Spatial-Tunable Au Nanoparticle Functionalized Si Nanorods Arrays for Surface Enhanced Raman Spectroscopy
In this study, hexagonal-packed Si nanorods (SiNRs) arrays were fabricated and conjugated with Au nanoparticles (AuNPs) in different spatial distributions for surface-enhanced Raman spectroscopy (SERS). The AuNPs were functionalized on the bottom of SiNRs (B-SiNRs@AuNPs), top of SiNRs (T-SiNRs@AuNPs...
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| Veröffentlicht in: | Nanomaterials (Basel, Switzerland) Switzerland), 2020-07, Vol.10 (7), p.1317, Article 1317 |
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| creator | Lin, Dongdong Dai, Kunjie Yu, Tianxiang Zhao, Wenhui Xu, Wenwu |
| description | In this study, hexagonal-packed Si nanorods (SiNRs) arrays were fabricated and conjugated with Au nanoparticles (AuNPs) in different spatial distributions for surface-enhanced Raman spectroscopy (SERS). The AuNPs were functionalized on the bottom of SiNRs (B-SiNRs@AuNPs), top of SiNRs (T-SiNRs@AuNPs) and sides of SiNRs (S-SiNRs@AuNPs), respectively. Our results demonstrated that the SiNRs conjugated with AuNPs on the sides achieved high reproducibility in detection of R6G molecules, while the AuNPs on the top of the SiNRs obtained the strongest Raman enhancement. In addition, the substrate with S-SiNRs@AuNPs obtained the highest spatial uniformity of enhancement. The finite-difference time-domain simulation gave further evidence that the incident light could be confined in the space of SiNRs arrays and yield a zero-gap enhancement coupled with the AuNPs. Our study provided a spatially tunable SiNRs@AuNPs substrate with high sensitivity and reproducibility in molecular detection. |
| doi_str_mv | 10.3390/nano10071317 |
| format | Article |
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The AuNPs were functionalized on the bottom of SiNRs (B-SiNRs@AuNPs), top of SiNRs (T-SiNRs@AuNPs) and sides of SiNRs (S-SiNRs@AuNPs), respectively. Our results demonstrated that the SiNRs conjugated with AuNPs on the sides achieved high reproducibility in detection of R6G molecules, while the AuNPs on the top of the SiNRs obtained the strongest Raman enhancement. In addition, the substrate with S-SiNRs@AuNPs obtained the highest spatial uniformity of enhancement. The finite-difference time-domain simulation gave further evidence that the incident light could be confined in the space of SiNRs arrays and yield a zero-gap enhancement coupled with the AuNPs. Our study provided a spatially tunable SiNRs@AuNPs substrate with high sensitivity and reproducibility in molecular detection.</description><identifier>ISSN: 2079-4991</identifier><identifier>EISSN: 2079-4991</identifier><identifier>DOI: 10.3390/nano10071317</identifier><identifier>PMID: 32635490</identifier><language>eng</language><publisher>BASEL: Mdpi</publisher><subject>Arrays ; Au nanoparticles ; Chemistry ; Chemistry, Multidisciplinary ; detection ; Electric fields ; Etching ; Finite difference time domain method ; Gold ; Incident light ; Lasers ; Light ; Materials Science ; Materials Science, Multidisciplinary ; Nanoparticles ; Nanorods ; Nanoscience & Nanotechnology ; Nanowires ; Physical Sciences ; Physics ; Physics, Applied ; Raman spectroscopy ; Reproducibility ; Science & Technology ; Science & Technology - Other Topics ; SERS ; Si nanorods ; Spatial distribution ; Spectroscopy ; Substrates ; surface plasmon resonance ; Technology</subject><ispartof>Nanomaterials (Basel, Switzerland), 2020-07, Vol.10 (7), p.1317, Article 1317</ispartof><rights>2020. This work is licensed under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><rights>2020 by the authors. 2020</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>true</woscitedreferencessubscribed><woscitedreferencescount>5</woscitedreferencescount><woscitedreferencesoriginalsourcerecordid>wos000554237800001</woscitedreferencesoriginalsourcerecordid><citedby>FETCH-LOGICAL-c455t-4c389ca3ea13ce9427f95a53fa31c3ec50f00bc8e059432c643ae198dbe09a8c3</citedby><cites>FETCH-LOGICAL-c455t-4c389ca3ea13ce9427f95a53fa31c3ec50f00bc8e059432c643ae198dbe09a8c3</cites><orcidid>0000-0002-5538-8706</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC7407171/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC7407171/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,315,729,782,786,866,887,2104,2116,27931,27932,28255,53798,53800</link.rule.ids></links><search><creatorcontrib>Lin, Dongdong</creatorcontrib><creatorcontrib>Dai, Kunjie</creatorcontrib><creatorcontrib>Yu, Tianxiang</creatorcontrib><creatorcontrib>Zhao, Wenhui</creatorcontrib><creatorcontrib>Xu, Wenwu</creatorcontrib><title>Spatial-Tunable Au Nanoparticle Functionalized Si Nanorods Arrays for Surface Enhanced Raman Spectroscopy</title><title>Nanomaterials (Basel, Switzerland)</title><addtitle>NANOMATERIALS-BASEL</addtitle><description>In this study, hexagonal-packed Si nanorods (SiNRs) arrays were fabricated and conjugated with Au nanoparticles (AuNPs) in different spatial distributions for surface-enhanced Raman spectroscopy (SERS). The AuNPs were functionalized on the bottom of SiNRs (B-SiNRs@AuNPs), top of SiNRs (T-SiNRs@AuNPs) and sides of SiNRs (S-SiNRs@AuNPs), respectively. Our results demonstrated that the SiNRs conjugated with AuNPs on the sides achieved high reproducibility in detection of R6G molecules, while the AuNPs on the top of the SiNRs obtained the strongest Raman enhancement. In addition, the substrate with S-SiNRs@AuNPs obtained the highest spatial uniformity of enhancement. The finite-difference time-domain simulation gave further evidence that the incident light could be confined in the space of SiNRs arrays and yield a zero-gap enhancement coupled with the AuNPs. Our study provided a spatially tunable SiNRs@AuNPs substrate with high sensitivity and reproducibility in molecular detection.</description><subject>Arrays</subject><subject>Au nanoparticles</subject><subject>Chemistry</subject><subject>Chemistry, Multidisciplinary</subject><subject>detection</subject><subject>Electric fields</subject><subject>Etching</subject><subject>Finite difference time domain method</subject><subject>Gold</subject><subject>Incident light</subject><subject>Lasers</subject><subject>Light</subject><subject>Materials Science</subject><subject>Materials Science, Multidisciplinary</subject><subject>Nanoparticles</subject><subject>Nanorods</subject><subject>Nanoscience & Nanotechnology</subject><subject>Nanowires</subject><subject>Physical Sciences</subject><subject>Physics</subject><subject>Physics, Applied</subject><subject>Raman spectroscopy</subject><subject>Reproducibility</subject><subject>Science & Technology</subject><subject>Science & Technology - Other Topics</subject><subject>SERS</subject><subject>Si nanorods</subject><subject>Spatial distribution</subject><subject>Spectroscopy</subject><subject>Substrates</subject><subject>surface plasmon resonance</subject><subject>Technology</subject><issn>2079-4991</issn><issn>2079-4991</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><sourceid>AOWDO</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>DOA</sourceid><recordid>eNqNkktv1DAUhSMEotXQHT8gEhskGPAziTdIo1FbKlUgMWVt3TjXrUcZO9gJaPj19TSjqmWFN35998i-5xTFW0o-ca7IZw8-UEJqymn9ojhlpFZLoRR9-WR9UpyltCV5KMobyV8XJ5xVXApFTgu3GWB00C9vJg9tj-VqKr9l0QHi6EzeX0zejC546N1f7MqNe7iOoUvlKkbYp9KGWG6maMFgee7vwJvM_YAd-HIzoBljSCYM-zfFKwt9wrPjvCh-XpzfrL8ur79fXq1X10sjpByXwvBGGeAIlBtUgtVWSZDcAqeGo5HEEtKaBolUgjNTCQ5IVdO1SBQ0hi-Kq1m3C7DVQ3Q7iHsdwOmHgxBv9fFvGmgrsVKWMSuFrFjbWEEsgiAtE6iqrPVl1hqmdoedQT9G6J-JPr_x7k7fht-6FtmT7MqieH8UiOHXhGnUO5cM9j14DFPSTDAqKlJxktF3_6DbMMXc95liVc0Uy9THmTK5rSmifXwMJfoQCf00EhlvZvwPtsEm4zC781iSIyGlYLxuDumgazfCwep1mPyYSz_8fym_BzzNyZU</recordid><startdate>20200704</startdate><enddate>20200704</enddate><creator>Lin, Dongdong</creator><creator>Dai, Kunjie</creator><creator>Yu, Tianxiang</creator><creator>Zhao, Wenhui</creator><creator>Xu, Wenwu</creator><general>Mdpi</general><general>MDPI AG</general><general>MDPI</general><scope>AOWDO</scope><scope>BLEPL</scope><scope>DTL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7QO</scope><scope>7QQ</scope><scope>7SC</scope><scope>7SE</scope><scope>7SP</scope><scope>7SR</scope><scope>7TA</scope><scope>7TB</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FH</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BBNVY</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>F28</scope><scope>FR3</scope><scope>GNUQQ</scope><scope>H8D</scope><scope>H8G</scope><scope>HCIFZ</scope><scope>JG9</scope><scope>JQ2</scope><scope>KB.</scope><scope>KR7</scope><scope>L7M</scope><scope>LK8</scope><scope>L~C</scope><scope>L~D</scope><scope>M7P</scope><scope>P64</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>7X8</scope><scope>5PM</scope><scope>DOA</scope><orcidid>https://orcid.org/0000-0002-5538-8706</orcidid></search><sort><creationdate>20200704</creationdate><title>Spatial-Tunable Au Nanoparticle Functionalized Si Nanorods Arrays for Surface Enhanced Raman Spectroscopy</title><author>Lin, Dongdong ; Dai, Kunjie ; Yu, Tianxiang ; Zhao, Wenhui ; Xu, Wenwu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c455t-4c389ca3ea13ce9427f95a53fa31c3ec50f00bc8e059432c643ae198dbe09a8c3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Arrays</topic><topic>Au nanoparticles</topic><topic>Chemistry</topic><topic>Chemistry, Multidisciplinary</topic><topic>detection</topic><topic>Electric fields</topic><topic>Etching</topic><topic>Finite difference time domain method</topic><topic>Gold</topic><topic>Incident light</topic><topic>Lasers</topic><topic>Light</topic><topic>Materials Science</topic><topic>Materials Science, Multidisciplinary</topic><topic>Nanoparticles</topic><topic>Nanorods</topic><topic>Nanoscience & Nanotechnology</topic><topic>Nanowires</topic><topic>Physical Sciences</topic><topic>Physics</topic><topic>Physics, Applied</topic><topic>Raman spectroscopy</topic><topic>Reproducibility</topic><topic>Science & Technology</topic><topic>Science & Technology - 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Academic</collection><collection>PubMed Central (Full Participant titles)</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>Nanomaterials (Basel, Switzerland)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lin, Dongdong</au><au>Dai, Kunjie</au><au>Yu, Tianxiang</au><au>Zhao, Wenhui</au><au>Xu, Wenwu</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Spatial-Tunable Au Nanoparticle Functionalized Si Nanorods Arrays for Surface Enhanced Raman Spectroscopy</atitle><jtitle>Nanomaterials (Basel, Switzerland)</jtitle><stitle>NANOMATERIALS-BASEL</stitle><date>2020-07-04</date><risdate>2020</risdate><volume>10</volume><issue>7</issue><spage>1317</spage><pages>1317-</pages><artnum>1317</artnum><issn>2079-4991</issn><eissn>2079-4991</eissn><abstract>In this study, hexagonal-packed Si nanorods (SiNRs) arrays were fabricated and conjugated with Au nanoparticles (AuNPs) in different spatial distributions for surface-enhanced Raman spectroscopy (SERS). The AuNPs were functionalized on the bottom of SiNRs (B-SiNRs@AuNPs), top of SiNRs (T-SiNRs@AuNPs) and sides of SiNRs (S-SiNRs@AuNPs), respectively. Our results demonstrated that the SiNRs conjugated with AuNPs on the sides achieved high reproducibility in detection of R6G molecules, while the AuNPs on the top of the SiNRs obtained the strongest Raman enhancement. In addition, the substrate with S-SiNRs@AuNPs obtained the highest spatial uniformity of enhancement. The finite-difference time-domain simulation gave further evidence that the incident light could be confined in the space of SiNRs arrays and yield a zero-gap enhancement coupled with the AuNPs. Our study provided a spatially tunable SiNRs@AuNPs substrate with high sensitivity and reproducibility in molecular detection.</abstract><cop>BASEL</cop><pub>Mdpi</pub><pmid>32635490</pmid><doi>10.3390/nano10071317</doi><tpages>10</tpages><orcidid>https://orcid.org/0000-0002-5538-8706</orcidid><oa>free_for_read</oa></addata></record> |
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| subjects | Arrays Au nanoparticles Chemistry Chemistry, Multidisciplinary detection Electric fields Etching Finite difference time domain method Gold Incident light Lasers Light Materials Science Materials Science, Multidisciplinary Nanoparticles Nanorods Nanoscience & Nanotechnology Nanowires Physical Sciences Physics Physics, Applied Raman spectroscopy Reproducibility Science & Technology Science & Technology - Other Topics SERS Si nanorods Spatial distribution Spectroscopy Substrates surface plasmon resonance Technology |
| title | Spatial-Tunable Au Nanoparticle Functionalized Si Nanorods Arrays for Surface Enhanced Raman Spectroscopy |
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