Cargando…
Emergence of liquid following laser melting of gold thin films
X-ray structural science is undergoing a revolution driven by the emergence of X-ray Free-electron Laser (XFEL) facilities. The structures of crystalline solids can now be studied on the picosecond time scale relevant to phonons, atomic vibrations which travel at acoustic velocities. In the work pre...
Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
International Union of Crystallography
2023
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10619456/ https://www.ncbi.nlm.nih.gov/pubmed/37903100 http://dx.doi.org/10.1107/S2052252523009363 |
_version_ | 1785129994087825408 |
---|---|
author | Robinson, Ian K. Griffiths, Jack P. Koch, Robert Assefa, Tadesse A. Suzana, Ana F. Cao, Yue Kim, Sungwon Kim, Dongjin Lee, Heemin Kim, Sunam Lee, Jae Hyuk Park, Sang-Youn Eom, Intae Park, JaeHyun Nam, Daewoong Kim, Sangsoo Chun, Sae Hwan Hyun, Hyojung Kim, Kyung-Sook Lu, Ming Song, Changyong Kim, Hyunjung Billinge, Simon J. L. Bozin, Emil S. |
author_facet | Robinson, Ian K. Griffiths, Jack P. Koch, Robert Assefa, Tadesse A. Suzana, Ana F. Cao, Yue Kim, Sungwon Kim, Dongjin Lee, Heemin Kim, Sunam Lee, Jae Hyuk Park, Sang-Youn Eom, Intae Park, JaeHyun Nam, Daewoong Kim, Sangsoo Chun, Sae Hwan Hyun, Hyojung Kim, Kyung-Sook Lu, Ming Song, Changyong Kim, Hyunjung Billinge, Simon J. L. Bozin, Emil S. |
author_sort | Robinson, Ian K. |
collection | PubMed |
description | X-ray structural science is undergoing a revolution driven by the emergence of X-ray Free-electron Laser (XFEL) facilities. The structures of crystalline solids can now be studied on the picosecond time scale relevant to phonons, atomic vibrations which travel at acoustic velocities. In the work presented here, X-ray diffuse scattering is employed to characterize the time dependence of the liquid phase emerging from femtosecond laser-induced melting of polycrystalline gold thin films using an XFEL. In a previous analysis of Bragg peak profiles, we showed the supersonic disappearance of the solid phase and presented a model of pumped hot electrons carrying energy from the gold surface to scatter at internal grain boundaries. This generates melt fronts propagating relatively slowly into the crystal grains. By conversion of diffuse scattering to a partial X-ray pair distribution function, we demonstrate that it has the characteristic shape obtained by Fourier transformation of the measured F(Q). The diffuse signal fraction increases with a characteristic rise-time of 13 ps, roughly independent of the incident pump fluence and consequent final liquid fraction. This suggests the role of further melt-front nucleation processes beyond grain boundaries. |
format | Online Article Text |
id | pubmed-10619456 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | International Union of Crystallography |
record_format | MEDLINE/PubMed |
spelling | pubmed-106194562023-11-02 Emergence of liquid following laser melting of gold thin films Robinson, Ian K. Griffiths, Jack P. Koch, Robert Assefa, Tadesse A. Suzana, Ana F. Cao, Yue Kim, Sungwon Kim, Dongjin Lee, Heemin Kim, Sunam Lee, Jae Hyuk Park, Sang-Youn Eom, Intae Park, JaeHyun Nam, Daewoong Kim, Sangsoo Chun, Sae Hwan Hyun, Hyojung Kim, Kyung-Sook Lu, Ming Song, Changyong Kim, Hyunjung Billinge, Simon J. L. Bozin, Emil S. IUCrJ Topical Reviews X-ray structural science is undergoing a revolution driven by the emergence of X-ray Free-electron Laser (XFEL) facilities. The structures of crystalline solids can now be studied on the picosecond time scale relevant to phonons, atomic vibrations which travel at acoustic velocities. In the work presented here, X-ray diffuse scattering is employed to characterize the time dependence of the liquid phase emerging from femtosecond laser-induced melting of polycrystalline gold thin films using an XFEL. In a previous analysis of Bragg peak profiles, we showed the supersonic disappearance of the solid phase and presented a model of pumped hot electrons carrying energy from the gold surface to scatter at internal grain boundaries. This generates melt fronts propagating relatively slowly into the crystal grains. By conversion of diffuse scattering to a partial X-ray pair distribution function, we demonstrate that it has the characteristic shape obtained by Fourier transformation of the measured F(Q). The diffuse signal fraction increases with a characteristic rise-time of 13 ps, roughly independent of the incident pump fluence and consequent final liquid fraction. This suggests the role of further melt-front nucleation processes beyond grain boundaries. International Union of Crystallography 2023-10-31 /pmc/articles/PMC10619456/ /pubmed/37903100 http://dx.doi.org/10.1107/S2052252523009363 Text en © Ian Robinson et al. 2023 https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited. |
spellingShingle | Topical Reviews Robinson, Ian K. Griffiths, Jack P. Koch, Robert Assefa, Tadesse A. Suzana, Ana F. Cao, Yue Kim, Sungwon Kim, Dongjin Lee, Heemin Kim, Sunam Lee, Jae Hyuk Park, Sang-Youn Eom, Intae Park, JaeHyun Nam, Daewoong Kim, Sangsoo Chun, Sae Hwan Hyun, Hyojung Kim, Kyung-Sook Lu, Ming Song, Changyong Kim, Hyunjung Billinge, Simon J. L. Bozin, Emil S. Emergence of liquid following laser melting of gold thin films |
title | Emergence of liquid following laser melting of gold thin films |
title_full | Emergence of liquid following laser melting of gold thin films |
title_fullStr | Emergence of liquid following laser melting of gold thin films |
title_full_unstemmed | Emergence of liquid following laser melting of gold thin films |
title_short | Emergence of liquid following laser melting of gold thin films |
title_sort | emergence of liquid following laser melting of gold thin films |
topic | Topical Reviews |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10619456/ https://www.ncbi.nlm.nih.gov/pubmed/37903100 http://dx.doi.org/10.1107/S2052252523009363 |
work_keys_str_mv | AT robinsoniank emergenceofliquidfollowinglasermeltingofgoldthinfilms AT griffithsjackp emergenceofliquidfollowinglasermeltingofgoldthinfilms AT kochrobert emergenceofliquidfollowinglasermeltingofgoldthinfilms AT assefatadessea emergenceofliquidfollowinglasermeltingofgoldthinfilms AT suzanaanaf emergenceofliquidfollowinglasermeltingofgoldthinfilms AT caoyue emergenceofliquidfollowinglasermeltingofgoldthinfilms AT kimsungwon emergenceofliquidfollowinglasermeltingofgoldthinfilms AT kimdongjin emergenceofliquidfollowinglasermeltingofgoldthinfilms AT leeheemin emergenceofliquidfollowinglasermeltingofgoldthinfilms AT kimsunam emergenceofliquidfollowinglasermeltingofgoldthinfilms AT leejaehyuk emergenceofliquidfollowinglasermeltingofgoldthinfilms AT parksangyoun emergenceofliquidfollowinglasermeltingofgoldthinfilms AT eomintae emergenceofliquidfollowinglasermeltingofgoldthinfilms AT parkjaehyun emergenceofliquidfollowinglasermeltingofgoldthinfilms AT namdaewoong emergenceofliquidfollowinglasermeltingofgoldthinfilms AT kimsangsoo emergenceofliquidfollowinglasermeltingofgoldthinfilms AT chunsaehwan emergenceofliquidfollowinglasermeltingofgoldthinfilms AT hyunhyojung emergenceofliquidfollowinglasermeltingofgoldthinfilms AT kimkyungsook emergenceofliquidfollowinglasermeltingofgoldthinfilms AT luming emergenceofliquidfollowinglasermeltingofgoldthinfilms AT songchangyong emergenceofliquidfollowinglasermeltingofgoldthinfilms AT kimhyunjung emergenceofliquidfollowinglasermeltingofgoldthinfilms AT billingesimonjl emergenceofliquidfollowinglasermeltingofgoldthinfilms AT bozinemils emergenceofliquidfollowinglasermeltingofgoldthinfilms |