@article{WagnerSchoeningOttoetal.2004,
  author    = {Wagner, Torsten and Sch{\"o}ning, Michael Josef and Otto, R. and Yoshinobu, T.},
  title     = {A handheld 16 channel pen-type LAPS as a platform for (bio-)electrochemical sensing},
  series = {Biomedizinische Technik. 49 (2004), H. 2},
  journal   = {Biomedizinische Technik. 49 (2004), H. 2},
  isbn      = {0932-4666},
  pages     = {996 -- 997},
  year      = {2004},
  language  = {en}
}
@article{SchoeningWagnerWangetal.2005,
  author    = {Sch{\"o}ning, Michael Josef and Wagner, Torsten and Wang, C. and Otto, R. and Yoshinobu, T.},
  title     = {Development of a handheld 16 channel pen-type LAPS for electrochemical sensing},
  series = {Sensors and Actuators B. 108 (2005)},
  journal   = {Sensors and Actuators B. 108 (2005)},
  isbn      = {0925-4005},
  pages     = {808 -- 814},
  year      = {2005},
  language  = {en}
}
@article{WagnerYoshinobuRaoetal.2005,
  author    = {Wagner, Torsten and Yoshinobu, T. and Rao, C. and Otto, R. and Sch{\"o}ning, Michael Josef},
  title     = {„All-in-one" solid-state device based on a lightaddressable potentiometric sensor platform},
  series = {Transducers '05 : the 13th International Conference on Solid-State Sensors, Actuators and Microsystems ; Seoul, Korea, [June 5 - 9, 2005] ; digest of technical papers / sponsored by Korean Sensors Society. Technical co-sponsors: IEEE Electron Devices Society},
  journal   = {Transducers '05 : the 13th International Conference on Solid-State Sensors, Actuators and Microsystems ; Seoul, Korea, [June 5 - 9, 2005] ; digest of technical papers / sponsored by Korean Sensors Society. Technical co-sponsors: IEEE Electron Devices Society},
  publisher = {IEEE Operations Center},
  address   = {Piscataway, NJ},
  isbn      = {0-7803-83995-6},
  pages     = {1872 -- 1875},
  year      = {2005},
  language  = {en}
}
@article{SchoeningWagnerWangetal.2004,
  author    = {Sch{\"o}ning, Michael Josef and Wagner, Torsten and Wang, C. and Otto, R. and Yoshinobu, T.},
  title     = {Development of a handheld 16 channel pen-type LAPS for electrochemical sensing},
  series = {Technical digest of the 10th International Meeting on Chemical Sensors, July 11 - 14, 2004, Tsukuba, Japan / Japan Association of Chemical Sensors},
  journal   = {Technical digest of the 10th International Meeting on Chemical Sensors, July 11 - 14, 2004, Tsukuba, Japan / Japan Association of Chemical Sensors},
  publisher = {Japan Association of Chemical Sensors},
  address   = {Fukuoka},
  pages     = {136 -- 137},
  year      = {2004},
  language  = {en}
}
@article{YoshinobuIwasakiUietal.2005,
  author    = {Yoshinobu, T. and Iwasaki, H. and Ui, Y. and Furuichi, K. and Ermelenko, Y. and Mourzina, Y. and Wagner, Torsten and N{\"a}ther, Niko and Sch{\"o}ning, Michael Josef},
  title     = {The light-addressable potentiometric sensor for multi-ion sensing and imaging},
  series = {Methods. 37 (2005), H. 1},
  journal   = {Methods. 37 (2005), H. 1},
  isbn      = {1046-2023},
  pages     = {99 -- 102},
  year      = {2005},
  language  = {en}
}
@article{WernerWagnerMiyamotoetal.2012,
  author    = {Werner, Frederik and Wagner, Torsten and Miyamoto, Ko-ichiro and Yoshinobu, Tatsuo and Sch{\"o}ning, Michael Josef},
  title     = {High speed and high resolution chemical imaging based on a new type of OLED-LAPS set-up},
  series = {Sensors and Actuators B: Chemical},
  volume    = {175},
  journal   = {Sensors and Actuators B: Chemical},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0925-4005},
  doi       = {10.1016/j.snb.2011.12.102},
  pages     = {118 -- 122},
  year      = {2012},
  abstract  = {Light-addressable potentiometric sensors (LAPS) are field-effect-based sensors. A modulated light source is used to define the particular measurement spot to perform spatially resolved measurements of chemical species and to generate chemical images. In this work, an organic-LED (OLED) display has been chosen as a light source. This allows high measurement resolution and miniaturisation of the system. A new developed driving method for the OLED display optimised for LAPS-based measurements is demonstrated. The new method enables to define modulation frequencies between 1 kHz and 16 kHz and hence, reduces the measurement time of a chemical image by a factor of 40 compared to the traditional addressing of an OLED display.},
  language  = {en}
}
@article{KloockMorenoBratovetal.2006,
  author    = {Kloock, Joachim P. and Moreno, Lia and Bratov, A. and Huachupoma, S. and Xu, J. and Wagner, Torsten and Yoshinobu, T. and Ermolenko, Y. and Vlasov, Y. G. and Sch{\"o}ning, Michael Josef},
  title     = {PLD-prepared cadmium sensors based on chalcogenide glasses —ISFET, LAPS and \&\#956;ISE semiconductor structures},
  series = {Sensors and Actuators B: Chemical. 118 (2006), H. 1-2},
  journal   = {Sensors and Actuators B: Chemical. 118 (2006), H. 1-2},
  isbn      = {0925-4005},
  pages     = {149 -- 155},
  year      = {2006},
  language  = {en}
}
@article{WagnerRaoKloocketal.2006,
  author    = {Wagner, Torsten and Rao, C. and Kloock, Joachim P. and Yoshinobu, T. and Otto, R. and Keusgen, M. and Sch{\"o}ning, Michael Josef},
  title     = {"LAPS Card"—A novel chip card-based light-addressable potentiometric sensor (LAPS)},
  series = {Sensors and Actuators B: Chemical. 118 (2006), H. 1-2},
  journal   = {Sensors and Actuators B: Chemical. 118 (2006), H. 1-2},
  isbn      = {0925-4005},
  pages     = {33 -- 40},
  year      = {2006},
  language  = {en}
}
@article{WagnerMolinaYoshinobuetal.2007,
  author    = {Wagner, Torsten and Molina, Roberto and Yoshinobu, Tatsuo and Kloock, Joachim P. and Biselli, Manfred and Canzoneri, Michele and Schnitzler, Thomas and Sch{\"o}ning, Michael Josef},
  title     = {Handheld multi-channel LAPS device as a transducer platform for possible biological and chemical multi-sensor applications},
  series = {Electrochimica Acta. 53 (2007), H. 2},
  journal   = {Electrochimica Acta. 53 (2007), H. 2},
  isbn      = {0013-4686},
  pages     = {305 -- 311},
  year      = {2007},
  language  = {en}
}
@article{ChristiaensAbouzarPoghossianetal.2007,
  author    = {Christiaens, P. and Abouzar, Maryam H. and Poghossian, Arshak and Wagner, Torsten and Bijnens, N. and Williams, O. A. and Daenen, M. and Haenen, K. and Douth{\´e}ret, O. and Haen, J. d´ and Mekhalif, Z. and Sch{\"o}ning, Michael Josef and Wagner, P.},
  title     = {pH sensitivity of nanocrystalline diamond films},
  series = {Physica status solidi (A). 204 (2007), H. 9},
  journal   = {Physica status solidi (A). 204 (2007), H. 9},
  isbn      = {0031-8965},
  pages     = {2925 -- 2930},
  year      = {2007},
  language  = {en}
}
@article{WagnerMolinaBisellietal.2007,
  author    = {Wagner, Torsten and Molina, R. and Biselli, Manfred and Canzoneri, Michele and Schnitzler, Thomas and Yoshinobu, Tatsuo and Sch{\"o}ning, Michael Josef},
  title     = {A light-addressable potentiometric sensor system for fast, simultaneous and spatial detection of the metabolic activity of biological cells},
  series = {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.)},
  journal   = {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.)},
  publisher = {IEEE},
  address   = {Piscataway},
  isbn      = {1-4244-0841-5},
  pages     = {1107 -- 1110},
  year      = {2007},
  language  = {en}
}
@article{ChristiaensAbouzarPoghossianetal.2007,
  author    = {Christiaens, P. and Abouzar, Maryam H. and Poghossian, Arshak and Wagner, Torsten and Bijnens, N. and Williams, O. A. and Daenen, M. and Haenen, K. and Sch{\"o}ning, Michael Josef and Wagner, P.},
  title     = {Nanocrystalline diamond-based field-effect capacitive pH sensor},
  series = {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.)},
  journal   = {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.)},
  publisher = {IEEE},
  address   = {Piscataway},
  isbn      = {1-4244-0841-5},
  pages     = {1891 -- 1894},
  year      = {2007},
  language  = {en}
}
@article{WagnerSchoening2007,
  author    = {Wagner, Torsten and Sch{\"o}ning, Michael Josef},
  title     = {Light-addressable potentiometric sensors (LAPS): recent trends and applications},
  series = {Electrochemical sensor analysis / edited by S. Alegret ...},
  journal   = {Electrochemical sensor analysis / edited by S. Alegret ...},
  publisher = {Elsevier},
  address   = {Amsterdam},
  isbn      = {978-0-444-53053-0},
  pages     = {87 -- 128},
  year      = {2007},
  language  = {en}
}
@article{WagnerKloockSchoening2007,
  author    = {Wagner, Torsten and Kloock, Joachim P. and Sch{\"o}ning, Michael Josef},
  title     = {Determination of cadmium concentration and pH value in aqueous solutions by means of a handheld light-addressable potentiometric sensor (LAPS) device},
  series = {Electrochemical sensor analysis / edited by S. Alegret ...},
  journal   = {Electrochemical sensor analysis / edited by S. Alegret ...},
  publisher = {Elsevier},
  address   = {Amsterdam},
  isbn      = {978-0-444-53133-9},
  pages     = {e35 -- e44},
  year      = {2007},
  language  = {en}
}
@article{WagnerMarisAckermannetal.2007,
  author    = {Wagner, Torsten and Maris, Rob J. and Ackermann, Hans-Josef and Otto, Ralph and Beging, Stefan and Poghossian, Arshak and Sch{\"o}ning, Michael Josef},
  title     = {Handheld measurement device for field-effect sensor structures: Practical evaluation and limitations},
  series = {Sensors and Actuators B: Chemical . 127 (2007), H. 1},
  journal   = {Sensors and Actuators B: Chemical . 127 (2007), H. 1},
  isbn      = {0925-4005},
  pages     = {217 -- 223},
  year      = {2007},
  language  = {en}
}
@article{MiyamotoKuwabaraKanohetal.2009,
  author    = {Miyamoto, K. and Kuwabara, Yohei and Kanoh, Shin'ichiro and Yoshinobu, Tatsuo and Wagner, Torsten and Sch{\"o}ning, Michael Josef},
  title     = {Chemical image scanner based on FDM-LAPS},
  series = {Sensors and Actuators B: Chemical. 137 (2009), H. 2},
  journal   = {Sensors and Actuators B: Chemical. 137 (2009), H. 2},
  publisher = {Elsevier},
  address   = {Amsterdam},
  isbn      = {0925-4005},
  pages     = {533 -- 538},
  year      = {2009},
  language  = {en}
}
@article{MiyamotoSugawaraKanohetal.2010,
  author    = {Miyamoto, Ko-ichiro and Sugawara, Yuri and Kanoh, Shin´ichiro and Yoshinobu, Tatsuo and Wagner, Torsten and Sch{\"o}ning, Michael Josef},
  title     = {Image correction method for the chemical imaging sensor},
  series = {Sensors and Actuators B: Chemical. 144 (2010), H. 2},
  journal   = {Sensors and Actuators B: Chemical. 144 (2010), H. 2},
  pages     = {344 -- 348},
  year      = {2010},
  language  = {en}
}
@article{WagnerWernerMiyamotoetal.2009,
  author    = {Wagner, Torsten and Werner, Frederik and Miyamoto, K. and Sch{\"o}ning, Michael Josef and Yoshinobu, T.},
  title     = {A high-density multi-point LAPS set-up using a VCSEL array and FPGA control},
  series = {Procedia Chemistry. 1 (2009), H. 1},
  journal   = {Procedia Chemistry. 1 (2009), H. 1},
  publisher = {Elsevier},
  address   = {Amsterdam},
  isbn      = {1876-6196},
  pages     = {1483 -- 1486},
  year      = {2009},
  language  = {en}
}
@article{MiyamotoWagnerMimuraetal.2009,
  author    = {Miyamoto, Ko-ichiro and Wagner, Torsten and Mimura, Shuhei and Kanoh, Shin`ichiro and Yoshinobu, Tatsuo and Sch{\"o}ning, Michael Josef},
  title     = {Constant-phase-mode operation of the light-addressable potentiometric sensor},
  series = {Procedia Chemistry. 1 (2009), H. 1},
  journal   = {Procedia Chemistry. 1 (2009), H. 1},
  publisher = {Elsevier},
  address   = {Amsterdam},
  isbn      = {1876-6196},
  pages     = {1487 -- 1490},
  year      = {2009},
  language  = {en}
}
@article{WagnerWernerMiyamotoetal.2012,
  author    = {Wagner, Torsten and Werner, Frederik and Miyamoto, Ko-Ichiro and Sch{\"o}ning, Michael Josef and Yoshinobu, Tatsuo},
  title     = {Development and characterisation of a compact light-addressable potentiometric sensor (LAPS) based on the digital light processing (DLP) technology for flexible chemical imaging},
  series = {Sensors and Actuators B: Chemical},
  volume    = {170},
  journal   = {Sensors and Actuators B: Chemical},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0925-4005},
  doi       = {10.1016/j.snb.2010.12.003},
  pages     = {34 -- 39},
  year      = {2012},
  abstract  = {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.},
  language  = {en}
}