@incollection{SchoeningWagnerPoghossianetal.2018,
  author    = {Sch{\"o}ning, Michael Josef and Wagner, Torsten and Poghossian, Arshak and Miyamoto, K.I. and Werner, C.F. and Krause, S. and Yoshinobu, T.},
  title     = {Light-addressable potentiometric sensors for (bio-)chemical sensing and imaging},
  series = {Encyclopedia of Interfacial Chemistry: Surface Science and Electrochemistry. Vol. 7},
  booktitle = {Encyclopedia of Interfacial Chemistry: Surface Science and Electrochemistry. Vol. 7},
  publisher = {Elsevier},
  address   = {Amsterdam},
  isbn      = {9780128097397},
  pages     = {295 -- 308},
  year      = {2018},
  language  = {en}
}
@article{PoghossianWernerBuniatyanetal.2017,
  author    = {Poghossian, Arshak and Werner, Frederik and Buniatyan, V. V. and Wagner, Torsten and Miamoto, K. and Yoshinobu, T. and Sch{\"o}ning, Michael Josef},
  title     = {Towards addressability of light-addressable potentiometric sensors: Shunting effect of non-illuminated region and cross-talk},
  series = {Sensor and Actuators B: Chemical},
  journal   = {Sensor and Actuators B: Chemical},
  number    = {244},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0925-4005},
  doi       = {10.1016/j.snb.2017.01.047},
  pages     = {1071 -- 1079},
  year      = {2017},
  abstract  = {The LAPS (light-addressable potentiometric sensor) platform is one of the most attractive approaches for chemical and biological sensing with many applications ranging from pH and ion/analyte concentration measurements up to cell metabolism detection and chemical imaging. However, although it is generally accepted that LAPS measurements are spatially resolved, the light-addressability feature of LAPS devices has not been discussed in detail so far. In this work, an extended electrical equivalent-circuit model of the LAPS has been presented, which takes into account possible cross-talk effects due to the capacitive coupling of the non-illuminated region. A shunting effect of the non-illuminated area on the measured photocurrent and addressability of LAPS devices has been studied. It has been shown, that the measured photocurrent will be determined not only by the local interfacial potential in the illuminated region but also by possible interfacial potential changes in the non-illuminated region, yielding cross-talk effects. These findings were supported by the experimental investigations of a penicillin-sensitive multi-spot LAPS and a metal-insulator-semiconductor LAPS as model systems.},
  language  = {en}
}
@inproceedings{NaetherPoghossianPlatenetal.2006,
  author    = {N{\"a}ther, Niko and Poghossian, Arshak and Platen, J. and Yoshinobu, T. and Koudelka-Hep, M. and Sch{\"o}ning, Michael Josef},
  title     = {Multi-parameter sensing of both physical and (bio-)chemical quantities using the same transducer principle},
  series = {Biochemical sensing utilisation of micro- and nanotechnologies : Warsaw, [23rd - 26th] November 2005 / ed. by M. Mascini ...},
  booktitle = {Biochemical sensing utilisation of micro- and nanotechnologies : Warsaw, [23rd - 26th] November 2005 / ed. by M. Mascini ...},
  address   = {Warsaw},
  pages     = {172 -- 181},
  year      = {2006},
  language  = {en}
}
@inproceedings{YoshinobuSchoeningFingeretal.2003,
  author    = {Yoshinobu, T. and Sch{\"o}ning, Michael Josef and Finger, F. and Moritz, W. and Iwasaki, H.},
  title     = {Thin-film a-Si LAPS : Preparation and pH sensitivity},
  series = {Eurosensors XVII : the 17th European Conference on Solid-State Transducers ; University of Minho, Guimar{\~a}es, Portugal, September 21 - 24, 2003},
  booktitle = {Eurosensors XVII : the 17th European Conference on Solid-State Transducers ; University of Minho, Guimar{\~a}es, Portugal, September 21 - 24, 2003},
  pages     = {88 -- 89},
  year      = {2003},
  language  = {en}
}
@inproceedings{ErmelenkoYoshinobuMourzinaetal.2003,
  author    = {Ermelenko, Y. and Yoshinobu, T. and Mourzina, Y. and Sch{\"o}ning, Michael Josef and Vlasov, Y. and Iwasaki, H.},
  title     = {A multisensor based on laser scanned silicon transducer (LSST): development and properties},
  series = {Eurosensors XVII : the 17th European Conference on Solid-State Transducers ; University of Minho, Guimar{\~a}es, Portugal, September 21 - 24, 2003},
  booktitle = {Eurosensors XVII : the 17th European Conference on Solid-State Transducers ; University of Minho, Guimar{\~a}es, Portugal, September 21 - 24, 2003},
  pages     = {72 -- 73},
  year      = {2003},
  language  = {en}
}
@inproceedings{WagnerYoshinobuOttoetal.2006,
  author    = {Wagner, Torsten and Yoshinobu, T. and Otto, R. and Rao, C. and Molina, R. and Sch{\"o}ning, Michael Josef},
  title     = {Licht-adressierbare potentiometrische Sensorsysteme - Konzepte und Anwendungen},
  series = {Sensoren und Mess-Systeme 2006 : Vortr{\"a}ge der 13. ITG/GMA-Fachtagung vom 13. bis 14.3.2006 in Freiburg/Breisgau},
  booktitle = {Sensoren und Mess-Systeme 2006 : Vortr{\"a}ge der 13. ITG/GMA-Fachtagung vom 13. bis 14.3.2006 in Freiburg/Breisgau},
  publisher = {VDE Verl.},
  address   = {Berlin},
  isbn      = {3-8007-2939-3},
  pages     = {165 -- 168},
  year      = {2006},
  language  = {de}
}
@article{MiyamotoSekiWagneretal.2014,
  author    = {Miyamoto, K. and Seki, K. and Wagner, Torsten and Sch{\"o}ning, Michael Josef and Yoshinobu, T.},
  title     = {Enhancement of the spatial resolution of the chemical imaging sensor by a hybrid fiber-optic illumination},
  series = {Procedia Engineering},
  volume    = {87},
  journal   = {Procedia Engineering},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {1877-7058},
  doi       = {10.1016/j.proeng.2014.11.563},
  pages     = {612 -- 615},
  year      = {2014},
  abstract  = {The chemical imaging sensor, which is based on the principle of the light-addressable potentiometric sensor (LAPS), is a powerful tool to visualize the spatial distribution of chemical species on the sensor surface. The spatial resolution of this sensor depends on the diffusion of photocarriers excited by a modulated light. In this study, a novel hybrid fiber-optic illumination was developed to enhance the spatial resolution. It consists of a modulated light probe to generate a photocurrent signal and a ring of constant light, which suppresses the lateral diffusion of minority carriers excited by the modulated light. It is demonstrated that the spatial resolution was improved from 92 μm to 68 μm.},
  language  = {en}
}
@inproceedings{WernerYoshinobuMiyamotoetal.2014,
  author    = {Werner, Frederik and Yoshinobu, T. and Miyamoto, K. and Sch{\"o}ning, Michael Josef and Wagner, Torsten},
  title     = {Semiconductor-based sensors for imaging of chemical processes},
  series = {Sensoren und Messsysteme 2014 ; Beitr{\"a}ge der 17. GMA/ITG-Fachtagung vom 3. bis 4. Juni 2014 in N{\"u}rnberg. (ITG-Fachbericht ; 250)},
  booktitle = {Sensoren und Messsysteme 2014 ; Beitr{\"a}ge der 17. GMA/ITG-Fachtagung vom 3. bis 4. Juni 2014 in N{\"u}rnberg. (ITG-Fachbericht ; 250)},
  publisher = {VDE-Verl.},
  address   = {D{\"u}sseldorf},
  organization    = {VDI/VDE-Gesellschaft Mess- und Automatisierungstechnik},
  isbn      = {978-3-8007-3622-5},
  pages     = {1 -- 5},
  year      = {2014},
  language  = {en}
}
@article{MiyamotoIchimuraWagneretal.2012,
  author    = {Miyamoto, K. and Ichimura, H. and Wagner, Torsten and Yoshinobu, T. and Sch{\"o}ning, Michael Josef},
  title     = {Chemical Imaging of ion Diffusion in a Microfluidic Channel},
  series = {Procedia Engineering},
  journal   = {Procedia Engineering},
  number    = {47},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {1877-7058},
  doi       = {10.1016/j.proeng.2012.09.289},
  pages     = {886 -- 889},
  year      = {2012},
  abstract  = {The chemical imaging sensor is a chemical sensor which is capable of visualizing the spatial distribution of chemical species in sample solution. In this study, a novel measurement system based on the chemical imaging sensor was developed to observe the inside of a Y-shaped microfluidic channel while injecting two sample solutions from two branches. From the collected chemical images, it was clearly observed that the injected solutions formed laminar flows in the microfluidic channel. In addition, ion diffusion across the laminar flows was observed. This label-free method can acquire quantitative data of ion distribution and diffusion in microfluidic devices, which can be used to determine the diffusion coefficients, and therefore, the molecular weights of chemical species in the sample solution.},
  language  = {en}
}
@article{WagnerShigiaharaMiyamotoetal.2012,
  author    = {Wagner, Torsten and Shigiahara, N. and Miyamoto, K. and Suzurikawa, J. and Finger, F. and Sch{\"o}ning, Michael Josef and Yoshinobu, T.},
  title     = {Light-addressable Potentiometric Sensors and Light-addressable Electrodes as a Combined Sensor-and-manipulator Microsystem with High Flexibility},
  series = {Procedia Engineering},
  journal   = {Procedia Engineering},
  number    = {47},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {1877-7058},
  doi       = {10.1016/j.proeng.2012.09.290},
  pages     = {890 -- 893},
  year      = {2012},
  abstract  = {This work describes the novel combination of the light-addressable electrode (LAE) and the light-addressable potentiometric sensor (LAPS) into a microsystem set-up. Both the LAE as well as the LAPS shares the principle of addressing the active spot by means of a light beam. This enables both systems to manipulate resp. to detect an analyte with a high spatial resolution. Hence, combining both principles into a single set-up enables the active stimulation e.g., by means of electrolysis and a simultaneous observation e.g., the response of an entrapped biological cell by detection of extracellular pH changes. The work will describe the principles of both technologies and the necessary steps to integrate them into a single set-up. Furthermore, examples of application and operation of such systems will be presented.},
  language  = {en}
}