Plasmomechanical systems are an emerging class of devices that hold great promise for manipulating light-matter interactions with high speed and subdiffraction spatial resolution. However, realizing their potential requires developing active plasmomechanical systems that can localize their functionality to the level of an individual subwavelength plasmonic resonator. Here, we present an active, electrically tunable plasmomechanical system that uses a localized-gap plasmonic resonator to mediate optical, thermal, and mechanical interactions within a subwavelength footprint. Our device enables facile electromechanical modulation of localized plasmons, selective subdiffraction transduction of nanomechanical motion, and functions as a plasmomechanical oscillator that can be injection-locked to, and thus amplify, weak external stimuli. These functionalities benefit applications in nanomechanical sensing, spatial light modulators, and reconfigurable metasurfaces.

中文翻译：

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电调谐的等离子机械振荡器，用于局部调制，转导和放大

等离子体机械系统是一类新兴的设备，它们有望以高速和亚衍射空间分辨率操纵光与物质的相互作用。但是，要实现其潜力，就需要开发有源的等离子机械系统，以将其功能定位到单个亚波长等离子共振器的水平。在这里，我们介绍了一个主动的，电可调的等离子体力学系统，该系统使用局部间隙等离子体共振器来调解亚波长足迹内的光学，热和机械相互作用。我们的设备能够实现对局部等离激元的轻松机电调制，纳米机械运动的选择性亚衍射转换，并可以作为等离子激元振荡器，可以注入锁定，从而放大弱的外部刺激。