MEMS design and modelling based on resonant gate transistor for cochlear biomimetical application
MEMS design and modelling based on resonant gate transistor for cochlear biomimetical application
复制标题
DOI：
10.1007/s00542-016-2937-9
复制
发表时间：
2017-07
期刊：
影响因子：
--
通讯作者：
R. Latif;B. Majlis;R. Cheung
中科院分区：
文献类型：
--
作者：
R. Latif;B. Majlis;R. Cheung
人类耳蜗的机电行为和频率响应已经被描述为使用谐振栅极晶体管（RGT）的阵列来模仿。本文介绍了用于耳蜗物理模型研制的RGT的数学模型、几何分析和新颖设计。在RGT阵列中，长度为0.57-1.62 mm的铝桥门结构将声音输入信号转换为1-8 kHz可听频率范围内的机械振动。桥栅下方的沟道将机械振动转换为小信号漏极电流，合理估计灵敏度为4-17 nA/Pa。RGT相对于施加到桥栅结构上的电压的增益放大和谐振频率降低突出了人类耳蜗的自适应特性。所提出的建模方法可以辅助耳蜗模型RGT的制作设计。
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.