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Author

  • David Rolka (8)
  • Michael J. Schöning (8)
  • Arshak Poghossian (5)
  • Heiko Iken (2)
  • Monika Turek (2)
  • Niko Näther (2)
  • A. V. Legin (1)
  • C. Demuth (1)
  • Christina Wege (1)
  • Claudia Koch (1)
  • D. Brinkmann (1)
  • D. O. Kirsanov (1)
  • Derick Yongabi (1)
  • Geertrui Rasschaert (1)
  • Gideon Wackers (1)
  • Hassan Arida (1)
  • Joachim P. Kloock (1)
  • Johan Robbens (1)
  • M. Koudelka-Hep (1)
  • M. M. Khaydukova (1)
+ more

Year of publication

  • 2021 (1)
  • 2018 (1)
  • 2014 (1)
  • 2009 (1)
  • 2006 (1)
  • 2005 (2)
  • 2004 (1)

Document Type

  • Article (7)
  • Conference Proceeding (1)

Institute

  • Fachbereich Medizintechnik und Technomathematik (8)
  • INB - Institut für Nano- und Biotechnologien (8)

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Two microcell flow-injection analysis (FIA) platforms for capacitive silicon-based field-effect sensors (2005)
Niko Näther ; David Rolka ; Arshak Poghossian ; M. Koudelka-Hep ; Michael J. Schöning
Integration of a capacitive EIS sensor into a FIA system for pH and penicillin determination (2004)
David Rolka ; Arshak Poghossian ; Michael J. Schöning
CIP (cleaning-in-place) suitable “non-glass” pH sensor based on a Ta2O5-gate EIS structure (2005)
Michael J. Schöning ; D. Brinkmann ; David Rolka ; C. Demuth ; Arshak Poghossian
A Novel Thin-Film Copper Array Based on an Organic/Inorganic Sensor Hybrid: Microfabrication, Potentiometric Characterization, and Flow-Injection Analysis Application (2009)
Hassan Arida ; Monika Turek ; David Rolka ; Michael J. Schöning
Multivariate processing of atomic-force microscopy images for detection of the response of plasticized polymeric membranes (2014)
M. M. Khaydukova ; O. A. Zadorozhnaya ; D. O. Kirsanov ; Heiko Iken ; David Rolka ; Michael J. Schöning ; V. A. Babain ; Yu. G. Vlasov ; A. V. Legin
A semiconductor-based field-effect platform for (bio-)chemical and physical sensors: From capacitive EIS sensors and LAPS over ISFETs to nano-scale devices (2006)
Michael J. Schöning ; Maryam H. Abouzar ; Torsten Wagner ; Niko Näther ; David Rolka ; Tatsuo Yoshinobu ; Joachim P. Kloock ; Monika Turek ; Sven Ingebrandt ; Arshak Poghossian
Selective Campylobacter detection and quantification in poultry: A sensor tool for detecting the cause of a common zoonosis at its source (2021)
Stella Givanoudi ; Peter Cornelis ; Geertrui Rasschaert ; Gideon Wackers ; Heiko Iken ; David Rolka ; Derick Yongabi ; Johan Robbens ; Michael J. Schöning ; Marc Heyndrickx ; Patrick Wagner
Field-effect biosensor using virus particles as scaffolds for enzyme immobilization (2018)
Arshak Poghossian ; Melanie Jablonski ; Claudia Koch ; Thomas Bronder ; David Rolka ; Christina Wege ; Michael J. Schöning
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.
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