Photo-Aligned Nematic Liquid Crystals Enable the Modulation of Thermoplasmonic Heating
We experimentally demonstrate that the plasmonic heat delivered by a single layer of homogeneously distributed gold nanoparticles (AuNPs), immobilized on a glass substrate, can be optically tuned by taking advantage of the properties of an organic layer based on azobenzene and nematic liquid crystal...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-07-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/14/6272 |
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| author | Giovanna Palermo Rossella Grillo Luigia Pezzi Thomas Bürgi Nelson Tabiryan Luciano De Sio Cesare Umeton |
| author_facet | Giovanna Palermo Rossella Grillo Luigia Pezzi Thomas Bürgi Nelson Tabiryan Luciano De Sio Cesare Umeton |
| author_sort | Giovanna Palermo |
| collection | DOAJ |
| description | We experimentally demonstrate that the plasmonic heat delivered by a single layer of homogeneously distributed gold nanoparticles (AuNPs), immobilized on a glass substrate, can be optically tuned by taking advantage of the properties of an organic layer based on azobenzene and nematic liquid crystal (NLC) molecules. The effect, which exploits the dependence of the NLC refractive index value on the molecular director orientation, is realized using the polarization-dependent, light-induced molecular reorientation of a thin film of photo-aligning material that the NLC is in contact with. The reversibility of the optically induced molecular director reorientation of the NLC enables an active modulation of the plasmonic photo-induced heat. |
| first_indexed | 2024-03-10T09:46:33Z |
| format | Article |
| id | doaj.art-02df1306d2ba42478434cef6cb9d6e7b |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T09:46:33Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-02df1306d2ba42478434cef6cb9d6e7b2023-11-22T03:06:57ZengMDPI AGApplied Sciences2076-34172021-07-011114627210.3390/app11146272Photo-Aligned Nematic Liquid Crystals Enable the Modulation of Thermoplasmonic HeatingGiovanna Palermo0Rossella Grillo1Luigia Pezzi2Thomas Bürgi3Nelson Tabiryan4Luciano De Sio5Cesare Umeton6Department of Physics, University of Calabria, Via P. Bucci, 87036 Rende, ItalyDepartment of Physical Chemistry, University of Geneva, 41211 Geneva, SwitzerlandDepartment of Physics, University of Calabria, Via P. Bucci, 87036 Rende, ItalyDepartment of Physical Chemistry, University of Geneva, 41211 Geneva, SwitzerlandBeam Engineering for Advanced Measurements Company, 1300 Lee Road, Orlando, FL 32789, USACNR NANOTEC—Istituto di Nanotecnologia, UOS Cosenza, 87036 Rende, ItalyDepartment of Physics, University of Calabria, Via P. Bucci, 87036 Rende, ItalyWe experimentally demonstrate that the plasmonic heat delivered by a single layer of homogeneously distributed gold nanoparticles (AuNPs), immobilized on a glass substrate, can be optically tuned by taking advantage of the properties of an organic layer based on azobenzene and nematic liquid crystal (NLC) molecules. The effect, which exploits the dependence of the NLC refractive index value on the molecular director orientation, is realized using the polarization-dependent, light-induced molecular reorientation of a thin film of photo-aligning material that the NLC is in contact with. The reversibility of the optically induced molecular director reorientation of the NLC enables an active modulation of the plasmonic photo-induced heat.https://www.mdpi.com/2076-3417/11/14/6272thermoplasmonicsmetallic nanoparticlesliquid crystalsreconfigurabilityphoto-aligning materials |
| spellingShingle | Giovanna Palermo Rossella Grillo Luigia Pezzi Thomas Bürgi Nelson Tabiryan Luciano De Sio Cesare Umeton Photo-Aligned Nematic Liquid Crystals Enable the Modulation of Thermoplasmonic Heating Applied Sciences thermoplasmonics metallic nanoparticles liquid crystals reconfigurability photo-aligning materials |
| title | Photo-Aligned Nematic Liquid Crystals Enable the Modulation of Thermoplasmonic Heating |
| title_full | Photo-Aligned Nematic Liquid Crystals Enable the Modulation of Thermoplasmonic Heating |
| title_fullStr | Photo-Aligned Nematic Liquid Crystals Enable the Modulation of Thermoplasmonic Heating |
| title_full_unstemmed | Photo-Aligned Nematic Liquid Crystals Enable the Modulation of Thermoplasmonic Heating |
| title_short | Photo-Aligned Nematic Liquid Crystals Enable the Modulation of Thermoplasmonic Heating |
| title_sort | photo aligned nematic liquid crystals enable the modulation of thermoplasmonic heating |
| topic | thermoplasmonics metallic nanoparticles liquid crystals reconfigurability photo-aligning materials |
| url | https://www.mdpi.com/2076-3417/11/14/6272 |
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