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题名: Dispersive Plasmon Damping in Single Gold Nanorods by Platinum Adsorbates
作者: Xu, PY(徐鹏宇); Lu, XX(卢旭星); Han, S(韩松); Ou, WH; Li, Y(李月); Chen, S; Xue, JF; Ding, YP; Ni, WH(倪卫海)
通讯作者: Ni, WH(倪卫海)
刊名: SMALL
发表日期: 2016
DOI: 10.1002/smll.201600533
卷: 12, 期:36
收录类别: SCI ; EI
文章类型: 期刊论文
部门归属: 纳米研究国际实验室
英文摘要: Surface modifications of plasmonic nanoparticles with metal adsorbates are essential in applications such as plasmonic sensing, plasmon-enhanced photocatalysis, etc., where spectral broadening is usually observed. A single particle study is presented on plasmon damping by adsorption of platinum (Pt) clusters. Single particle dark-field spectroscopy is employed to measure exactly the same gold nanorod before and after the Pt adsorption. The Pt-induced plasmon damping in terms of linewidth increase is found dependent on the resonance wavelength of the measured nanorod, which is dispersive in nature. The measured dispersion generally matches the theoretical prediction, and it basically exhibits a gradual increase with decreasing resonance energy. This increase can be attributed to the fact that the nanorod as a better resonator is more susceptible to the Pt adsorption than the spherical particles. Moreover, simulated results based on discrete dipole approximation method further indicate that the damping is mainly contributed from the adsorbates on the ends of the nanorod and independent on the type of the metal adsorbed. Knowledge and insights gained in this study can be very important for the design and fabrication of plasmonic heterostructures as functional nanomaterials.
关键词[WOS]: ENHANCED RAMAN-SCATTERING ; AU NANORODS ; AQUEOUS-SOLUTION ; NANOPARTICLES ; HYDROGEN ; RESONANCES ; PARTICLE ; NANOSTRUCTURES ; APPROXIMATION ; TRANSITION
语种: 英语
JCR小类分区: 一区
WOS记录号: WOS:000384684500021
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinano.ac.cn/handle/332007/4614
Appears in Collections:纳米研究国际实验室_倪卫海团队_期刊论文

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Recommended Citation:
Xu, PY,Lu, XX,Han, S,et al. Dispersive Plasmon Damping in Single Gold Nanorods by Platinum Adsorbates[J]. SMALL,2016,12(36).
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