Zobrazeno 1 - 10
of 670
pro vyhledávání: '"D. R. Jennison"'
Autor:
Jeffry A. Kelber, N.P. Magtoto, M. Jain, Chiranjeevi Vamala, D. R. Jennison, Peter A. Schultz
Publikováno v:
Surface Science. 601:3464-3471
The response of ordered ultrathin Al2O3 films on NiAl(1 1 0) and Ni3Al(1 1 0) substrates to sequential exposures at varying pressures of H2O between 10−7 Torr and 10−3 Torr, ambient temperature, was characterized by LEED, AES and density function
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e02862936b5f892befc189b18aad768b
https://doi.org/10.1016/j.susc.2007.06.036
https://doi.org/10.1016/j.susc.2007.06.036
Publikováno v:
Journal of Molecular Catalysis A: Chemical. 228:83-87
Recently, X-ray diffraction (XRD) and scanning tunneling microscopy (STM) experiments confirmed a theoretical prediction that the surface of the two O-layer, or 5 A, alumina film on NiAl(1 1 0) has 50% tetrahedral and 50% octahedral Al-site occupancy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::82c430cfb9af286de696bd18c6d03242
https://doi.org/10.1016/j.molcata.2004.09.082
https://doi.org/10.1016/j.molcata.2004.09.082
Publikováno v:
Surface Science. 549:115-120
Density functional theory is used to predict workfunctions, {psi}. For relaxed clean W(1 0 0), the local density approximation (LDA) agrees with experiment better than the newer generalized gradient approximation, probably due to the surface electron
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0634ce7c6a5211d2ddf058380c96cf85
https://doi.org/10.1016/j.susc.2003.10.027
https://doi.org/10.1016/j.susc.2003.10.027
Autor:
D. R. Jennison, Thomas R. Mattsson
Publikováno v:
Surface Science. 544:L689-L696
Chambers et al. [Science 297 (2002) 827] recently reported room temperature laminar growth of Co deposited in vacuum from an evaporation source on fully hydroxylated but otherwise clean α-Al 2 O 3 (0 0 0 1). We extend this work to a number of metals
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4165f1b0a766562ee57e590668b3eb0
https://doi.org/10.1016/j.susc.2003.07.012
https://doi.org/10.1016/j.susc.2003.07.012
Autor:
Alexander Bogicevic, D. R. Jennison
Publikováno v:
Surface Science. 515:L481-L486
Point defects on oxide surfaces, presumably oxygen vacancies, are traditionally considered preferential nucleation centers for metal island formation. In a series of first-principles calculations for transition and noble metal nucleation on MgO(1 0 0
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9868d0ab9bfaf83b5cac5210fca6bc11
https://doi.org/10.1016/s0039-6028(02)02024-1
https://doi.org/10.1016/s0039-6028(02)02024-1
Publikováno v:
Surface Science. 472:L157-L163
Under ultrahigh vacuum conditions at 300 K, the applied electric field and/or resulting current from an STM tip creates nanoscale voids at the interface between an epitaxial, 7.0 A thick Al2O3 film and a Ni3Al(1 1 1) substrate. This phenomenon is ind
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7687d53675953ec69b791111d100e1a7
https://doi.org/10.1016/s0039-6028(00)00948-1
https://doi.org/10.1016/s0039-6028(00)00948-1
Autor:
D. R. Jennison, K Shepherd, C. Niu, J. Tong, D Martini, Alexander Bogicevic, Jeffry A. Kelber
Publikováno v:
Surface Science. 465:163-176
XPS studies and first principles calculations compare Cu adsorption on heavily hydroxylated sapphire (0001) with a dehydroxylated surface produced by Ar{sup +} sputtering followed by annealing in O{sub 2}. Annealing a cleaned sapphire sample with an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b858f38d39aeb20db090f0cb9107b4b6
https://doi.org/10.1016/s0039-6028(00)00728-7
https://doi.org/10.1016/s0039-6028(00)00728-7
Publikováno v:
Surface Science. 446:76-88
XPS studies have been carried out on sputter deposited copper on a substantially hydroxylated {alpha}-Al{sub 2}O{sub 3}(0001) (sapphire) surface under ultra-high vacuum (UHV) conditions. XPS-derived Cu uptake curves show a sharp change in slope at a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d023aeaa9c9c1be908b82b0737cf3159
https://doi.org/10.1016/s0039-6028(99)01089-4
https://doi.org/10.1016/s0039-6028(99)01089-4
Autor:
D. R. Jennison, Leo Gross, M. P. Sears, Peter A. Schultz, Min Li, Michael A. Henderson, Wilhelm Hebenstreit, Ulrike Diebold
Publikováno v:
Surface Science. 437:173-190
We report a comprehensive experimental and theoretical study of the eVect of oxidizing a TiO 2 (110) surface at moderate temperatures. The surfaces are investigated with scanning tunneling microscopy (STM ), low-energy He+ ion scattering (LEIS ) and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d35dc7c4de852555f323ae6f391e102a
https://doi.org/10.1016/s0039-6028(99)00720-7
https://doi.org/10.1016/s0039-6028(99)00720-7
Publikováno v:
Physical Review B. 59:R15605-R15608
On several metallic substrates, first-principles density-functional calculations of ${\mathrm{Al}}_{2}{\mathrm{O}}_{3}$ 5--7 \AA{} films predict a structure, stabilized by interfacial electrostatics, which has no bulk counterpart. In two and three O-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b8e044c95c57a3accab7346ba25252e4
https://doi.org/10.1103/physrevb.59.r15605
https://doi.org/10.1103/physrevb.59.r15605