A polysaccharide bioprotonic field-effect transistor

Chao Zhong, Yingxin Deng, Anita Fadavi Roudsari, Adnan Kapetanovic, M.P. Anantram and Marco Rolandi ()
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Chao Zhong: University of Washington
Yingxin Deng: University of Washington
Anita Fadavi Roudsari: University of Waterloo, Waterloo, Ontario N2L 3G1, Canada.
Adnan Kapetanovic: University of Washington
M.P. Anantram: University of Washington
Marco Rolandi: University of Washington

Nature Communications, 2011, vol. 2, issue 1, 1-5

Abstract: Abstract In nature, electrical signalling occurs with ions and protons, rather than electrons. Artificial devices that can control and monitor ionic and protonic currents are thus an ideal means for interfacing with biological systems. Here we report the first demonstration of a biopolymer protonic field-effect transistor with proton-transparent PdHx contacts. In maleic-chitosan nanofibres, the flow of protonic current is turned on or off by an electrostatic potential applied to a gate electrode. The protons move along the hydrated maleic–chitosan hydrogen-bond network with a mobility of ~4.9×10−3 cm2 V−1 s−1. This study introduces a new class of biocompatible solid-state devices, which can control and monitor the flow of protonic current. This represents a step towards bionanoprotonics.

Date: 2011
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DOI: 10.1038/ncomms1489

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