MEMS design and modelling based on resonant gate transistor for cochlear biomimetical application

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2 Citations (Scopus)

Abstract

The electromechanical behaviour and frequency response of the human cochlear have been described to be mimicked using an array of resonant gate transistors (RGT). Presented in this paper are the mathematical model, geometrical analysis and novel design of RGT, employed for the physical model development of the cochlea. In an array of RGTs, the aluminium bridge gate structures with length of 0.57–1.62 mm transduce the sound input signal into mechanical vibrations at audible frequency range of 1–8 kHz. The channels underneath the bridge gates transduce the mechanical vibrations into small signal drain currents with reasonable estimated sensitivity of 4–17 nA/Pa. The gain amplification and resonant frequency reduction of RGT with respect to the voltage applied onto the bridge gate structure highlight the adaptive characteristics of a human cochlear. The proposed modelling approach can aid the fabrication design of RGT for cochlear model.

Original languageEnglish
Pages (from-to)1-14
Number of pages14
JournalMicrosystem Technologies
DOIs
Publication statusAccepted/In press - 20 Apr 2016

Fingerprint

microelectromechanical systems
MEMS
Transistors
transistors
Aluminum bridges
Drain current
Vibrations (mechanical)
Frequency response
Amplification
Natural frequencies
Acoustic waves
cochlea
vibration
Mathematical models
Fabrication
Electric potential
frequency response
resonant frequencies
mathematical models
frequency ranges

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Hardware and Architecture
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

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abstract = "The electromechanical behaviour and frequency response of the human cochlear have been described to be mimicked using an array of resonant gate transistors (RGT). Presented in this paper are the mathematical model, geometrical analysis and novel design of RGT, employed for the physical model development of the cochlea. In an array of RGTs, the aluminium bridge gate structures with length of 0.57–1.62 mm transduce the sound input signal into mechanical vibrations at audible frequency range of 1–8 kHz. The channels underneath the bridge gates transduce the mechanical vibrations into small signal drain currents with reasonable estimated sensitivity of 4–17 nA/Pa. The gain amplification and resonant frequency reduction of RGT with respect to the voltage applied onto the bridge gate structure highlight the adaptive characteristics of a human cochlear. The proposed modelling approach can aid the fabrication design of RGT for cochlear model.",
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