Reversible Tuning of Silver Quantum Dot Monolayers Through the Metal-Insulator Transition
The linear and nonlinear ($\chi^{(2)}$) optical responses of Langmuir monolayers of organically functionalized silver quantum dots were measured as a continuous function of interparticle separation under near-ambient conditions. As the distance between metal surfaces was decreased from 12 to ∼5 angs...
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| Veröffentlicht in: | Science (American Association for the Advancement of Science) 1997-09, Vol.277 (5334), p.1978-1981 |
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| container_end_page | 1981 |
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| container_issue | 5334 |
| container_start_page | 1978 |
| container_title | Science (American Association for the Advancement of Science) |
| container_volume | 277 |
| creator | Collier, C. P. Saykally, R. J. Shiang, J. J. Henrichs, S. E. Heath, J. R. |
| description | The linear and nonlinear ($\chi^{(2)}$) optical responses of Langmuir monolayers of organically functionalized silver quantum dots were measured as a continuous function of interparticle separation under near-ambient conditions. As the distance between metal surfaces was decreased from 12 to ∼5 angstroms, both quantum and classical effects were observed in the optical signals. When the separation was less than 5 angstroms, the optical second-harmonic generation (SHG) response exhibited a sharp discontinuity, and the linear reflectance and absorbance began to resemble those of a thin metallic film, indicating that an insulator-to-metal transition occurred. This transition was reversible. |
| doi_str_mv | 10.1126/science.277.5334.1978 |
| format | Article |
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P. ; Saykally, R. J. ; Shiang, J. J. ; Henrichs, S. E. ; Heath, J. R.</creator><creatorcontrib>Collier, C. P. ; Saykally, R. J. ; Shiang, J. J. ; Henrichs, S. E. ; Heath, J. R.</creatorcontrib><description>The linear and nonlinear ($\chi^{(2)}$) optical responses of Langmuir monolayers of organically functionalized silver quantum dots were measured as a continuous function of interparticle separation under near-ambient conditions. As the distance between metal surfaces was decreased from 12 to ∼5 angstroms, both quantum and classical effects were observed in the optical signals. When the separation was less than 5 angstroms, the optical second-harmonic generation (SHG) response exhibited a sharp discontinuity, and the linear reflectance and absorbance began to resemble those of a thin metallic film, indicating that an insulator-to-metal transition occurred. This transition was reversible.</description><identifier>ISSN: 0036-8075</identifier><identifier>EISSN: 1095-9203</identifier><identifier>DOI: 10.1126/science.277.5334.1978</identifier><identifier>CODEN: SCIEAS</identifier><language>eng</language><publisher>Washington, DC: American Society for the Advancement of Science</publisher><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties ; Electron states and collective excitations in multilayers, quantum wells, mesoscopic, and nanoscale systems ; Electron states and collective excitations in thin films, multilayers, quantum wells, mesoscopic and nanoscale systems ; Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures ; Evidence ; Exact sciences and technology ; Feedback (Response) ; Infrared reflection ; Metal particles ; Monomolecular films ; Nanocrystals ; Optical properties ; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation ; Optical properties of specific thin films ; Optical properties of specific thin films, surfaces, and low-dimensional structures ; Optical reflection ; Physics ; Quantum dots ; Semiconductors ; Silver ; Spectral reflectance ; Wave functions</subject><ispartof>Science (American Association for the Advancement of Science), 1997-09, Vol.277 (5334), p.1978-1981</ispartof><rights>Copyright 1997 American Association for the Advancement of Science</rights><rights>1997 INIST-CNRS</rights><rights>Copyright American Association for the Advancement of Science Sep 26, 1997</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c457t-d249e40f6166bd25326066c8f0c739aed6c1febe1ed48fb4ee103044ee67828c3</citedby><cites>FETCH-LOGICAL-c457t-d249e40f6166bd25326066c8f0c739aed6c1febe1ed48fb4ee103044ee67828c3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/2893890$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/2893890$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>314,776,780,799,2871,2872,27901,27902,57992,58225</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=2844772$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Collier, C. P.</creatorcontrib><creatorcontrib>Saykally, R. J.</creatorcontrib><creatorcontrib>Shiang, J. J.</creatorcontrib><creatorcontrib>Henrichs, S. E.</creatorcontrib><creatorcontrib>Heath, J. R.</creatorcontrib><title>Reversible Tuning of Silver Quantum Dot Monolayers Through the Metal-Insulator Transition</title><title>Science (American Association for the Advancement of Science)</title><description>The linear and nonlinear ($\chi^{(2)}$) optical responses of Langmuir monolayers of organically functionalized silver quantum dots were measured as a continuous function of interparticle separation under near-ambient conditions. As the distance between metal surfaces was decreased from 12 to ∼5 angstroms, both quantum and classical effects were observed in the optical signals. When the separation was less than 5 angstroms, the optical second-harmonic generation (SHG) response exhibited a sharp discontinuity, and the linear reflectance and absorbance began to resemble those of a thin metallic film, indicating that an insulator-to-metal transition occurred. This transition was reversible.</description><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>Electron states and collective excitations in multilayers, quantum wells, mesoscopic, and nanoscale systems</subject><subject>Electron states and collective excitations in thin films, multilayers, quantum wells, mesoscopic and nanoscale systems</subject><subject>Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures</subject><subject>Evidence</subject><subject>Exact sciences and technology</subject><subject>Feedback (Response)</subject><subject>Infrared reflection</subject><subject>Metal particles</subject><subject>Monomolecular films</subject><subject>Nanocrystals</subject><subject>Optical properties</subject><subject>Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation</subject><subject>Optical properties of specific thin films</subject><subject>Optical properties of specific thin films, surfaces, and low-dimensional structures</subject><subject>Optical reflection</subject><subject>Physics</subject><subject>Quantum dots</subject><subject>Semiconductors</subject><subject>Silver</subject><subject>Spectral reflectance</subject><subject>Wave functions</subject><issn>0036-8075</issn><issn>1095-9203</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1997</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>BEC</sourceid><sourceid>BENPR</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNpdkE1rGzEQhkVoIW6Sf9CCKIWc1tHX6uNYkrQNJIQkzqEnIcuzsYwspdJuIf--Mjal9DQw87zDzIPQJ0rmlDJ5UX2A5GHOlJr3nIs5NUofoRklpu8MI_wdmhHCZaeJ6o_Rh1o3hLSZ4TP08xF-Q6lhGQEvphTSC84DfgqxdfHD5NI4bfFVHvFdTjm6t8bixbrk6WWNxzXgOxhd7G5SnaIbc8GL4lINY8jpFL0fXKxwdqgn6Pnb9eLyR3d7__3m8utt50Wvxm7FhAFBBkmlXK5Yz5kkUno9EK-4cbCSng6wBAoroYelAKCEE9GqVJppz0_Q-X7va8m_Jqij3YbqIUaXIE_VKsEFb9-LRn7-j9zkqaR2nGWU98oYbRrU7yFfcq0FBvtawtaVN0uJ3em2B9226bY73Xanu-W-HJa76l0cmgcf6t8w00IoxRr2cY9tatP1z9hwbQj_A11Pi9w</recordid><startdate>19970926</startdate><enddate>19970926</enddate><creator>Collier, C. 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P.</au><au>Saykally, R. J.</au><au>Shiang, J. J.</au><au>Henrichs, S. E.</au><au>Heath, J. R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Reversible Tuning of Silver Quantum Dot Monolayers Through the Metal-Insulator Transition</atitle><jtitle>Science (American Association for the Advancement of Science)</jtitle><date>1997-09-26</date><risdate>1997</risdate><volume>277</volume><issue>5334</issue><spage>1978</spage><epage>1981</epage><pages>1978-1981</pages><issn>0036-8075</issn><eissn>1095-9203</eissn><coden>SCIEAS</coden><abstract>The linear and nonlinear ($\chi^{(2)}$) optical responses of Langmuir monolayers of organically functionalized silver quantum dots were measured as a continuous function of interparticle separation under near-ambient conditions. As the distance between metal surfaces was decreased from 12 to ∼5 angstroms, both quantum and classical effects were observed in the optical signals. When the separation was less than 5 angstroms, the optical second-harmonic generation (SHG) response exhibited a sharp discontinuity, and the linear reflectance and absorbance began to resemble those of a thin metallic film, indicating that an insulator-to-metal transition occurred. This transition was reversible.</abstract><cop>Washington, DC</cop><pub>American Society for the Advancement of Science</pub><doi>10.1126/science.277.5334.1978</doi><tpages>4</tpages></addata></record> |
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| identifier | ISSN: 0036-8075 |
| ispartof | Science (American Association for the Advancement of Science), 1997-09, Vol.277 (5334), p.1978-1981 |
| issn | 0036-8075 1095-9203 |
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| source | American Association for the Advancement of Science; Jstor Complete Legacy |
| subjects | Condensed matter: electronic structure, electrical, magnetic, and optical properties Electron states and collective excitations in multilayers, quantum wells, mesoscopic, and nanoscale systems Electron states and collective excitations in thin films, multilayers, quantum wells, mesoscopic and nanoscale systems Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures Evidence Exact sciences and technology Feedback (Response) Infrared reflection Metal particles Monomolecular films Nanocrystals Optical properties Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Optical properties of specific thin films Optical properties of specific thin films, surfaces, and low-dimensional structures Optical reflection Physics Quantum dots Semiconductors Silver Spectral reflectance Wave functions |
| title | Reversible Tuning of Silver Quantum Dot Monolayers Through the Metal-Insulator Transition |
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