High-density metallic nanogaps fabricated on solid substrates used for surface enhanced Raman scattering
The Raman signal of adsorbed molecules can be significantly enhanced by utilizing metallic structures with high-density Raman hot spots used as surface enhanced Raman scattering (SERS) substrates. In this work, we develop a simple, convenient and tunable method to fabricate high-density Ag or Au nan...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2013
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| Online Access: | https://hdl.handle.net/10356/97560 http://hdl.handle.net/10220/10687 |
| _version_ | 1811690226701041664 |
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| author | Lu, Gang Li, Hai Wu, Shixin Chen, Peng Zhang, Hua |
| author2 | School of Materials Science & Engineering |
| author_facet | School of Materials Science & Engineering Lu, Gang Li, Hai Wu, Shixin Chen, Peng Zhang, Hua |
| author_sort | Lu, Gang |
| collection | NTU |
| description | The Raman signal of adsorbed molecules can be significantly enhanced by utilizing metallic structures with high-density Raman hot spots used as surface enhanced Raman scattering (SERS) substrates. In this work, we develop a simple, convenient and tunable method to fabricate high-density Ag or Au nanogaps on Si wafers. These nanogaps can serve as Raman hot spots, leading to dramatic enhancement of the Raman signal. The high-density nanogaps can be formed by repeating the electroless deposition of Ag NPs (or Au NPs) and coating of p-aminothiophenol (PATP, a Raman probe) on the deposited Ag NPs (or Au NPs) through the self-assembly process. After removal of PATP by O2 plasma, the as-fabricated SERS substrate can be reused for the detection of other molecules. |
| first_indexed | 2024-10-01T06:00:38Z |
| format | Journal Article |
| id | ntu-10356/97560 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:00:38Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/975602020-06-01T10:13:41Z High-density metallic nanogaps fabricated on solid substrates used for surface enhanced Raman scattering Lu, Gang Li, Hai Wu, Shixin Chen, Peng Zhang, Hua School of Materials Science & Engineering Centre for Biomimetic Sensor Science The Raman signal of adsorbed molecules can be significantly enhanced by utilizing metallic structures with high-density Raman hot spots used as surface enhanced Raman scattering (SERS) substrates. In this work, we develop a simple, convenient and tunable method to fabricate high-density Ag or Au nanogaps on Si wafers. These nanogaps can serve as Raman hot spots, leading to dramatic enhancement of the Raman signal. The high-density nanogaps can be formed by repeating the electroless deposition of Ag NPs (or Au NPs) and coating of p-aminothiophenol (PATP, a Raman probe) on the deposited Ag NPs (or Au NPs) through the self-assembly process. After removal of PATP by O2 plasma, the as-fabricated SERS substrate can be reused for the detection of other molecules. 2013-06-26T02:30:48Z 2019-12-06T19:44:04Z 2013-06-26T02:30:48Z 2019-12-06T19:44:04Z 2012 2012 Journal Article Lu, G., Li, H., Wu, S., Chen, P., & Zhang, H. (2012). High-density metallic nanogaps fabricated on solid substrates used for surface enhanced Raman scattering. Nanoscale, 4(3), 860-863. 2040-3364 https://hdl.handle.net/10356/97560 http://hdl.handle.net/10220/10687 10.1039/c1nr10997a en Nanoscale © 2012 The Royal Society of Chemistry. |
| spellingShingle | Lu, Gang Li, Hai Wu, Shixin Chen, Peng Zhang, Hua High-density metallic nanogaps fabricated on solid substrates used for surface enhanced Raman scattering |
| title | High-density metallic nanogaps fabricated on solid substrates used for surface enhanced Raman scattering |
| title_full | High-density metallic nanogaps fabricated on solid substrates used for surface enhanced Raman scattering |
| title_fullStr | High-density metallic nanogaps fabricated on solid substrates used for surface enhanced Raman scattering |
| title_full_unstemmed | High-density metallic nanogaps fabricated on solid substrates used for surface enhanced Raman scattering |
| title_short | High-density metallic nanogaps fabricated on solid substrates used for surface enhanced Raman scattering |
| title_sort | high density metallic nanogaps fabricated on solid substrates used for surface enhanced raman scattering |
| url | https://hdl.handle.net/10356/97560 http://hdl.handle.net/10220/10687 |
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