基于石墨的纳机电系统的外驱动可控振动（英文）  

Controlled driven oscillations of graphite-based NEMS

作　　者：李健文[1,2] 刘念华[3] 

机构地区：[1]南昌大学材料科学工程学院,南昌330031 [2]南昌工程学院理学院,南昌330099 [3]南昌大学高等研究院,南昌330031

出　　处：《四川大学学报（自然科学版）》2017年第1期101-107,共7页Journal of Sichuan University(Natural Science Edition)

基　　金：国家重大基础研究计划(973计划)(2013CB934200);国家自然科学基金重点项目(10832005);国家自然科学基金项目(11264030)

摘　　要：采用数值计算方法研究了基于石墨的纳机电系统在周期性简谐驱动力作用下实现稳定振动的条件.确定了获得持久稳定的振动的系统和控制力参数.计算和分析了两块石墨片等长及不等长时纳米振子的操作特性.结果表明,通过选择合适的驱动振幅和频率,能够实现石墨片的持久稳定振动.该方法对于进一步研究纳机电系统的设计有重要的参考价值.The conditions controlling the stable oscillation of graphite-based nanoelectromechanical systems （NEMS） are investigated under periodical harmonic driving force with numerical computational methods. The parameters of the system and control force which allow obtaining the sustained stable oscillation at a constant frequency are determined. The operating characteristics of the nano-oscillator are calculated and analyzed for the equal-length and unequal-length graphite flakes. The calculated results show that the sustained stable oscillation of the graphite flakes can be realized by properly choosing the amplitude and the initial phase of the periodical harmonic driving force. The methods reported here are believed to have important implications in NEMS design.

关 键 词：纳机电系统 纳米振子 驱动频率 稳定振动 石墨 

分 类 号：TB34[一般工业技术—材料科学与工程]