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使用化学驱动的微型抓手进行取置.

Jatinder S Randhawa¹, Timothy G Leong, Noy Bassik

¹Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland 21218, USA.

Journal of the American Chemical Society

|December 5, 2008

概括

化学触发的微型抓手提供了一种新的方法,可以在没有外部电源的情况下操纵微型物体. 这些可逆工具利用化学反应来精确处理微物体,为新的微系统铺平了道路.

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科学领域:

材料科学材料科学材料科学
微型技术微型技术
化学工程是化学工程的重要组成部分.

背景情况:

微观物体操纵对于各种科学和工业应用至关重要.
现有的微操作系统往往依赖于复杂的电动驱动 (微电机系统).
需要更简单,独立于功率的微操作工具.

研究的目的:

为了展示一次性使用,化学触发,可逆的微型抓手的新概念.
探索使用化学刺激来启动微尺度工具.
为微化学机械系统 (MCMS) 奠定基础.

主要方法:

开发具有对化学变化敏感的三层关节的移动抓器.
使用酸 (CH(3) COOH) 触发抓柄关闭.
使用过氧化 (H(2) O(2)) 触发抓柄打开.
使用多层薄膜方法模拟抓手的启动.

主要成果:

成功演示了化学触发的可逆的微型抓手操作.
通过三层接头的机械性能变化,按量激活抓手.
在挑选和放置200微米直径的管子和珠子方面已证明有用.
抓手操作不需要外部电源.

结论:

化学触发的微型抓手是电动系统的可行替代品.
这项技术使得功能微化学机械系统 (MCMS) 的开发成为可能.
开发的微型抓手为微型对象操纵提供了一个新的范式.

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