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题名: Circular dichroism from single plasmonic nanostructures with extrinsic chirality
作者: Lu, XX (卢旭星) ; Wu, J (吴坚) ; Zhu, QN (朱倩楠) ; Zhao, JW (赵军伟) ; Wang, QB (王强斌) ; Zhan, L (Zhan, Li) ; Ni, WH (倪卫海)
通讯作者: Ni, WH (倪卫海)
关键词: NANOPARTICLES ; OLIGOMERS ; DIMERS
刊名: NANOSCALE
发表日期: 2014
卷: 6, 期:23, 页:14244-14253
收录类别: SCI
英文摘要:
Circular dichroism (CD) studies on single nanostructures can yield novel 
 
insights into chiroptical physics that are not available from traditional ensemble-
 
based measurements, yet they are challenging because of their weak signals. By 
 
introducing an oblique excitation beam, we demonstrate the observation and 
 
spectroscopic analysis of a prominent plasmonic chiroptical response from a single 
 
v-shaped gold nanorod dimer nanostructure. We show that circular differential 
 
scattering from the obliquely excited gold nanorod dimer yields a characteristic 
 
bisignate peak-dip spectral shape at hybridized energies of the dimer. This 
 
chiroptical response can be ascribed to extrinsic chirality which depends on the 
 
geometry configurations of the chiral arrangement. Due to strong near-field 
 
coupling, the dipole orientations of the hybridized resonance modes can be in favor 
 
of the incident circularly polarized light where a maximum g-factor of similar to 
 
0.4 is observed. Promising applications of this chiroptical arrangement as a key 
 
component can be in electronics, photonics, or metamaterials. 
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.sinano.ac.cn/handle/332007/1832
Appears in Collections:纳米生物医学与安全研究部_王强斌团队_期刊论文
纳米研究国际实验室_倪卫海团队_期刊论文

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Recommended Citation:
Lu, XX ,Wu, J ,Zhu, QN ,et al. Circular dichroism from single plasmonic nanostructures with extrinsic chirality[J]. NANOSCALE,2014,6(23):14244-14253.
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