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Viable stretchable plasmonics based on unidirectional nanoprisms

Title
Viable stretchable plasmonics based on unidirectional nanoprisms
Authors
Lee, Ji-EunPark, ChoojinChung, KyungwhaLim, Ju WonMota, Filipe MarquesJeong, UnyongKim, Dong Ha
Ewha Authors
김동하Filipe Marques Mota
SCOPUS Author ID
김동하scopus; Filipe Marques Motascopus
Issue Date
2018
Journal Title
NANOSCALE
ISSN
2040-3364JCR Link

2040-3372JCR Link
Citation
NANOSCALE vol. 10, no. 8, pp. 4105 - 4112
Publisher
ROYAL SOC CHEMISTRY
Indexed
SCI; SCIE; SCOPUS WOS scopus
Document Type
Article
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.
DOI
10.1039/c7nr08299a
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자연과학대학 > 화학·나노과학전공 > Journal papers
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