Liquid and back gate coupling effect: towards biosensing with lowest detection limit

Sergii Pud; Jing Li; Volodymyr Sibiliev; Mykhaylo Petrychuk; Valery Kovalenko; Andreas Offenhäusser; Svetlana Vitusevich

doi:10.1021/nl403748x

Liquid and back gate coupling effect: towards biosensing with lowest detection limit

Mesoscale and Nanoscale Physics 2015-06-18 v1

Authors: Sergii Pud , Jing Li , Volodymyr Sibiliev , Mykhaylo Petrychuk , Valery Kovalenko , Andreas Offenhäusser , Svetlana Vitusevich

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

We employ noise spectroscopy and transconductance measurements to establish the optimal regimes of operation for our fabricated silicon nanowire field-effect transistors (Si NW FETs) sensors. A strong coupling between the liquid gate and back gate (the substrate) has been revealed and used for optimisation of signal-to-noise ratio in sub-threshold as well as above-threshold regimes. Increasing the sensitivity of Si NW FET sensors above the detection limit has been predicted and proven by direct experimental measurements.

Keywords

field-effect transistors nanowire physics sensors and measurement

Cite

@article{arxiv.1311.7628,
  title  = {Liquid and back gate coupling effect: towards biosensing with lowest detection limit},
  author = {Sergii Pud and Jing Li and Volodymyr Sibiliev and Mykhaylo Petrychuk and Valery Kovalenko and Andreas Offenhäusser and Svetlana Vitusevich},
  journal= {arXiv preprint arXiv:1311.7628},
  year   = {2015}
}

Comments

18 pages, 6 figures

Liquid and back gate coupling effect: towards biosensing with lowest detection limit

Abstract

Keywords

Cite

Comments

Related papers