Highly Sensitive and Selective Nanogap-Enhanced SERS Sensing Platform
This 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 rat...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-04-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/9/4/619 |
| _version_ | 1828857049739427840 |
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| author | ChaeWon Mun Vo Thi Nhat Linh Jung-Dae Kwon Ho Sang Jung Dong-Ho Kim Sung-Gyu Park |
| author_facet | ChaeWon Mun Vo Thi Nhat Linh Jung-Dae Kwon Ho Sang Jung Dong-Ho Kim Sung-Gyu Park |
| author_sort | ChaeWon Mun |
| collection | DOAJ |
| description | This 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 × 10<sup>7</sup>. 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. |
| first_indexed | 2024-12-13T01:28:09Z |
| format | Article |
| id | doaj.art-3e90542fd59647f1b386a47fac178213 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-12-13T01:28:09Z |
| publishDate | 2019-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-3e90542fd59647f1b386a47fac1782132022-12-22T00:04:04ZengMDPI AGNanomaterials2079-49912019-04-019461910.3390/nano9040619nano9040619Highly Sensitive and Selective Nanogap-Enhanced SERS Sensing PlatformChaeWon Mun0Vo Thi Nhat Linh1Jung-Dae Kwon2Ho Sang Jung3Dong-Ho Kim4Sung-Gyu Park5Advanced Nano-Surface Department (ANSD), Korea Institute of Materials Science (KIMS), Changwon 51508, KoreaAdvanced Nano-Surface Department (ANSD), Korea Institute of Materials Science (KIMS), Changwon 51508, KoreaAdvanced Nano-Surface Department (ANSD), Korea Institute of Materials Science (KIMS), Changwon 51508, KoreaAdvanced Nano-Surface Department (ANSD), Korea Institute of Materials Science (KIMS), Changwon 51508, KoreaAdvanced Nano-Surface Department (ANSD), Korea Institute of Materials Science (KIMS), Changwon 51508, KoreaAdvanced Nano-Surface Department (ANSD), Korea Institute of Materials Science (KIMS), Changwon 51508, KoreaThis 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 × 10<sup>7</sup>. 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.https://www.mdpi.com/2079-4991/9/4/619hotspotslocalized surface plasmon resonancemolecular filtrationsurface-enhanced Raman spectroscopysensors |
| spellingShingle | ChaeWon Mun Vo Thi Nhat Linh Jung-Dae Kwon Ho Sang Jung Dong-Ho Kim Sung-Gyu Park Highly Sensitive and Selective Nanogap-Enhanced SERS Sensing Platform Nanomaterials hotspots localized surface plasmon resonance molecular filtration surface-enhanced Raman spectroscopy sensors |
| title | Highly Sensitive and Selective Nanogap-Enhanced SERS Sensing Platform |
| title_full | Highly Sensitive and Selective Nanogap-Enhanced SERS Sensing Platform |
| title_fullStr | Highly Sensitive and Selective Nanogap-Enhanced SERS Sensing Platform |
| title_full_unstemmed | Highly Sensitive and Selective Nanogap-Enhanced SERS Sensing Platform |
| title_short | Highly Sensitive and Selective Nanogap-Enhanced SERS Sensing Platform |
| title_sort | highly sensitive and selective nanogap enhanced sers sensing platform |
| topic | hotspots localized surface plasmon resonance molecular filtration surface-enhanced Raman spectroscopy sensors |
| url | https://www.mdpi.com/2079-4991/9/4/619 |
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