Nanoscale metal pillar arrays on elastomeric substrates for surface-enhanced Raman spectroscopy platform

Title
Nanoscale metal pillar arrays on elastomeric substrates for surface-enhanced Raman spectroscopy platform
Author
박원일
Keywords
Imprint; Hot-embossing; Hydrophobic; SERS
Issue Date
2015-03
Publisher
ELSEVIER SCIENCE BV
Citation
CURRENT APPLIED PHYSICS, v. 15, NO 6, Page. 711-716
Abstract
The nanostructures found in nature sometimes have elaborate, three-dimensional structures that consist of soft and flexible constituents, and which exhibit diverse mechanical and optical functions. Here, we introduce a facile, low-cost and scalable nanofabrication approach based on a hot embossing process that can replicate sub-micron to nanoscale features on elastomeric substrates. We have further developed this technique to achieve polymer/metal heterostructure nanopillar arrays via conformal coating of Au films on polymeric templates. Each nanopillar displays a smooth surface and a constant diameter along the vertical direction. Raman spectroscopy studies revealed that the metallic nanostructures decorated with methylene blue exhibited a dominant Raman peak at 1624 cm(-1) that was enhanced more than 3000 times and seven times relative to bare planar Si and Au-coated planar polystyrene substrates, respectively. These results indicate that our nanopillar array can be exploited as a flexible, large area platform for surface-enhanced Raman spectroscopy. (C) 2015 Elsevier B.V. All rights reserved.
URI
http://www.sciencedirect.com/science/article/pii/S1567173915000966http://hdl.handle.net/20.500.11754/22796
ISSN
1567-1739; 1878-1675
DOI
10.1016/j.cap.2015.03.019
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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