Title of article :
Frequency self-tuning of ZnO nanoresonator
Author/Authors :
Jie-Mei Wang، نويسنده , , Lijie Li، نويسنده ,
Issue Information :
ماهنامه با شماره پیاپی سال 2012
Pages :
7
From page :
206
To page :
212
Abstract :
This paper has modeled a doubly clamped zinc oxide nanoelectromechanical resonator to investigate the self-tuning mechanism of resonant frequency based on joule heating effect. From the presented theoretical analysis, it is observed that the resonant frequencies are related to thermal expansion coefficient α, Youngʹs modulus E, thermal conductivity k, density ρ, side length a, and length L of the nanoresonator, as well as external parameters such as input electrical power P. Clearly one of approaches to achieve tuning of resonant frequencies of the resonator is to adjust the externally applied electrical power P. We present an analytical solution and a finite element model to simulate this effect. It is found from FEM results that the first resonant frequency varies from around 44.71–110.77 MHz, as the driving voltage increasing from 0.2 V to 5.2 V. The tunability is calculated to be around 13.2 MHz/V, making the device highly applicable in the area of signal processing.
Journal title :
Physica E Low-dimensional Systems and Nanostructures
Serial Year :
2012
Journal title :
Physica E Low-dimensional Systems and Nanostructures
Record number :
1049135
Link To Document :
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