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Crystals 2017, 7(1), 14; doi:10.3390/cryst7010014

Photo-Thermal Effects in 1D Gratings of Gold Nanoparticles

1
Dipartimento di Fisica, Università della Calabria, Ponte Pietro Bucci Cubo 31/C, 87036 Rende (CS), Italy
2
Consiglio Nazionale delle Ricerche, Istituto di Nanotecnologia, Nanotec, SS di Cosenza, Ponte Pietro Bucci Cubo 31/C, 87036 Rende (CS), Italy
*
Authors to whom correspondence should be addressed.
Academic Editor: Johan Wouters
Received: 14 December 2016 / Revised: 3 January 2017 / Accepted: 4 January 2017 / Published: 6 January 2017
(This article belongs to the Special Issue Thermo- and Photochromic Molecular Crystals)
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Abstract

This work investigates the heat delivered by a mono-layer 1D grating of gold nanoparticles (GNPs) created by photo-reduction through two-photon direct laser writing (2P-DLW) in a poly-vinyl alcohol (PVA) matrix doped with HAuCl4, under resonant laser radiation. We drop cast a film of a PVA + HAuCl4 mixture onto a glass substrate, in which we create gratings of 1 mm2 made by stripes of GNPs characterized by high polydispersivity. We demonstrate that, by controlling the pitch of the GNP stripes, we obtain different values of the photo-induced temperature variations. In the framework of thermo-plasmonics, the experimental investigation of the heat generation from a monolayer of gold nanoparticles represents a key element as a starting point to design thermo-smart platforms for sensing, solar energy harvesting and thermo-catalysis. View Full-Text
Keywords: thermo-plasmonics; gold nanoparticles; heat thermo-plasmonics; gold nanoparticles; heat
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Palermo, G.; Ritacco, T.; Aceti, D.M.; Pezzi, L.; Giocondo, M.; De Luca, A. Photo-Thermal Effects in 1D Gratings of Gold Nanoparticles. Crystals 2017, 7, 14.

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