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Author

  • Melanie Jablonski (8)
  • Michael J. Schöning (8)
  • Arshak Poghossian (6)
  • Christina Wege (4)
  • Denise Molinnus (3)
  • Michael Keusgen (3)
  • Claudia Koch (2)
  • Johannes Bongaerts (2)
  • Lukas Muschallik (2)
  • Petra Siegert (2)
  • Thomas Bronder (2)
  • Torsten Wagner (2)
  • Carina Ronja Kipp (1)
  • Christian Wege (1)
  • David Rolka (1)
  • Felix Münstermann (1)
  • Jasmina Nork (1)
  • Marcel Leinhos (1)
  • Martina Pohl (1)
  • Robin Severin (1)
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Year of publication

  • 2021 (3)
  • 2020 (2)
  • 2018 (1)
  • 2017 (1)
  • 2015 (1)

Document Type

  • Article (7)
  • Conference Proceeding (1)

Keywords

  • Capacitive field-effect sensor (1)
  • Label-free detection (1)
  • Plant virus (1)
  • Tobacco mosaic virus (TMV) (1)
  • Zeta potential (1)
  • acetoin (1)
  • acetoin reductase (1)
  • alcoholic beverages (1)
  • biosensors (1)
  • capacitive field-effect sensors (1)

Institute

  • INB - Institut für Nano- und Biotechnologien (8) (remove)

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Studying the spatially resolved immobilisation of enzymes on a capacitive field-effect structure by means of nano-spotting (2015)
Stefan Beging ; Marcel Leinhos ; Melanie Jablonski ; Arshak Poghossian ; Michael J. Schöning
Synthesis of α-hydroxy ketones and vicinal (R, R)-diols by Bacillus clausii DSM 8716 T butanediol dehydrogenase (2020)
Lukas Muschallik ; Denise Molinnus ; Melanie Jablonski ; Carina Ronja Kipp ; Johannes Bongaerts ; Martina Pohl ; Torsten Wagner ; Michael J. Schöning ; Thorsten Selmer ; Petra Siegert
Field-Effect Sensors for Virus Detection: From Ebola to SARS-CoV-2 and Plant Viral Enhancers (2020)
Arshak Poghossian ; Melanie Jablonski ; Denise Molinnus ; Christina Wege ; Michael J. Schöning
Capacitive Field-Effect Biosensor Studying Adsorption of Tobacco Mosaic Virus Particles (2021)
Melanie Jablonski ; Arshak Poghossian ; Robin Severin ; Michael Keusgen ; Christian Wege ; Michael J. Schöning
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
Field-Effect Biosensors Modified with Tobacco Mosaic Virus Nanotubes as Enzyme Nanocarrier (2017)
Melanie Jablonski ; Claudia Koch ; Thomas Bronder ; Arshak Poghossian ; Christina Wege ; Michael J. Schöning
Capacitive field‐effect biosensor applied for the detection of acetoin in alcoholic beverages and fermentation broths (2021)
Melanie Jablonski ; Felix Münstermann ; Jasmina Nork ; Denise Molinnus ; Lukas Muschallik ; Johannes Bongaerts ; Torsten Wagner ; Michael Keusgen ; Petra Siegert ; Michael J. Schöning
An acetoin biosensor based on a capacitive electrolyte–insulator–semiconductor (EIS) structure modified with the enzyme acetoin reductase, also known as butane-2,3-diol dehydrogenase (Bacillus clausii DSM 8716T), is applied for acetoin detection in beer, red wine, and fermentation broth samples for the first time. The EIS sensor consists of an Al/p-Si/SiO2/Ta2O5 layer structure with immobilized acetoin reductase on top of the Ta2O5 transducer layer by means of crosslinking via glutaraldehyde. The unmodified and enzyme-modified sensors are electrochemically characterized by means of leakage current, capacitance–voltage, and constant capacitance methods, respectively.
Detection of plant virus particles with a capacitive field-effect sensor (2021)
Melanie Jablonski ; Arshak Poghossian ; Michael Keusgen ; Christina Wege ; Michael J. Schöning
Plant viruses are major contributors to crop losses and induce high economic costs worldwide. For reliable, on-site and early detection of plant viral diseases, portable biosensors are of great interest. In this study, a field-effect SiO2-gate electrolyte-insulator-semiconductor (EIS) sensor was utilized for the label-free electrostatic detection of tobacco mosaic virus (TMV) particles as a model plant pathogen. The capacitive EIS sensor has been characterized regarding its TMV sensitivity by means of constant-capacitance method. The EIS sensor was able to detect biotinylated TMV particles from a solution with a TMV concentration as low as 0.025 nM. A good correlation between the registered EIS sensor signal and the density of adsorbed TMV particles assessed from scanning electron microscopy images of the SiO2-gate chip surface was observed. Additionally, the isoelectric point of the biotinylated TMV particles was determined via zeta potential measurements and the influence of ionic strength of the measurement solution on the TMV-modified EIS sensor signal has been studied.
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