Capillary origami controlled by an electric field
Capillary origami controlled by an electric field
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DOI：
10.1039/c0sm00004c
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发表时间：
2010-09
期刊：
影响因子：
3.4
通讯作者：
M. Piñeirua;J. Bico;B. Roman
中科院分区：
文献类型：
--
作者：
M. Piñeirua;J. Bico;B. Roman
我们通过实验展示了电场如何控制液滴周围弹性薄膜的折叠和展开。当电压增加到临界值以上时，膜完全展开。尽管结构会因较低的临界张力而关闭，但这种转变是可逆的。我们根据表面张力、弹性和电能之间的相互作用提出了这些临界电压的比例定律。这些比例定律与实验和问题的简化二维模拟定性一致，为设计由电场驱动的实用微型设备提供了有用的工具。
We show experimentally how an electric field can control the folding and unfolding of a thin elastic membrane around a liquid droplet. As the voltage is increased above a critical value the membrane unfolds completely. The transition is reversible, although the structure closes back for a lower critical tension. We propose scaling laws for these critical voltages based on the interaction between surface tension, elastic and electric energies. These scaling laws are in qualitative agreement with experiments and a simplified 2D simulation of the problem, providing a useful tool for designing practical micro-devices actuated by an electric field.