Controlling surface plasmon interference in branched silver nanowire structures

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	Controlling surface plasmon interference in branched silver nanowire structures
	Wei, H ; Xu, HX
刊名	NANOSCALE
	2012
卷号	4 期号:22 页码:7149
关键词	ENHANCED RAMAN-SCATTERING WAVE-GUIDES RESONANCE SENSORS PROPAGATION NANOPARTICLES SPECTROSCOPY GENERATION MOLECULES ANTENNAS
ISSN号	2040-3364
通讯作者	Xu, HX: Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Box 603-146, Beijing 100190, Peoples R China.
中文摘要	Using quantum dot fluorescence imaging, we investigated the interference of surface plasmon beams in branched silver nanowire structures. Depending on the phases and polarizations of the incident light, interferences of plasmon beams modulate the plasmon propagation in the branched structures and the output light intensity in the distal ends. The interference visibility is strongly dependent on the incident polarization at the main wire terminal, and the mechanism is revealed by quantum dot fluorescence imaging of the near field distribution of propagating plasmons. The near field distribution pattern resulting from the beating of different plasmon modes plays a critical role in the plasmon interference. The overlap of the antinode in the near field pattern with the connection junction in the nanowire structure is required for a large interference visibility, since the overlap makes the electric field intensity difference of the two plasmon beams smaller. It is found that the plasmon interference is strongly dependent on the polarization of the excitation light at the main wire terminal, but weakly dependent on the polarization at the branch wire terminal.
收录类别	SCI
资助信息	MOST [2009CB930700]; NSFC [10625418, 10874233, 11004237, 11134013]; Knowledge Innovation Project [KJCX2-EW-W04]; Youth Innovation Promotion Association of CAS
语种	英语
公开日期	2013-09-17
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/35157]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Wei, H,Xu, HX. Controlling surface plasmon interference in branched silver nanowire structures[J]. NANOSCALE,2012,4(22):7149.
APA	Wei, H,&Xu, HX.(2012).Controlling surface plasmon interference in branched silver nanowire structures.NANOSCALE,4(22),7149.
MLA	Wei, H,et al."Controlling surface plasmon interference in branched silver nanowire structures".NANOSCALE 4.22(2012):7149.