TY  - JOUR
A1  - Werner, Frederik
A1  - Wagner, Torsten
A1  - Yoshinobu, Tatsuo
A1  - Keusgen, Michael
A1  - Schöning, Michael Josef
T1  - Frequency behaviour of light-addressable potentiometric sensors
JF  - Physica Status Solidi (A)
N2  - Light-addressable potentiometric sensors (LAPS) are semiconductor-based potentiometric sensors, with the advantage to detect the concentration of a chemical species in a liquid solution above the sensor surface in a spatially resolved manner. The addressing is achieved by a modulated and focused light source illuminating the semiconductor and generating a concentration-depending photocurrent. This work introduces a LAPS set-up that is able to monitor the electrical impedance in addition to the photocurrent. The impedance spectra of a LAPS structure, with and without illumination, as well as the frequency behaviour of the LAPS measurement are investigated. The measurements are supported by electrical equivalent circuits to explain the impedance and the LAPS-frequency behaviour. The work investigates the influence of different parameters on the frequency behaviour of the LAPS. Furthermore, the phase shift of the photocurrent, the influence of the surface potential as well as the changes of the sensor impedance will be discussed.
Y1  - 2013
U6  - https://doi.org/10.1002/pssa.201200929
SN  - 1521-396X ; 0031-8965
VL  - 210
IS  - 5
SP  - 884
EP  - 891
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Grotendorst, Johannes
T1  - On calculating the rate of linear convergence of non-linear transformed sequences
JF  - Proceeding SNC '11 Proceedings of the 2011 International Workshop on Symbolic-Numeric Computation
Y1  - 2011
SN  - 978-1-4503-0515-0
SP  - 24
EP  - 33
PB  - ACM
CY  - New York, NY
ER  - 
TY  - JOUR
A1  - Hillen, Walter
T1  - Properties of hadron final states in e+e− annihilation at 13 GeV and 17 GeV center of mass energies. TASSO Collaboration
JF  - Physics Letters B. 83 (1979), H. 2
Y1  - 1979
SN  - 0370-2693
SP  - 261
EP  - 266
ER  - 
TY  - JOUR
A1  - Hillen, Walter
A1  - Fischer, Felix
T1  - Farbanalyse von gebackenen oder frittierten Nahrungsmitteln und Vorhersage des Acrylamid-Wertes
JF  - 10. Workshop Farbbildverarbeitung : Elektronische Ressource : 7.-8. Oktober 2004, Koblenz = 10th Workshop Color Image Processing / Detlev Droege ... Hrsg.
Y1  - 2004
SN  - 389959245X
N1  - Workshop Farbbildverarbeitung <10, 2004, Koblenz>
SP  - 133
EP  - 148
PB  - Der Andere Verl.
CY  - Tönning [u.a.]
ER  - 
TY  - JOUR
A1  - Kloock, Joachim P.
A1  - Moreno, Lia
A1  - Bratov, A.
A1  - Huachupoma, S.
A1  - Xu, J.
A1  - Wagner, Torsten
A1  - Yoshinobu, T.
A1  - Ermolenko, Y.
A1  - Vlasov, Y. G.
A1  - Schöning, Michael Josef
T1  - PLD-prepared cadmium sensors based on chalcogenide glasses —ISFET, LAPS and &#956;ISE semiconductor structures
JF  - Sensors and Actuators B: Chemical. 118 (2006), H. 1-2
Y1  - 2006
SN  - 0925-4005
N1  - Eurosensors XIX - Eurosensors XIX - The 19th European Conference on Solid-State Transducers
SP  - 149
EP  - 155
ER  - 
TY  - JOUR
A1  - Wagner, Torsten
A1  - Rao, C.
A1  - Kloock, Joachim P.
A1  - Yoshinobu, T.
A1  - Otto, R.
A1  - Keusgen, M.
A1  - Schöning, Michael Josef
T1  - “LAPS Card”—A novel chip card-based light-addressable potentiometric sensor (LAPS)
JF  - Sensors and Actuators B: Chemical. 118 (2006), H. 1-2
Y1  - 2006
SN  - 0925-4005
N1  - Eurosensors XIX - Eurosensors XIX - The 19th European Conference on Solid-State Transducers
SP  - 33
EP  - 40
ER  - 
TY  - JOUR
A1  - Kaminsky, Radoslav
A1  - Kallweit, Stephan
A1  - Weber, Hans-Joachim
A1  - Claessens, Tom
A1  - Jozwik, Krzystof
A1  - Verdonck, Pascal
T1  - Flow visualization through two types of aortic prosthetic heart valves using stereoscopic high-speed particle image velocimetry
JF  - Artificial organs. 31 (2007), H. 12
Y1  - 2007
SN  - 1525-1594
SP  - 869
EP  - 879
ER  - 
TY  - JOUR
A1  - Kaminsky, Radoslav
A1  - Dumont, K.
A1  - Weber, Hans-Joachim
A1  - Schroll, M.
A1  - Verdonck, P.
T1  - PIV validation of blood-heart valve leaflet interaction modelling
JF  - The International journal of artificial organs. 30 (2007), H. 7
Y1  - 2007
SP  - 640
EP  - 648
PB  - -
ER  - 
TY  - JOUR
A1  - Weber, Hans-Joachim
A1  - Mo, Xiumei
A1  - Chen, Zonggang
T1  - Electrospun nanofibers of collagen-chitosan and P(LLA-CL) for tissue engineering / Mo Xiumei, Chen Zonggang, Hans J. Weber
JF  - Frontiers of materials science in China. 1 (2007), H. 1
Y1  - 2007
SN  - 1673-7377
SP  - 20
EP  - 23
PB  - -
ER  - 
TY  - JOUR
A1  - Weber, Hans-Joachim
A1  - Mo, Xiumei
A1  - Ramakrishna, S.
T1  - PCL-PGLA composite tubular scaffold preparation and biocompatibility investigation / X. Mo, H.-J. Weber, S. Ramakrishna
JF  - The International journal of artificial organs. 29 (2006), H. 8
Y1  - 2006
SP  - 790
EP  - 799
PB  - -
ER  -