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Novel radiation mechanisms, including light emission from electrically excited graphene plasmons, are also being explored for the development of compact narrowband THz sources. Keywords: graphene; hot-carrier effects; plasmonics; terahertz optoelectronics 1 Introduction The terahertz (THz) spectral region, ...
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Thin layers of in-plane anisotropic materials can support ultraconfined polaritons, whose wavelengths depend on the propagation direction. Such polaritons hold potential for the exploration of fundamental material properties and the development of novel
1. Introduction It has been demonstrated that scattering-scanning near-field optical microscopy (s- SNOM) is a powerful instrument for determining nanoscale dielectric characteristics of the material [1]. The s-SNOM provides a new method for nanoimaging or nanomaterial identification by combining with...