Probing the dispersivity of tunable refractive index in the visible range by sensitive localized surface plasmon resonance in flection points in single gold nanorods

被引：0

作者：

Tsalu, Philippe Vuka ^{[1
]}

Moon, Seong Woo ^{[1
]}

Yav, Zephyrin Gushimana ^{[3
]}

Ha, Ji Won ^{[1
,2
]}

机构：

[1] Univ Ulsan, Dept Chem, 93 Daehak Ro, Ulsan 44610, South Korea

[2] Univ Ulsan, Energy Harvest Storage Res Ctr EHSRC, 93 Daehak Ro, Ulsan, South Korea

[3] Univ Kinshasa, Dept Chem, Struct & Phys Chem SPS Lab, Kinshasa 190, Kinshasa, DEM REP CONGO

来源：

CHEMICAL PHYSICS LETTERS | 2020年 / 749卷

基金：

新加坡国家研究基金会;

关键词：

Gold nanostars; Defocused imaging; Single particle spectroscopy; Localized surface plasmon resonance; Spatial orientation; NANOPARTICLES; PHOTOCATALYSIS;

D O I：

10.1016/j.cplett.2020.137416

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Herein, under the quasi-static regime, we used localized surface plasmon resonance (LSPR) inflection points (IFs) of single gold nanorods (AuNRs) to get insightful view in their fundamental role in revealing the dispersivity and tunability of the complex refractive index (RI) of AuNRs. AuNRs exhibited broad-band RIs in the visible range with maxima near the resonance energies, and these broad-bands are even stable at long wavelengths with RIs below 1 RI unit. Furthermore, the low energy IFs with low sensitivities are associated with the highest RI (n) values, whereas the high energy IFs exhibit the highest optical extinction (k).

引用

页数：7

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