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Kinetics of laser-induced melting of thin gold film: How slow can it get?
Melting is a common and well-studied phenomenon that still reveals new facets when triggered by laser excitation and probed with ultrafast electron diffraction. Recent experimental evidence of anomalously slow nanosecond-scale melting of thin gold films irradiated by femtosecond laser pulses motivat...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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American Association for the Advancement of Science
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9491712/ https://www.ncbi.nlm.nih.gov/pubmed/36129986 http://dx.doi.org/10.1126/sciadv.abo2621 |
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author | Arefev, Mikhail I. Shugaev, Maxim V. Zhigilei, Leonid V. |
author_facet | Arefev, Mikhail I. Shugaev, Maxim V. Zhigilei, Leonid V. |
author_sort | Arefev, Mikhail I. |
collection | PubMed |
description | Melting is a common and well-studied phenomenon that still reveals new facets when triggered by laser excitation and probed with ultrafast electron diffraction. Recent experimental evidence of anomalously slow nanosecond-scale melting of thin gold films irradiated by femtosecond laser pulses motivates computational efforts aimed at revealing the underlying mechanisms of melting. Atomistic simulations reveal that a combined effect of lattice superheating and relaxation of laser-induced stresses ensures the dominance of the homogeneous melting mechanism at all energies down to the melting threshold and keeps the time scale of melting within ~100 picoseconds. The much longer melting times and the prominent contribution of heterogeneous melting inferred from the experiments cannot be reconciled with the atomistic simulations by any reasonable variation of the electron-phonon coupling strength, thus suggesting the need for further coordinated experimental and theoretical efforts aimed at addressing the mechanisms and kinetics of laser-induced melting in the vicinity of melting threshold. |
format | Online Article Text |
id | pubmed-9491712 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | American Association for the Advancement of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-94917122022-10-03 Kinetics of laser-induced melting of thin gold film: How slow can it get? Arefev, Mikhail I. Shugaev, Maxim V. Zhigilei, Leonid V. Sci Adv Physical and Materials Sciences Melting is a common and well-studied phenomenon that still reveals new facets when triggered by laser excitation and probed with ultrafast electron diffraction. Recent experimental evidence of anomalously slow nanosecond-scale melting of thin gold films irradiated by femtosecond laser pulses motivates computational efforts aimed at revealing the underlying mechanisms of melting. Atomistic simulations reveal that a combined effect of lattice superheating and relaxation of laser-induced stresses ensures the dominance of the homogeneous melting mechanism at all energies down to the melting threshold and keeps the time scale of melting within ~100 picoseconds. The much longer melting times and the prominent contribution of heterogeneous melting inferred from the experiments cannot be reconciled with the atomistic simulations by any reasonable variation of the electron-phonon coupling strength, thus suggesting the need for further coordinated experimental and theoretical efforts aimed at addressing the mechanisms and kinetics of laser-induced melting in the vicinity of melting threshold. American Association for the Advancement of Science 2022-09-21 /pmc/articles/PMC9491712/ /pubmed/36129986 http://dx.doi.org/10.1126/sciadv.abo2621 Text en Copyright © 2022 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY). https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Physical and Materials Sciences Arefev, Mikhail I. Shugaev, Maxim V. Zhigilei, Leonid V. Kinetics of laser-induced melting of thin gold film: How slow can it get? |
title | Kinetics of laser-induced melting of thin gold film: How slow can it get? |
title_full | Kinetics of laser-induced melting of thin gold film: How slow can it get? |
title_fullStr | Kinetics of laser-induced melting of thin gold film: How slow can it get? |
title_full_unstemmed | Kinetics of laser-induced melting of thin gold film: How slow can it get? |
title_short | Kinetics of laser-induced melting of thin gold film: How slow can it get? |
title_sort | kinetics of laser-induced melting of thin gold film: how slow can it get? |
topic | Physical and Materials Sciences |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9491712/ https://www.ncbi.nlm.nih.gov/pubmed/36129986 http://dx.doi.org/10.1126/sciadv.abo2621 |
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