Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Plasmon focusing in short gold sphere nanochains for surface-enhanced Raman scattering

Not Accessible

Your library or personal account may give you access

Abstract

Power-flow focusing in metal nanostructures is attracting growing attention to design efficient and tunable substrates for surface-enhanced Raman spectroscopy (SERS), and to propose a more reliable alternative to random surfaces for single-molecule sensing. In this paper, finite-difference time-domain simulations were used to explore the near-field amplification features of short chains of gold (Au) nanospheres. Short chains of gold spheres were found to induce stronger field enhancements than infinite chains due to a more efficient trapping and focusing of the incident energy. In addition, interaction with a suitably tuned SiO2/Au double-layer substrate was demonstrated to widen the resonance’s bandwidth, meeting another practical need for SERS.

© 2013 Optical Society of America

Full Article  |  PDF Article
More Like This
Doubly resonant surface-enhanced Raman scattering on gold nanorod decorated inverse opal photonic crystals

Le Dac Tuyen, An Chi Liu, Chia-Chi Huang, Pei-Cheng Tsai, Jian Hung Lin, Chin-Wei Wu, Lai-Kwan Chau, Tzyy Schiuan Yang, Le Quoc Minh, Hung-Chih Kan, and Chia Chen Hsu
Opt. Express 20(28) 29266-29275 (2012)

Surface enhanced Raman scattering substrate with metallic nanogap array fabricated by etching the assembled polystyrene spheres array

Liangping Xia, Zheng Yang, Shaoyun Yin, Wenrui Guo, Shuhong Li, Wanyi Xie, Deping Huang, Qiling Deng, Haofei Shi, Hongliang Cui, and Chunlei Du
Opt. Express 21(9) 11349-11355 (2013)

Three-dimensional multi-walled carbon nanotube arrays coated by gold-sol as a surface-enhanced Raman scattering substrate

Jie Zhang, Tuo Fan, Xiaolei Zhang, Chunhong Lai, and Yong Zhu
Appl. Opt. 53(6) 1159-1165 (2014)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (7)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved