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Colloidal Photonic Crystals Doped with Gold Nanoparticles: Spectroscopy and Optical Switching Properties
Polystyrene artificial opals with few gold nanoparticles (AuNp) embedded in the interstices (doping) are grown by using the meniscus technique starting from a mixed suspension of microspheres and AuNp. Samples having different sphere diameters and nanoparticle loads have been prepared. Their reflect...
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| Published in: | Advanced functional materials 2007-10, Vol.17 (15), p.2779-2786 |
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| Main Authors: | , , , , |
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| Language: | English |
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| cites | cdi_FETCH-LOGICAL-c3584-76767c19b9b2e6f4c655682f14824a51c1932ceaf2d36468f0739f47287aa4683 |
| container_end_page | 2786 |
| container_issue | 15 |
| container_start_page | 2779 |
| container_title | Advanced functional materials |
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| creator | Morandi, V. Marabelli, F. Amendola, V. Meneghetti, M. Comoretto, D. |
| description | Polystyrene artificial opals with few gold nanoparticles (AuNp) embedded in the interstices (doping) are grown by using the meniscus technique starting from a mixed suspension of microspheres and AuNp. Samples having different sphere diameters and nanoparticle loads have been prepared. Their reflectance spectra clearly show a dramatic bathochromic shift of the photonic stop band (up to 1400 cm–1) and a reduction of its full width half maximum, due to an increase of the effective refractive index of about 8 % with respect to bare opals, which is accounted for by analytical theoretical models. Reflectance spectra do not show any direct evidence of AuNp absorption even at the higher AuNp doping level. Nanosecond transient absorption measurements on these systems indicate that a variation of transmission (optical switching) of about 150 % is observed for AuNp doped opals upon photoexcitation with 9 ns laser pulses at 532 nm. No switching is instead observed for bare opals.
Opals doped with gold nanoparticles are grown and characterized by electron microscopy and optical spectroscopy. Their optical switching properties are investigated in the ns time domain. A variation of transmission upon photoexcitation of about 150% at the stop‐band is observed. |
| doi_str_mv | 10.1002/adfm.200600764 |
| format | article |
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Opals doped with gold nanoparticles are grown and characterized by electron microscopy and optical spectroscopy. Their optical switching properties are investigated in the ns time domain. A variation of transmission upon photoexcitation of about 150% at the stop‐band is observed.</description><identifier>ISSN: 1616-301X</identifier><identifier>EISSN: 1616-3028</identifier><identifier>DOI: 10.1002/adfm.200600764</identifier><language>eng</language><publisher>Weinheim: WILEY-VCH Verlag</publisher><subject>Gold ; Nanoparticles ; Optical switches ; Photonic crystals</subject><ispartof>Advanced functional materials, 2007-10, Vol.17 (15), p.2779-2786</ispartof><rights>Copyright © 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3584-76767c19b9b2e6f4c655682f14824a51c1932ceaf2d36468f0739f47287aa4683</citedby><cites>FETCH-LOGICAL-c3584-76767c19b9b2e6f4c655682f14824a51c1932ceaf2d36468f0739f47287aa4683</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>315,783,787,27936,27937</link.rule.ids></links><search><creatorcontrib>Morandi, V.</creatorcontrib><creatorcontrib>Marabelli, F.</creatorcontrib><creatorcontrib>Amendola, V.</creatorcontrib><creatorcontrib>Meneghetti, M.</creatorcontrib><creatorcontrib>Comoretto, D.</creatorcontrib><title>Colloidal Photonic Crystals Doped with Gold Nanoparticles: Spectroscopy and Optical Switching Properties</title><title>Advanced functional materials</title><addtitle>Adv. Funct. Mater</addtitle><description>Polystyrene artificial opals with few gold nanoparticles (AuNp) embedded in the interstices (doping) are grown by using the meniscus technique starting from a mixed suspension of microspheres and AuNp. Samples having different sphere diameters and nanoparticle loads have been prepared. Their reflectance spectra clearly show a dramatic bathochromic shift of the photonic stop band (up to 1400 cm–1) and a reduction of its full width half maximum, due to an increase of the effective refractive index of about 8 % with respect to bare opals, which is accounted for by analytical theoretical models. Reflectance spectra do not show any direct evidence of AuNp absorption even at the higher AuNp doping level. Nanosecond transient absorption measurements on these systems indicate that a variation of transmission (optical switching) of about 150 % is observed for AuNp doped opals upon photoexcitation with 9 ns laser pulses at 532 nm. No switching is instead observed for bare opals.
Opals doped with gold nanoparticles are grown and characterized by electron microscopy and optical spectroscopy. Their optical switching properties are investigated in the ns time domain. A variation of transmission upon photoexcitation of about 150% at the stop‐band is observed.</description><subject>Gold</subject><subject>Nanoparticles</subject><subject>Optical switches</subject><subject>Photonic crystals</subject><issn>1616-301X</issn><issn>1616-3028</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2007</creationdate><recordtype>article</recordtype><recordid>eNqFkL1PwzAQxSMEElBYmT2xpfgrdsJWpbSASqnEp1gs4zjE4MbBDoL-9xgVVWzohrvTvd-T7iXJEYJDBCE-kVW9HGIIGYSc0a1kDzHEUgJxvr2Z0eNush_CK4SIc0L3kqZ01jpTSQsWjetdaxQo_Sr00gYwdp2uwKfpGzB1tgJz2bpO-t4oq8MpuOm06r0LynUrINsKXHfxFJ1uIqIa076AhY8WEdDhINmpo6c-_O2D5G5ydluep7Pr6UU5mqWKZDlNOYulUPFcPGPNaqpYlrEc14jmmMoMxRPBSssaV4RRlteQk6KmHOdcyriTQXK89u28e__QoRdLE5S2VrbafQRBYEEYhzQKh2uhii8Er2vRebOUfiUQFD-Bip9AxSbQCBRr4NNYvfpHLUbjydVfNl2zJvT6a8NK_yYYJzwTD_OpyGdPD4-X97ng5Bui2YoG</recordid><startdate>20071015</startdate><enddate>20071015</enddate><creator>Morandi, V.</creator><creator>Marabelli, F.</creator><creator>Amendola, V.</creator><creator>Meneghetti, M.</creator><creator>Comoretto, D.</creator><general>WILEY-VCH Verlag</general><general>WILEY‐VCH Verlag</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20071015</creationdate><title>Colloidal Photonic Crystals Doped with Gold Nanoparticles: Spectroscopy and Optical Switching Properties</title><author>Morandi, V. ; Marabelli, F. ; Amendola, V. ; Meneghetti, M. ; Comoretto, D.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3584-76767c19b9b2e6f4c655682f14824a51c1932ceaf2d36468f0739f47287aa4683</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2007</creationdate><topic>Gold</topic><topic>Nanoparticles</topic><topic>Optical switches</topic><topic>Photonic crystals</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Morandi, V.</creatorcontrib><creatorcontrib>Marabelli, F.</creatorcontrib><creatorcontrib>Amendola, V.</creatorcontrib><creatorcontrib>Meneghetti, M.</creatorcontrib><creatorcontrib>Comoretto, D.</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Advanced functional materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Morandi, V.</au><au>Marabelli, F.</au><au>Amendola, V.</au><au>Meneghetti, M.</au><au>Comoretto, D.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Colloidal Photonic Crystals Doped with Gold Nanoparticles: Spectroscopy and Optical Switching Properties</atitle><jtitle>Advanced functional materials</jtitle><addtitle>Adv. Funct. Mater</addtitle><date>2007-10-15</date><risdate>2007</risdate><volume>17</volume><issue>15</issue><spage>2779</spage><epage>2786</epage><pages>2779-2786</pages><issn>1616-301X</issn><eissn>1616-3028</eissn><abstract>Polystyrene artificial opals with few gold nanoparticles (AuNp) embedded in the interstices (doping) are grown by using the meniscus technique starting from a mixed suspension of microspheres and AuNp. Samples having different sphere diameters and nanoparticle loads have been prepared. Their reflectance spectra clearly show a dramatic bathochromic shift of the photonic stop band (up to 1400 cm–1) and a reduction of its full width half maximum, due to an increase of the effective refractive index of about 8 % with respect to bare opals, which is accounted for by analytical theoretical models. Reflectance spectra do not show any direct evidence of AuNp absorption even at the higher AuNp doping level. Nanosecond transient absorption measurements on these systems indicate that a variation of transmission (optical switching) of about 150 % is observed for AuNp doped opals upon photoexcitation with 9 ns laser pulses at 532 nm. No switching is instead observed for bare opals.
Opals doped with gold nanoparticles are grown and characterized by electron microscopy and optical spectroscopy. Their optical switching properties are investigated in the ns time domain. A variation of transmission upon photoexcitation of about 150% at the stop‐band is observed.</abstract><cop>Weinheim</cop><pub>WILEY-VCH Verlag</pub><doi>10.1002/adfm.200600764</doi><tpages>8</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1616-301X |
| ispartof | Advanced functional materials, 2007-10, Vol.17 (15), p.2779-2786 |
| issn | 1616-301X 1616-3028 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_30936704 |
| source | Wiley-Blackwell Read & Publish Collection |
| subjects | Gold Nanoparticles Optical switches Photonic crystals |
| title | Colloidal Photonic Crystals Doped with Gold Nanoparticles: Spectroscopy and Optical Switching Properties |
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