High-order plasmon resonances in an Ag/Al2O3 core/shell nanorice
摘要
Using numerical simulation,we investigate the high-order plasmon resonances in individual nanostructures of an Ag nanorice core surrounded by an Al2O3shell.The peak positions of localized surface plasmon resonances(LSPRs)are red-shifted exponentially with the increase of the dielectric shell thickness.This is due to the exponential decay of electromagnetic field intensity in the direction perpendicular to the interface.This exponential red-shift depends on the wavelength of the resonance peak instead of the resonance order.In addition,we find that the LSPRs in an Ag nanorice of 60-nm width can be perfectly described by a single linear function.These features make nanorice an ideal platform for sensing applications.
引用本文（GB/T 7714）
陈立, 魏红, 陈克求, 等. High-order plasmon resonances in an Ag/Al2O3 core/shell nanorice[J]. 中国物理B：英文版, 2014.
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