Light-matter interactions in aligned silver nanorod arrays

THIN SOLID FILMS

卷:616

Article

Uddin, Md Aman¹  Pasaogullari, Ugur¹ 

[1] Univ Connecticut, Ctr Clean Energy Engn, Dept Mech Engn, Storrs, CT 06269 USA

关键词: Silver;    Nanorods;    Physical vapor deposition;    Reflectance;    Surface plasmon resonance;    Oblique angle deposition;    Glancing angle deposition;   

DOI  :  10.1016/j.tsf.2016.08.039

来源: Elsevier

【 摘 要 】

This study presents an experimental evaluation of the light-matter interactions in silver nanorod arrays of various lengths fabricated by electron-beam physical vapor deposition. The reflectance of nanorod arrays is found to decrease with increasing nanorod length, reaches to a minimum and then again increases with, increasing length. Since nanorod arrays are subwavelength structures, the decrease in reflectance is primarily due to surface plasmon resonance. At the tip of the nanorods, the light excites the surface plasmons, which propagate along the conductor-dielectric interface. Hence, longer and consequently higher surface area nanorod arrays provide more dielectric-conductor interface for light to couple with the surface plasmons and more surface to scatter resulting in lower reflectance. (C) 2016 Elsevier B.V. All rights reserved.

【 授权许可】

Free