Light-controlled in situ bidirectional tuning and monitoring of gold nanorod plasmon via oxidative etching with FeCl3

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dc.contributor.author Thambi, Varsha
dc.contributor.author Kar, Ashish
dc.contributor.author Ghosh, Piue
dc.contributor.author Khatua, Saumyakanti
dc.date.accessioned 2018-10-20T08:05:51Z
dc.date.available 2018-10-20T08:05:51Z
dc.date.issued 2018-10
dc.identifier.citation Thambi, Varsha; Kar, Ashish; Ghosh, Piue and Khatua, Saumyakanti, "Light-controlled in situ bidirectional tuning and monitoring of gold nanorod plasmon via oxidative etching with FeCl3", The Journal of Physical Chemistry C, DOI: 10.1021/acs.jpcc.8b06679, Oct. 2018. en_US
dc.identifier.issn 1932-7447
dc.identifier.issn 1932-7455
dc.identifier.uri https://doi.org/10.1021/acs.jpcc.8b06679
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/3953
dc.description.abstract We report on light-controlled in situ bidirectional tuning of longitudinal surface plasmon resonance (LSPR) of single gold nanorods via oxidative etching with ferric chloride. By removing the surfactant layer from the surface of a gold nanorod, we demonstrate that the etching happens only in the presence of an excitation laser, and the etching rate and directionality can be controlled by the intensity of excitation light. At a low excitation power, a blue shift of a nanorod’s LSPR of up to 50 nm was observed, which indicates preferential etching from its tips. Whereas at a high power, we see a red shift of the nanorod’s LSPR of up to 140 nm indicating etching from sides. These results present a new approach for in situ finer adjustments of a selected nanorod’s plasmon resonance.
dc.description.statementofresponsibility by Varsha Thambi, Ashish Kar, Piue Ghosh and Saumyakanti Khatua
dc.language.iso en en_US
dc.publisher American Chemical Society (ACS) en_US
dc.subject Situ Bidirectional Tuning en_US
dc.subject Monitoring of Gold Nanorod Plasmon en_US
dc.subject Oxidative Etching with FeCl3 en_US
dc.title Light-controlled in situ bidirectional tuning and monitoring of gold nanorod plasmon via oxidative etching with FeCl3 en_US
dc.type Article en_US
dc.relation.journal Journal of Physical Chemistry C


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