Self-Assembled Rippling Structure Based on Metal-Elastomer Composite for Tunable Plasmonics

Author

Jiang, Yu-Wei ; Chuang, Fang-Tzu ; Chen, Hung-Hsin ; Lee, Si-Chen

Author_Institution

Grad. Inst. of Electron. Eng., Nat. Taiwan Univ., Taipei, Taiwan

Volume

23

Issue

11

fYear

2011

fDate

6/1/2011 12:00:00 AM

Firstpage

670

Lastpage

672

Abstract

We demonstrate that a periodic metallic wavy-structure can be easily fabricated on elastomeric polydymethylsiloxane (PDMS) substrates. The metallic wavy-structures are self-assembly formed by thermal evaporation of Ag on PDMS without any lithography processes. The size of the PDMS substrate with an aspect ratio (the ratio of length to width) higher than 2 are found to be necessary to self-assemble the one-dimensional metallic wavy-structure. The period of the wavy-structure is controllable by varing the thickness of the deposited silver film. The elastomeric-gratings can excite surface plasmon on Ag/air interfaces; the resonant wavelength can be tuned to a range of 3.5% by applying an external mechanical strain.

Keywords

elastomers; optical polymers; photolithography; plasmonics; elastomeric polydymethylsiloxane; elastomeric-gratings; external mechanical strain; lithography processes; metal-elastomer composite; resonant wavelength; self-assembled rippling structure; surface plasmon; thermal evaporation; tunable plasmonics; Films; Optical device fabrication; Optical surface waves; Plasmons; Reflection; Silver; Substrates; Elastomeric-gratings; polydymethylsiloxane (PDMS); surface plasmon;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2011.2119474

Filename

5720511