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Viable stretchable plasmonics based on unidirectional nanoprisms
- Title
- Viable stretchable plasmonics based on unidirectional nanoprisms
- Authors
- Lee, Ji-Eun; Park, Choojin; Chung, Kyungwha; Lim, Ju Won; Mota, Filipe Marques; Jeong, Unyong; Kim, Dong Ha
- Ewha Authors
- 김동하; Filipe Marques Mota
- SCOPUS Author ID
- 김동하; Filipe Marques Mota
- Issue Date
- 2018
- Journal Title
- NANOSCALE
- ISSN
- 2040-3364
2040-3372
- Citation
- NANOSCALE vol. 10, no. 8, pp. 4105 - 4112
- Publisher
- ROYAL SOC CHEMISTRY
- Indexed
- SCIE; 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
- Appears in Collections:
- 자연과학대학 > 화학·나노과학전공 > Journal papers
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