLED-LAPS set-up JF - Procedia Engineering. 25 (2011) Y1 - 2011 SN - 1877-7058 N1 - EurosensorsXXV ; Proc. Eurosensors XXV, September 4-7, 2011, Athens, Greece SP - 346 EP - 349 PB - Elsevier CY - Amsterdam ER - TY - JOUR A1 - Miyamoto, Ko-ichiro A1 - Kaneko, Kazumi A1 - Matsuo, Akira A1 - Wagner, Torsten A1 - Kanoh, Shiníchiro A1 - Schöning, Michael Josef A1 - Yoshinobu, Tatsuo T1 - Miniaturized chemical imaging sensor system using an OLED display panel JF - Sensors and Actuators B: Chemical N2 - The chemical imaging sensor is a semiconductor-based chemical sensor that can visualize the two-dimensional distribution of specific ions or molecules in the solution. In this study, we developed a miniaturized chemical imaging sensor system with an OLED display panel as a light source that scans the sensor plate. In the proposed configuration, the display panel is placed directly below the sensor plate and illuminates the back surface. The measured area defined by illumination can be arbitrarily customized to fit the size and the shape of the sample to be measured. The waveform of the generated photocurrent, the current–voltage characteristics and the pH sensitivity were investigated and pH imaging with this miniaturized system was demonstrated. KW - LAPS KW - Light-addressable potentiometric sensor KW - Chemical imaging sensor KW - Organic light-emitting diode display Y1 - 2012 U6 - https://doi.org/10.1016/j.snb.2011.02.029 SN - 0925-4005 N1 - Part of special issue "Eurosensors XXIV, 2010" VL - 170 SP - 82 EP - 87 PB - Elsevier CY - Amsterdam ER -