基于介电力的纳米机械系统的通用传导方案
Quirin P Unterreithmeier1, Eva M Weig, Jörg P Kotthaus
1Fakultät für Physik and Center for NanoScience (CeNS), Ludwig-Maximilians-Universität, Geschwister-Scholl-Platz 1, 80539 München, Germany.
Nature
|April 28, 2009
概括
研究人员利用介电力来激活和检测纳米电机系统 (NEMS) 中的运动. 这种通用方法使得纳米机械共振器的精确控制和调能够用于先进的应用.
科学领域:
- 物理 物理学 物理
- 电气工程 电气工程
- 材料科学 材料科学 材料科学
背景情况:
- 介电力源于在不均的电场中的极化物体中产生,宏观的例子是水流偏移.
- 现有的应用包括光学子和用于粒子操纵的介电泳.
- 纳米电机系统 (NEMS) 需要针对纳米机械运动进行优化驱动和检测方案.
研究的目的:
- 将介电力概念扩展到纳米电机系统 (NEMS).
- 为NEMS使用介电梯度力开发一种可控和局部传导方法.
- 为了实现NEMS的通用激活和检测,促进新的应用.
主要方法:
- 使用芯片上的电极产生电场梯度.
- 在电场梯度内对电介电共振器进行极化,以诱导吸引力.
- 在高频率调节电场以执行操作,并逆转检测原理.
主要成果:
- 展示了NEMS的通用,高效,宽带和可扩展的执行方案.
- 通过改变共振器-电极分离来实现机械共振频率的电压调节.
- 成功证明了对NEMS的参数执行和通用介电检测.
结论:
- 介电梯度力为启动和检测NEMS提供了一个强大的,通用的方法.
- 这种方法允许使用任意的极化材料,从而有可能实现超低散射NEMS.
- 该技术提供了简单的电压调节,适用于信号处理和传感的基础研究和应用.
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