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Plasmonic Thermometer Based on Thermotropic Liquid Crystals

Authors :: Tiziana Placido
Maria Lucia Curri
Cesare Umeton
Roberto Comparelli
Roberto Bartolino
Luciano De Sio
Giovanna Palermo
Source :: Molecular crystals and liquid crystals (Phila. Pa. : 2003) 614 (2015): 93–99. doi:10.1080/15421406.2015.1050279, info:cnr-pdr/source/autori:Palermo, Giovanna; De Sio, Luciano; Placido, Tiziana; Comparelli, Roberto; Curri, Maria Lucia; Bartolino, Roberto; Umeton, Cesare/titolo:Plasmonic Thermometer Based on Thermotropic Liquid Crystals/doi:10.1080%2F15421406.2015.1050279/rivista:Molecular crystals and liquid crystals (Phila. Pa. : 2003)/anno:2015/pagina_da:93/pagina_a:99/intervallo_pagine:93–99/volume:614
Publication Year :: 2015
Publisher :: Informa UK Limited, 2015.
Abstract: Localized plasmon resonance (LPR) of noble Metal Nanoparticles (MNPs) opens up a new horizon for nanoscale materials able to convert light into heat, since the strong electric field generated around the MNPs can transform them into original heat nanosources. Thus, investigation of the heat transport mechanism, from the heated MNPs to their surrounding medium, is fundamental for realizing applications in nanotechnology and thermal-based therapies, and a challenge is definitely represented by the possibility of measuring temperature variations at the surface of the MNPs undergoing optical illumination. In this framework, we show that an ingenious combination of characteristics of short pitch liquid crystalline compounds and MNPs has demonstrated effective to provide an advanced tool to monitor nanoscale temperature variations.