Journal
NANO RESEARCH
Volume 3, Issue 11, Pages 807-812Publisher
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-010-0048-y
Keywords
Plasmonic structure; metal-capped colloidal spheres; elastomeric substrate; tunable surface plasmon resonance
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Funding
- National Program on Key Basic Research Project [2007CB613200, 2006CB921700]
- National Natural Science Foundation of China (NSFC)
- Shanghai Science and Technology Commission
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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.
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