Optically and elastically assembled plasmonic nanoantennae for spatially resolved characterization of chemical composition in soft matter systems using surface enhanced spontaneous and stimulated Raman scattering
We present a method to locally probe spatially varying chemical composition of soft matter systems by use of optically controlled and elastically self-assembled plasmonic nanoantennae. Disc-shaped metal particles with sharp irregular edges are optically trapped, manipulated, and assembled into small...
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Veröffentlicht in: | Journal of Applied Physics 2014-08, Vol.116 (6) |
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creator | Mundoor, Haridas Lee, Taewoo Gann, Derek G. Ackerman, Paul J. Senyuk, Bohdan van de Lagemaat, Jao Smalyukh, Ivan I. |
description | We present a method to locally probe spatially varying chemical composition of soft matter systems by use of optically controlled and elastically self-assembled plasmonic nanoantennae. Disc-shaped metal particles with sharp irregular edges are optically trapped, manipulated, and assembled into small clusters to provide a strong enhancement of the Raman scattering signal coming from the sample regions around and in-between these particles. As the particles are reassembled and spatially translated by computer-controlled laser tweezers, we probe chemical composition as a function of spatial coordinates. This allows us to reliably detect tiny quantities of organic molecules, such as capping ligands present on various nanoparticles, as well as to probe chemical composition of the interior of liquid crystal defect cores that can be filled with, for example, polymer chains. The strong electromagnetic field enhancement of optically manipulated nanoparticles' rough surfaces is demonstrated in different forms of spectroscopy and microscopy, including enhanced spontaneous Raman scattering, coherent anti-Stokes Raman scattering, and stimulated Raman scattering imaging modes. |
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(NREL), Golden, CO (United States)</creatorcontrib><description>We present a method to locally probe spatially varying chemical composition of soft matter systems by use of optically controlled and elastically self-assembled plasmonic nanoantennae. Disc-shaped metal particles with sharp irregular edges are optically trapped, manipulated, and assembled into small clusters to provide a strong enhancement of the Raman scattering signal coming from the sample regions around and in-between these particles. As the particles are reassembled and spatially translated by computer-controlled laser tweezers, we probe chemical composition as a function of spatial coordinates. This allows us to reliably detect tiny quantities of organic molecules, such as capping ligands present on various nanoparticles, as well as to probe chemical composition of the interior of liquid crystal defect cores that can be filled with, for example, polymer chains. 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(NREL), Golden, CO (United States)</creatorcontrib><title>Optically and elastically assembled plasmonic nanoantennae for spatially resolved characterization of chemical composition in soft matter systems using surface enhanced spontaneous and stimulated Raman scattering</title><title>Journal of Applied Physics</title><description>We present a method to locally probe spatially varying chemical composition of soft matter systems by use of optically controlled and elastically self-assembled plasmonic nanoantennae. Disc-shaped metal particles with sharp irregular edges are optically trapped, manipulated, and assembled into small clusters to provide a strong enhancement of the Raman scattering signal coming from the sample regions around and in-between these particles. As the particles are reassembled and spatially translated by computer-controlled laser tweezers, we probe chemical composition as a function of spatial coordinates. This allows us to reliably detect tiny quantities of organic molecules, such as capping ligands present on various nanoparticles, as well as to probe chemical composition of the interior of liquid crystal defect cores that can be filled with, for example, polymer chains. The strong electromagnetic field enhancement of optically manipulated nanoparticles' rough surfaces is demonstrated in different forms of spectroscopy and microscopy, including enhanced spontaneous Raman scattering, coherent anti-Stokes Raman scattering, and stimulated Raman scattering imaging modes.</description><subject>Applied physics</subject><subject>Chemical and Material Sciences</subject><subject>Chemical composition</subject><subject>Coherent scattering</subject><subject>Crystal defects</subject><subject>Electromagnetic fields</subject><subject>Liquid crystals</subject><subject>MATERIALS SCIENCE</subject><subject>Metal particles</subject><subject>Nanoparticles</subject><subject>NANOSCIENCE AND NANOTECHNOLOGY</subject><subject>Organic chemistry</subject><subject>Raman spectra</subject><subject>Self-assembly</subject><issn>0021-8979</issn><issn>1089-7550</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2014</creationdate><recordtype>article</recordtype><recordid>eNo9kc1q3DAURk1podM0i7yBaFddOJVkW5aXJfQPAoHSrMUd6arjYEmurlyYPmceqMpM6EIIfffo8MFtmivBrwVX3Udx3etJTp180ewE11M7DgN_2ew4l6LV0zi9bt4QPXAuhO6mXfN4t5bZwrIcGUTHcAH6_ybCsF_QsbWmIcXZsggxQSwYIyDzKTNaocwnPCOl5U-l7QEy2IJ5_ltnKbLka4bhSctsCmui-ZTPkVHyhQUolWZ0pIKB2EZz_MVoyx4sMowHiLZqaU2xQMS00alq7Rm2BUod_YAA1WVPnvr5bfPKw0J4-XxfNPdfPv-8-dbe3n39fvPptrWdmEqr3KRAogKlwcuhd1Zr1yH3k1bohBhR8RG8k6Lfcyn7veqdH1GD1d65sesumndnb6plDNm5oD3YFCPaYoQYuFBjhd6foTWn3xtSMQ9py7H2MlJINYz1DJX6cKZsTkQZvVnzHCAfjeDmabNGmOfNdv8AEhGdJg</recordid><startdate>20140814</startdate><enddate>20140814</enddate><creator>Mundoor, Haridas</creator><creator>Lee, Taewoo</creator><creator>Gann, Derek G.</creator><creator>Ackerman, Paul J.</creator><creator>Senyuk, Bohdan</creator><creator>van de Lagemaat, Jao</creator><creator>Smalyukh, Ivan I.</creator><general>American Institute of Physics</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>OTOTI</scope></search><sort><creationdate>20140814</creationdate><title>Optically and elastically assembled plasmonic nanoantennae for spatially resolved characterization of chemical composition in soft matter systems using surface enhanced spontaneous and stimulated Raman scattering</title><author>Mundoor, Haridas ; Lee, Taewoo ; Gann, Derek G. ; Ackerman, Paul J. ; Senyuk, Bohdan ; van de Lagemaat, Jao ; Smalyukh, Ivan I.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c319t-6d96a2e6a68af254dc88d3e0f986ed117e607afd214b0224b64df7e8ac8fdd733</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2014</creationdate><topic>Applied physics</topic><topic>Chemical and Material Sciences</topic><topic>Chemical composition</topic><topic>Coherent scattering</topic><topic>Crystal defects</topic><topic>Electromagnetic fields</topic><topic>Liquid crystals</topic><topic>MATERIALS SCIENCE</topic><topic>Metal particles</topic><topic>Nanoparticles</topic><topic>NANOSCIENCE AND NANOTECHNOLOGY</topic><topic>Organic chemistry</topic><topic>Raman spectra</topic><topic>Self-assembly</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Mundoor, Haridas</creatorcontrib><creatorcontrib>Lee, Taewoo</creatorcontrib><creatorcontrib>Gann, Derek G.</creatorcontrib><creatorcontrib>Ackerman, Paul J.</creatorcontrib><creatorcontrib>Senyuk, Bohdan</creatorcontrib><creatorcontrib>van de Lagemaat, Jao</creatorcontrib><creatorcontrib>Smalyukh, Ivan I.</creatorcontrib><creatorcontrib>National Renewable Energy Lab. 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(NREL), Golden, CO (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Optically and elastically assembled plasmonic nanoantennae for spatially resolved characterization of chemical composition in soft matter systems using surface enhanced spontaneous and stimulated Raman scattering</atitle><jtitle>Journal of Applied Physics</jtitle><date>2014-08-14</date><risdate>2014</risdate><volume>116</volume><issue>6</issue><issn>0021-8979</issn><eissn>1089-7550</eissn><abstract>We present a method to locally probe spatially varying chemical composition of soft matter systems by use of optically controlled and elastically self-assembled plasmonic nanoantennae. Disc-shaped metal particles with sharp irregular edges are optically trapped, manipulated, and assembled into small clusters to provide a strong enhancement of the Raman scattering signal coming from the sample regions around and in-between these particles. As the particles are reassembled and spatially translated by computer-controlled laser tweezers, we probe chemical composition as a function of spatial coordinates. This allows us to reliably detect tiny quantities of organic molecules, such as capping ligands present on various nanoparticles, as well as to probe chemical composition of the interior of liquid crystal defect cores that can be filled with, for example, polymer chains. The strong electromagnetic field enhancement of optically manipulated nanoparticles' rough surfaces is demonstrated in different forms of spectroscopy and microscopy, including enhanced spontaneous Raman scattering, coherent anti-Stokes Raman scattering, and stimulated Raman scattering imaging modes.</abstract><cop>Melville</cop><pub>American Institute of Physics</pub><doi>10.1063/1.4892932</doi><oa>free_for_read</oa></addata></record> |
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subjects | Applied physics Chemical and Material Sciences Chemical composition Coherent scattering Crystal defects Electromagnetic fields Liquid crystals MATERIALS SCIENCE Metal particles Nanoparticles NANOSCIENCE AND NANOTECHNOLOGY Organic chemistry Raman spectra Self-assembly |
title | Optically and elastically assembled plasmonic nanoantennae for spatially resolved characterization of chemical composition in soft matter systems using surface enhanced spontaneous and stimulated Raman scattering |
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