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  Cold ablation driven by localized forces in alkali halides

Hada, M., Zhang, D., Pichugin, K., Hirscht, J., Kochman, M., Hayes, S., et al. (2014). Cold ablation driven by localized forces in alkali halides. Nature Communications, 5: 3863. doi:10.1038/ncomms4863.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-BE77-1 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0028-1983-1
Genre: Journal Article

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https://dx.doi.org/10.1038/ncomms4863 (Publisher version)
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 Creators:
Hada, Masaki1, 2, Author              
Zhang, Dongfang1, 2, Author              
Pichugin, Kostyantyn1, 2, Author              
Hirscht, Julian1, 2, Author              
Kochman, Michał1, 2, 3, Author              
Hayes, Stuart1, 2, Author              
Manz, Stephanie1, 2, Author              
Gengler, Régis Y. N.1, 2, Author              
Wann, Derek A.3, Author
Seki, Toshio4, Author
Moriena, Gustavo1, 2, 5, Author              
Morrison, Carole A.3, Author
Matsuo, Jiro4, Author
Sciaini, Germán1, 2, Author              
Miller, R. J. Dwayne1, 2, 5, Author              
Affiliations:
1Miller Group, Atomically Resolved Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938288              
2The Hamburg Centre for Ultrafast Imaging, Luruper Chaussee 149, 22761 Hamburg, Germany, ou_persistent22              
3School of Chemistry, University of Edinburgh, West Mains Road, Edinburgh EH9 3JJ, Scotland, ou_persistent22              
4Quantum Science and Engineering Center, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan, ou_persistent22              
5Departments of Chemistry and Physics, University of Toronto, 80 St George St, Toronto, Ontario, Canada M5S3H6, ou_persistent22              

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Free keywords: Physical sciences; Materials science; Condensed matter
 Abstract: Laser ablation has been widely used for a variety of applications. Since the mechanisms for ablation are strongly dependent on the photoexcitation level, so called cold material processing has relied on the use of high-peak-power laser fluences for which nonthermal processes become dominant; often reaching the universal threshold for plasma formation of ~1 J cm-2 in most solids. Here we show single-shot time-resolved femtosecond electron diffraction, femtosecond optical reflectivity and ion detection experiments to study the evolution of the ablation process that follows femtosecond 400 nm laser excitation in crystalline sodium chloride, caesium iodide and potassium iodide. The phenomenon in this class of materials occurs well below the threshold for plasma formation and even below the melting point. The results reveal fast electronic and localized structural changes that lead to the ejection of particulates and the formation of micron-deep craters, reflecting the very nature of the strong repulsive forces at play.

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Language(s): eng - English
 Dates: 2013-12-022014-04-112014-05-19
 Publication Status: Published online
 Pages: 8
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: BibTex Citekey: Hada2014
DOI: 10.1038/ncomms4863
 Degree: -

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Title: Nature Communications
  Abbreviation : Nat. Commun.
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 5 Sequence Number: 3863 Start / End Page: - Identifier: ISSN: 2041-1723
CoNE: /journals/resource/2041-1723