期刊
NATURE MATERIALS
卷 8, 期 1, 页码 47-51出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/NMAT2335
关键词
-
类别
资金
- US Department of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344]
Although actuation in biological systems is exclusively powered by chemical energy, this concept has not been realized in man-made actuator technologies, as these rely on generating heat or electricity first(1). Here, we demonstrate that surface-chemistry-driven actuation can be realized in high-surface-area materials such as nanoporous gold. For example, we achieve reversible strain amplitudes of the order of a few tenths of a per cent by alternating exposure of nanoporous Au to ozone and carbon monoxide. The effect can be explained by adsorbate-induced changes of the surface stress(2), and can be used to convert chemical energy directly into a mechanical response, thus opening the door to surface-chemistry-driven actuator and sensor technologies.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据