Alexander D. Fuqua, Yufei Wang, Bin Wang, Andrea R. Tao
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引用次数: 0
Abstract
Shaped metal nanoparticles arranged in specific patterns and orientations can induce plasmon coupling, resulting in unique spectral features and highly localized electric fields. Nanocubes (NCs), for example, possess quadrupolar plasmon resonances that give rise to strong optical absorption and high electric field strengths concentrated at the NC corners and edges. While coupling of these resonance modes has been extensively studied in face-oriented NCs, recent experimental achievements have made edge-oriented NCs of particular interest. In this study, we study Ag NCs arranged in various edge-to-edge configurations, including one-dimensional (1D) chains and a two-dimensional (2D) checkerboard lattice. We explore the spectral and near-field properties resulting from the coupling of a NC quadrupolar mode in these different morphological scenarios.
期刊介绍:
Plasmonics is an international forum for the publication of peer-reviewed leading-edge original articles that both advance and report our knowledge base and practice of the interactions of free-metal electrons, Plasmons.
Topics covered include notable advances in the theory, Physics, and applications of surface plasmons in metals, to the rapidly emerging areas of nanotechnology, biophotonics, sensing, biochemistry and medicine. Topics, including the theory, synthesis and optical properties of noble metal nanostructures, patterned surfaces or materials, continuous or grated surfaces, devices, or wires for their multifarious applications are particularly welcome. Typical applications might include but are not limited to, surface enhanced spectroscopic properties, such as Raman scattering or fluorescence, as well developments in techniques such as surface plasmon resonance and near-field scanning optical microscopy.