Výsledky vyhledávání - "J. M. Donato"

Computational modeling of physical processes during laser ablation

Autor: Alexander A. Puretzky, Kuan-Ren Chen, J. M. Donato, D. B. Geobegan, J. N. Leboeuf, R. F. Wood, C. L. Liu

Publikováno v: Materials Science and Engineering: B. 47:70-77

A combined theoretical and experimental effort to model various physical processes during laser ablation of solids using a variety of computational techniques is described. Currently the focus of the modeling is on the following areas: (a) rapid tran

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::53ac3494440418a14fe8477c98cabc99
https://doi.org/10.1016/s0921-5107(96)01883-1

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Mechanisms affecting kinetic energies of laser‐ablated materials

Autor: J. N. Leboeuf, R. F. Wood, C. L. Liu, Kuan-Ren Chen, David B. Geohegan, Alexander A. Puretzky, J. M. Donato

Publikováno v: Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 14:1111-1114

A dynamic source effect was found to accelerate the plume expansion velocity much higher than that from a conventional free‐expansion model. A self‐similar theory and a hydrodynamic model are developed to study this effect, which may help to expl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::653a6aad776a00e86b6c1f75de8f42de
https://doi.org/10.1116/1.580278

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Modeling of plume dynamics in laser ablation processes for thin film deposition of materials

Autor: J. N. Leboeuf, J. M. Donato, David B. Geohegan, Kuan-Ren Chen, R. F. Wood, C. L. Liu, Alexander A. Puretzky

Publikováno v: Physics of Plasmas. 3:2203-2209

The transport dynamics of laser-ablated neutral/plasma plumes are of significant interest for film growth by pulsed-laser deposition of materials since the magnitude and kinetic energy of the species arriving at the deposition substrate are key proce

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5f727cf8b4c5295b59bb455a28bcf48c
https://doi.org/10.1063/1.871676

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Laser-solid interaction and dynamics of laser-ablated materials

Autor: Kuan-Ren Chen, R. F. Wood, C. L. Liu, J. N. Leboeuf, David B. Geohegan, J. M. Donato, Alexander A. Puretzky

Publikováno v: Applied Surface Science. :45-49

An annealing model is extended to treat the vaporization process, and a hydrodynamic model describes the ablated material. We find that dynamic source and ionization effects accelerate the expansion front of the ablated plume with thermal vaporizatio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::af581f529c77f7d8b052f1da1f95affa
https://doi.org/10.1016/0169-4332(95)00463-7

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Modeling of dynamical processes in laser ablation

Autor: R. F. Wood, David B. Geohegan, C. L. Liu, Kuan-Ren Chen, J. M. Donato, Alexander A. Puretzky, J. N. Leboeuf

Publikováno v: Applied Surface Science. :14-23

Various physics and computational approaches have been developed to globally characterize phenomena important for film growth by pulsed-laser deposition of materials. These include thermal models of laser-solid target interactions that initiate the v

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f7a155c9e72c51c20a29213d0d1a7428
https://doi.org/10.1016/0169-4332(95)00372-x

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Accelerated Expansion of Laser-Ablated Materials near a Solid Surface

Autor: J. N. Leboeuf, David B. Geohegan, Alexander A. Puretzky, Kuan-Ren Chen, R. F. Wood, C. L. Liu, J. M. Donato

Publikováno v: Physical Review Letters. 75:4706-4709

A dynamic source effect that accelerates the expansion of laser-ablated material in the direction perpendicular to the target is demonstrated. A self-similar theory shows that the maximum expansion velocity is proportional to {ital c}{sub {ital s}}/{

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::413837d94cfb00880b637bf45623d033
https://doi.org/10.1103/physrevlett.75.4706

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Dynamical Modeling of Laser ablation Processes

Autor: J. M. Donato, Kuan-Ren Chen, J. N. Leboeuf, David B. Geohegan, R. F. Wood, C. L. Liu, Alexander A. Puretzky

Publikováno v: MRS Proceedings. 388

Several physics and computational approaches have been developed to globally characterize phenomena important for film growth by pulsed laser deposition of materials. these include thermal models of laser-solid target interactions that initiate the v

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4393a1af4c7fdfbd65772f7a4e7583ad
https://doi.org/10.1557/proc-388-3

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Vapor Breakdown During ablation by Nanosecond Laser Pulses

Autor: J. N. Leboeuf, J. M. Donato, Alexander A. Puretzky, R. F. Wood, C. L. Liu, David B. Geohegan, Kuan-Ren Chen

Publikováno v: MRS Proceedings. 388

Plasma generation through vapor breakdown during ablation of a Si target by nanosecond KrF laser pulses is modeled using 0-dimensional rate equations. Although there is some previous work on vapor breakdown by microsecond laser pulses, there have bee

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b35f800142deb4302f37f0431bdbb9f7
https://doi.org/10.1557/proc-388-133

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Laser-Solid Interaction and Dynamics of the Laser-Ablated Materials

Autor: David B. Geohegan, Alexander A. Puretzky, Kuan-Ren Chen, R. F. Wood, C. L. Liu, J. M. Donato, J. N. Leboeuf

Publikováno v: MRS Proceedings. 388

Rapid transformations through the liquid and vapor phases induced by laser-solid interactions are described by our thermal model with the Clausius-Clapeyron equation to determine the vaporization temperature under different surface pressure condition

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9d702834968c258e3a72c5d80af4e921
https://doi.org/10.1557/proc-388-27

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