Mie and Bragg Plasmons in Subwavelength Silver Semi-Shells

IF 13 2区 材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY
Small Pub Date : 2008-12-04 DOI:10.1002/smll.200800203
Abbas I. Maaroof, Michael B. Cortie, Nadine Harris, Lech Wieczorek
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引用次数: 67

Abstract

2D arrays of silver semi-shells of 100 and 200 nm diameter display complex reflection and transmission spectra in the visible and near-IR. Here these spectral features are deconstructed and it is demonstrated that they result from the coupling of incident light into a delocalized Bragg plasmon, and the latter's induction of localized Mie plasmons in the arrays. These phenomena permit the excitation of transverse dipolar plasmon resonances in the semi-shells despite an ostensibly unfavorable orientation with respect to normally incident light. The resulting spectral feature in the mid-visible is strong and tunable.

Abstract Image

亚波长银半壳层中的Mie和Bragg等离激子
直径为100 nm和200 nm的二维银半壳阵列在可见光和近红外波段显示出复杂的反射和透射光谱。本文对这些光谱特征进行了解构,并证明了它们是由入射光耦合到离域布拉格等离子体,以及后者在阵列中诱导局域Mie等离子体引起的。这些现象允许在半壳层中激发横向偶极等离子体共振,尽管相对于正常入射光表面上不利的方向。由此产生的光谱特征在中可见光是强和可调的。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Small
Small 工程技术-材料科学:综合
CiteScore
17.70
自引率
3.80%
发文量
1830
审稿时长
2.1 months
期刊介绍: Small serves as an exceptional platform for both experimental and theoretical studies in fundamental and applied interdisciplinary research at the nano- and microscale. The journal offers a compelling mix of peer-reviewed Research Articles, Reviews, Perspectives, and Comments. With a remarkable 2022 Journal Impact Factor of 13.3 (Journal Citation Reports from Clarivate Analytics, 2023), Small remains among the top multidisciplinary journals, covering a wide range of topics at the interface of materials science, chemistry, physics, engineering, medicine, and biology. Small's readership includes biochemists, biologists, biomedical scientists, chemists, engineers, information technologists, materials scientists, physicists, and theoreticians alike.
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