Tailoring Plasmonic Properties of Metal-Dielectric Nanocomposite Thin Films

被引：0
|
作者：
Laha, Ranjit [1 ]
机构：
[1] Indian Inst Technol Patna, Dept Phys, Patna 801103, Bihar, India
来源：
61ST DAE-SOLID STATE PHYSICS SYMPOSIUM | 2017年 / 1832卷
关键词：
Localized Surface Plasmon Resonance; Nanocomposite;
D O I：
10.1063/1.4980377
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Tuning of the plasmonic properties of nanocomposite thin films made by embedding metal nanoparticles in dielectric matrices has been investigated theoretically. The working formula for localized surface plasmon resonance (LSPR) position (lambda(LSPR)) was derived to be lambda(LSPR) = lambda(p)root 1+epsilon(d) (K+f/1-f) + chi(1B) with lambda(p), epsilon(d), K, f and chi(1B) being respectively the plasma wavelength of Au, dielectric constant of matrix thin film, shape factor, volume fraction of AuNPs inside the matrix and real part of inter-band susceptibility. Using this formula, LSPR of nanocomposites can be varied by more than 300 mn the visible range. Analysis of the formula concludes that for a given volume fraction, changing shape has the maximum effect on shift in LSPR position
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页数：3
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