Zhu Yunxuan, Raschke Markus B, Natelson Douglas, Cui Longji
Department of Physics and Astronomy, Rice University, Houston, TX, USA.
Department of Physics, and JILA, University of Colorado Boulder, Boulder, CO, USA.
Nanophotonics. 2024 Mar 28;13(13):2281-2322. doi: 10.1515/nanoph-2023-0710. eCollection 2024 May.
Plasmonic modes confined to metallic nanostructures at the atomic and molecular scale push the boundaries of light-matter interactions. Within these extreme plasmonic structures of ultrathin nanogaps, coupled nanoparticles, and tunnelling junctions, new physical phenomena arise when plasmon resonances couple to electronic, exitonic, or vibrational excitations, as well as the efficient generation of non-radiative hot carriers. This review surveys the latest experimental and theoretical advances in the regime of extreme nano-plasmonics, with an emphasis on plasmon-induced hot carriers, strong coupling effects, and electrically driven processes at the molecular scale. We will also highlight related nanophotonic and optoelectronic applications including plasmon-enhanced molecular light sources, photocatalysis, photodetection, and strong coupling with low dimensional materials.
局限于原子和分子尺度的金属纳米结构中的等离激元模式拓展了光与物质相互作用的边界。在这些由超薄纳米间隙、耦合纳米颗粒和隧道结构成的极端等离激元结构中，当等离激元共振与电子、激子或振动激发耦合时，会出现新的物理现象，同时还能高效产生非辐射热载流子。本综述概述了极端纳米等离激元领域的最新实验和理论进展，重点关注等离激元诱导的热载流子、强耦合效应以及分子尺度的电驱动过程。我们还将强调相关的纳米光子学和光电子学应用，包括等离激元增强分子光源、光催化、光电探测以及与低维材料的强耦合。
