Triboelectric effect-modulated varifocal liquid lens.
Triboelectric effect-modulated varifocal liquid lens.
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摩擦电效应调制变焦液体透镜
DOI：
10.1038/s41378-020-0174-y
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发表时间：
2020
影响因子：
7.9
通讯作者：
Zhang C
中科院分区：
文献类型：
--
作者：
Fang C;Cao Y;Jiang D;Tian J;Zhang C
电调制变焦液体透镜通常由外部高压电源调制，在人工光学系统中具有广阔的应用前景，引起了人们的广泛关注。在这里，我们展示了一种基于摩擦电纳米发电机的变焦液体透镜(TVLL)，这种透镜可以通过外部机械滑动直接调节焦距。Teng通过摩擦电荷在非对称电极上的转移产生介电泳力，用于连续改变凹凸之间的气液界面形状，而不需要任何复杂的Boost转换器。此外，还演示了一种基于TVLL对光束的精确调制效应的摩擦电放大镜。在这项工作中，Teng作为一种介质，通过外部机械刺激来调制和精确控制液体透镜的焦距，这在微光机电系统(MOEMS)、人机交互、人工视觉系统等方面都有很大的应用。
Electrically modulated varifocal liquid lenses, which are usually modulated by an external high voltage power source, have attracted much attention due to their bright application prospects in artificial optical systems. Here, a triboelectric nanogenerator (TENG)-based varifocal liquid lens (TVLL) has been demonstrated, in which the focal length can be directly modulated by external mechanical sliding. A dielectrophoretic force is generated by the TENG through the transfer of triboelectric charges in the asymmetric electrodes, which is used to continuously change the shape of the air–liquid interface between concave and convex without any complicated boost converter. Moreover, a triboelectric magnifying glass based on the accurate modulation effect of the TVLL on a light beam has been demonstrated. In this work, the TENG is used as a medium to modulate and accurately control the focal length of the liquid lens by an external mechanical stimulus, which may have great applications in micro-optical-electro-mechanical systems (MOEMS), human–machine interaction, artificial vision systems, etc.
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