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Mesoscopic study of laser absorption by a transparent ceramic

Ribeiro, RM; Ramos, MMD; Stoneham, AM; (1998) Mesoscopic study of laser absorption by a transparent ceramic. Computational Materials Science , 10 (1-4) 33 - 37. 10.1016/S0927-0256(97)00133-X. Green open access

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Abstract

The understanding of the processes occurring on the target in pulsed laser deposition (PLD) is crucial for a fast optimisation of the deposition parameters in order to obtain high quality thin films.Phenomenon occurring in the target like the ejection of large particulates that deposit on the substrate or the formation of a rough cone shaped morphology that affect the deposition process cannot be understood in the framework of atomistic simulations, since the processes involve very large volumes. Integration of the heat equations does not seem to be the appropriate approach for the study of PLD, since it ignores the actual ways by which the energy is transferred to the target and transported through it.Mesoscopic modelling provide solutions in an intermediate scale where both results from atomistic studies and methods characteristic of macroscopic modelling are used. We are developing a mesoscopic model for PLD. In this paper, we show the results for the evaporation of a transparent material in which only structural defects can absorb light. The preliminary results show that the generated electric fields play a dramatic role in the process. Copyright (C) 1998 Elsevier Science B.V.

Type: Article
Title: Mesoscopic study of laser absorption by a transparent ceramic
Location: STRASBOURG, FRANCE
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/S0927-0256(97)00133-X
Publisher version: http://dx.doi.org/10.1016/S0927-0256(97)00133-X
Language: English
Additional information: Text made available to UCL Discovery by kind permission of Elsevier B.V., 2012. Paper published in a special issue comprising the Proceedings of Symposium D (‘Computational Modeling of Issues in Materials Science’), presented at the combined 1997 International Conference on Applied Materials/ European Materials Research Society Spring meeting (ICAM’97/E-MRS’97) Strasbourg (France), 16 to 20 June 1997. Edited by Hugues Dreysse, Yoshi Kawazoe, Luc T. Wille, Claude Demangeat
Keywords: Mesoscopic modelling, pulsed laser deposition, PLD, THIN-FILMS, SURFACES, DEPOSITION
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology
URI: http://discovery.ucl.ac.uk/id/eprint/59803
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