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Viable stretchable plasmonics based on unidirectional nanoprisms

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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 × 3 cm2) 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.

Graphical abstract: Viable stretchable plasmonics based on unidirectional nanoprisms

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Publication details

The article was received on 08 Nov 2017, accepted on 18 Jan 2018 and first published on 19 Jan 2018


Article type: Paper
DOI: 10.1039/C7NR08299A
Citation: Nanoscale, 2018, Advance Article
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    Viable stretchable plasmonics based on unidirectional nanoprisms

    J. Lee, C. Park, K. Chung, J. W. Lim, F. Marques Mota, U. Jeong and D. H. Kim, Nanoscale, 2018, Advance Article , DOI: 10.1039/C7NR08299A

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