Highly Sensitive and Selective Nanogap-Enhanced SERS Sensing Platform
AbstractThis paper reports a highly sensitive and selective surface-enhanced Raman spectroscopy (SERS) sensing platform. We used a simple fabrication method to generate plasmonic hotspots through a direct maskless plasma etching of a polymer surface and the surface tension-driven assembly of high aspect ratio Ag/polymer nanopillars. These collapsed plasmonic nanopillars produced an enhanced near-field interaction via coupled localized surface plasmon resonance. The high density of the small nanogaps yielded a high plasmonic detection performance, with an average SERS enhancement factor of 1.5 × 107. More importantly, we demonstrated that the encapsulation of plasmonic nanostructures within nanofiltration membranes allowed the selective filtration of small molecules based on the degree of membrane swelling in organic solvents and molecular size. Nanofiltration membrane-encapsulated SERS substrates do not require pretreatments. Therefore, they provide a simple and fast detection of toxic molecules using portable Raman spectroscopy. View Full-Text
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Mun, C.; Linh, V.T.N.; Kwon, J.-D.; Jung, H.S.; Kim, D.-H.; Park, S.-G. Highly Sensitive and Selective Nanogap-Enhanced SERS Sensing Platform. Nanomaterials 2019, 9, 619.
Mun C, Linh VTN, Kwon J-D, Jung HS, Kim D-H, Park S-G. Highly Sensitive and Selective Nanogap-Enhanced SERS Sensing Platform. Nanomaterials. 2019; 9(4):619.Chicago/Turabian Style
Mun, ChaeWon; Linh, Vo T.N.; Kwon, Jung-Dae; Jung, Ho S.; Kim, Dong-Ho; Park, Sung-Gyu. 2019. "Highly Sensitive and Selective Nanogap-Enhanced SERS Sensing Platform." Nanomaterials 9, no. 4: 619.
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