Research Article

Nano Research

, Volume 3, Issue 11, pp 807-812

First online:

Open Access This content is freely available online to anyone, anywhere at any time.

A mechanically tunable plasmonic structure composed of a monolayer array of metal-capped colloidal spheres on an elastomeric substrate

  • Xiaolong ZhuAffiliated withDepartment of Physics, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), and State Key Laboratory of Surface Physics, Fudan University
  • , Lei ShiAffiliated withDepartment of Physics, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), and State Key Laboratory of Surface Physics, Fudan University
  • , Xiaohan LiuAffiliated withDepartment of Physics, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), and State Key Laboratory of Surface Physics, Fudan University Email author 
  • , Jian ZiAffiliated withDepartment of Physics, Key Laboratory of Micro and Nano Photonic Structures (Ministry of Education), and State Key Laboratory of Surface Physics, Fudan University Email author 
  • , Zhenlin WangAffiliated withNational Laboratory of Solid State Microstructures, Nanjing University

Abstract

A highly stretchable plasmonic structure composed of a monolayer array of metal-capped colloidal spheres on an elastomeric substrate has been fabricated using simple and inexpensive self-assembly and transfer-printing techniques. This composite structure supports coupled surface plasmons whose wavelengths are sensitive to the arrangement of the metal-capped colloidal spheres. Upon stretching, the lattice of metal-capped colloidal spheres will be deformed, leading to a large wavelength shift of surface plasmon resonances and simultaneously an obvious color change. This stretchable plasmonic structure offers a promising approach to tune surface plasmon resonances and might be exploited in realizing flexible plasmonic devices with tunability of mechanical strain.

http://static-content.springer.com/image/art%3A10.1007%2Fs12274-010-0048-y/MediaObjects/12274_2010_48_Fig1_HTML.jpg

Keywords

Plasmonic structure metal-capped colloidal spheres elastomeric substrate tunable surface plasmon resonance