Viable stretchable plasmonics based on unidirectional nanoprisms
SCIE
SCOPUS
- Title
- Viable stretchable plasmonics based on unidirectional nanoprisms
- Authors
- Ji-Eun Lee; Choojin Park; Kyungwha Chung; Ju Won Lim; Filipe Marques Mota; JEONG, UNYONG; Dong Ha Kim
- Date Issued
- 2018-01
- Publisher
- Royal Society of Chemistry
- Abstract
- Well-defined ordered arrays of plasmonic nanostructures were fabricated on stretchable substrates and tunable plasmon-coupling-based sensing properties were comprehensively demonstrated upon extension and contraction. Regular nanoprism patterns consisting of Ag, Au and Ag/Au bilayers were constructed on the stretchable polydimethylsiloxane substrate. The nanoprisms had the same orientation over the entire substrate (3 x 3 cm(2)) via metal deposition on a single-crystal microparticle monolayer assembly. The plasmonic sensor based on the Ag/Au bilayer showed a 6-fold enhanced surface enhanced Raman scattering signal under 20% uniaxial extension, whereas a 3-fold increase was observed upon 6% contraction, compared with the Au nanoprism arrays. The sensory behaviors were corroborated by finite-difference time-domain simulation, demonstrating the tunable electromagnetic field enhancement effect via the localized surface plasmon resonance coupling. The advanced flexible plasmonic-coupling-based devices with tunable and quantifiable performance herein suggested are expected to unlock promising potential in practical bio-sensing, biotechnological applications and optical devices.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/41185
- DOI
- 10.1039/C7NR08299A
- ISSN
- 2040-3364
- Article Type
- Article
- Citation
- Nanoscale, vol. 10, no. 8, page. 4105 - 4112, 2018-01
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