Temperature dynamics of laser irradiated gold nanoparticles embedded in a polymer matrix

A.M.M. Gherman, N. Tosa, D.N. Dadarlat, V. Tosa, M.V. Cristea, P.S. Agachi

Research output: Contribution to journalArticle

Abstract

In this work the temperature evolution, in time and space, in two systems that consist of a single gold nanoparticle and an ensemble of gold nanoparticles, both embedded in a polystyrene sulfonic acid matrix, is numerically modeled. The heat accumulated by the gold nanoparticles is estimated considering the system irradiation with a nanosecond laser at 532 nm. The distribution of the temperature in time and space is calculated by solving the heat diffusion equations with appropriate initial and boundary conditions. The rise of nanoparticle size determined the temperature increase of the gold nanoparticle and implicitly of the entire system but also the increase of the necessary time for reaching the thermal equilibrium of the system related to the surrounding polymer volume. The temperature evolution and the dynamics of the system towards reaching the thermal equilibrium are influenced by the gold nanoparticles distribution in the polymer matrix.
Original languageEnglish
Pages (from-to)25-31
Number of pages7
JournalThermochimica Acta
Volume656
DOIs
Publication statusPublished - 2017

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Polymer matrix
Gold
gold
Nanoparticles
nanoparticles
Lasers
polymers
matrices
lasers
Temperature
temperature
heat
sulfonic acid
Polystyrenes
polystyrene
Polymers
Boundary conditions
Irradiation
boundary conditions
irradiation

Cite this

Gherman, A.M.M. ; Tosa, N. ; Dadarlat, D.N. ; Tosa, V. ; Cristea, M.V. ; Agachi, P.S. / Temperature dynamics of laser irradiated gold nanoparticles embedded in a polymer matrix. In: Thermochimica Acta. 2017 ; Vol. 656. pp. 25-31.
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Temperature dynamics of laser irradiated gold nanoparticles embedded in a polymer matrix. / Gherman, A.M.M.; Tosa, N.; Dadarlat, D.N.; Tosa, V.; Cristea, M.V.; Agachi, P.S.

In: Thermochimica Acta, Vol. 656, 2017, p. 25-31.

Research output: Contribution to journalArticle

TY - JOUR

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AU - Gherman, A.M.M.

AU - Tosa, N.

AU - Dadarlat, D.N.

AU - Tosa, V.

AU - Cristea, M.V.

AU - Agachi, P.S.

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AB - In this work the temperature evolution, in time and space, in two systems that consist of a single gold nanoparticle and an ensemble of gold nanoparticles, both embedded in a polystyrene sulfonic acid matrix, is numerically modeled. The heat accumulated by the gold nanoparticles is estimated considering the system irradiation with a nanosecond laser at 532 nm. The distribution of the temperature in time and space is calculated by solving the heat diffusion equations with appropriate initial and boundary conditions. The rise of nanoparticle size determined the temperature increase of the gold nanoparticle and implicitly of the entire system but also the increase of the necessary time for reaching the thermal equilibrium of the system related to the surrounding polymer volume. The temperature evolution and the dynamics of the system towards reaching the thermal equilibrium are influenced by the gold nanoparticles distribution in the polymer matrix.

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