Plasmonics is one of the most used domains for applications to optical devices, biological and chemical sensing, and non-linear optics, for instance. Indeed, plasmonics enables confining the electromagnetic field at the nanoscale. The resonances of plasmonic systems can be set in a given domain of a spectrum by adjusting the geometry, the spatial arrangement, and the nature of the materials. Moreover, symmetry breaking can be used for the further improvement of the optical properties of the plasmonic systems. In the last three years, great advances in or insights into the use of symmetry breaking in plasmonics have occurred. In this mini-review, we present recent insights and advances on the use of symmetry breaking in plasmonics for applications to chemistry, sensing, devices, non-linear optics, and chirality.

中文翻译：

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对称破缺在等离子体学中的应用

例如，等离子体是光学设备、生物和化学传感以及非线性光学应用中最常用的领域之一。事实上，等离子体激元能够将电磁场限制在纳米尺度上。通过调整几何形状、空间排列和材料的性质，可以在光谱的给定域中设置等离子体系统的共振。此外，对称破坏可用于进一步改善等离子体系统的光学特性。在过去的三年中，在等离子体激元中使用对称性破缺方面取得了巨大的进步或见解。在这篇小型综述中，我们介绍了在等离子体学中对称破坏在化学、传感、设备、非线性光学和手性方面的应用的最新见解和进展。