ZHANG Qing-wei, WEN Ting-dun. Design of displacement transducer based on resonant tunneling film[J]. 2009, 28(2): 66-67. DOI: 10.13873/j.1000-97872009.02.028.
基于共振隧穿的位移传感器设计
摘要
运用了一种新效应——介观压阻效应
以A lAs/GaAs/A lAs共振隧穿双势垒(DBRT)结构薄膜作为力敏元件
设计了一种压阻式微位移传感器。通过分析、计算和模拟得到了它的输入、输出特性和灵敏度
把它与同类传感器做了比较
结果显示:DBRT结构可以提高灵敏度、调节灵敏度。为设计介观压阻式微位移传感器提供了理论依据。
Abstract
A new effect—meso-piezoresistive effect is used
took GaAs/AlAs/InGaAs double-barrier resonant tunneling(DBRT)film as stress sensitive component
a piezoresistive micro-displacement transducer is designed.Its in-out characteristic and sensitivity are obtained by analysis
calculation and simulation
it is compared with congeneric sensor.The results show that the double-barrier resonant tunneling may promote and adjust sensitivity.It offers a theory basis for devising meso-piezoresistive micro-displacement transducers.