Zobrazeno 1 - 8
of 8
pro vyhledávání: '"H. E. Elsayed-Ali"'
Publikováno v:
Structural Dynamics, Vol 5, Iss 4, Pp 044501-044501-10 (2018)
Ultrafast lattice deformation of tens to hundreds of nanometer thick metallic crystals, after femtosecond laser excitation, was measured directly using 8.04 keV subpicosecond x-ray and 59 keV femtosecond electron pulses. Coherent phonons were generat
Externí odkaz:
https://doaj.org/article/3e94ea335a04454cbf35a5b7d51bb438
Publikováno v:
AIP Advances, Vol 1, Iss 1, Pp 012117-012117-5 (2011)
The generation of coherent phonons in polycrystalline bismuth film excited with femtosecond laser pulse is observed by ultrafast time-resolved electron diffraction. The dynamics of the diffracted intensities from the (110), (202), and (024) lattice p
Externí odkaz:
https://doaj.org/article/ed76d293ad1a43879a30aead251648b9
Autor:
Runze, Li, H E, Elsayed-Ali, Jie, Chen, Dinesh, Dhankhar, Arjun, Krishnamoorthi, Peter M, Rentzepis
Publikováno v:
The Journal of chemical physics. 151(12)
As a classic ferromagnetic material, nickel has been an important research candidate used to study dynamics and interactions of electron, spin, and lattice degrees of freedom. In this study, we specifically chose a thick, 150 nm ferromagnetic nickel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::20b48c0aaeb5061035fdb7d7f63dc66e
https://pubmed.ncbi.nlm.nih.gov/31575190
https://pubmed.ncbi.nlm.nih.gov/31575190
Autor:
H. E. Elsayed-Ali, M. A. Hafez
Publikováno v:
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 27:696-699
InN films were grown on Si(100) using femtosecond pulsed laser deposition. Laser induced breakdown of ammonia was used to generate atomic nitrogen for InN growth. An indium buffer layer was initially deposited on the Si substrate at low temperature f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::77122b90978d1d1c45a35c5c7dc36c8c
https://doi.org/10.1116/1.3151819
https://doi.org/10.1116/1.3151819
Publikováno v:
Conference on Lasers and Electro-Optics-Europe.
Superheating of solids is rarely observed due to the presence of a thin disordered surface layer formed below the melting point, Tm, which provides a nucleation site for melting. Premelting is particularly evident in open surfaces. While Pb(110) diso
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::150ce17e9897710cd93be73ae2154b11
https://doi.org/10.1364/cleo_europe.1998.cmf9
https://doi.org/10.1364/cleo_europe.1998.cmf9
Autor:
C. A. Schmuttenmaer, J. Cao, M.A. Aeschlimann, H. E. Elsayed-Ali, Y. Gao, R. J. D. Miller, D. A. Mantell
Publikováno v:
OSA Annual Meeting.
There are a number of competing models to explain the photochemistry of molecules at metal surfaces induced by short laser pulses. In order to distinguish between these models more needs to be known about the dynamics of excited carriers and how they
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09ad2d8aca6841c382525261bc3e044f
https://doi.org/10.1364/oam.1993.thddd.4
https://doi.org/10.1364/oam.1993.thddd.4
Autor:
H. E. Elsayed-Ali, J. W. Herman
Publikováno v:
Ultrafast Phenomena.
In the study of the interactions of ultrafast lasers with surfaces, a key parameter is the time evolution of the surface temperature. Typically, this is determined for simple systems using a solution of the heat-diffusion equation. It has been previo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92555c55a84b65e8233a387b8e1b4e3a
https://doi.org/10.1364/up.1990.wd4
https://doi.org/10.1364/up.1990.wd4
Publikováno v:
Ultrafast Phenomena.
If a metal is excited by laser pulses for which the pulse duration is less than or comparable to the hot electron energy loss lifetime (τe), a transient inequality between the effective electron and lattice temperatures (Te and Tℓ, respectively) o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3fa55323a385c18797d02ee9ae0bbf62
https://doi.org/10.1364/up.1990.pdp20
https://doi.org/10.1364/up.1990.pdp20