Zobrazeno 1 - 10
of 236
pro vyhledávání: '"W.N. Unertl"'
Publikováno v:
Tribology Letters. 5:103-107
We demonstrate the effects of shear modulation on the viscoelastic response of nanometer‐scale single‐asperity contacts under static and dynamic loading conditions. Contact stiffness and relaxation time are determined for contacts to poly(vinylet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a099f0c076177d90eda61f30e315c274
https://doi.org/10.1023/a:1019169019617
https://doi.org/10.1023/a:1019169019617
Publikováno v:
Tribology Letters. 4:199-204
A nanotribometer has been developed for exploring friction and wear in nanometer to micrometer diameter sliding contacts. The nanotribometer is based on a scanning force microscope design developed at NIST. Interferometers and capacitance gages are u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e50d4f63df43a38877cc9b84d8707dbe
https://doi.org/10.1023/a:1016131323735
https://doi.org/10.1023/a:1016131323735
Autor:
D.D. Woodland, W.N. Unertl
Publikováno v:
Wear. :685-691
The initial wear in nanometer-scale contacts between Si 3 N 4 tips with 20 nm nominal radius and polystyrene surfaces was studied in air using a scanning force microscope. Polystyrene films had molecular weights (MW) 24 k and 210 k and were cast from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::89acd3d10a085fd9d23b0e71dc2fd53c
https://doi.org/10.1016/s0043-1648(96)07415-7
https://doi.org/10.1016/s0043-1648(96)07415-7
Publikováno v:
Journal of Adhesion Science and Technology. 9:801-811
The effect of the addition of clay and TiO2 pigments on the surface energy and surface chemistry of films made from polymers used in paper coating formulations was evaluated. The polymers were carboxymethyl cellulose, polyvinyl alcohol and a protein-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3efdea09b7c4527067df25a90b9f3620
https://doi.org/10.1163/156856195x00707
https://doi.org/10.1163/156856195x00707
Publikováno v:
Surface Science. :124-131
Metal surfaces can be functionalised by the chemisorption of a bifunctional molecule. One functionality is used to form the chemisorption bond, while the second is directed away from the substrate and available for bonding to a second, potentially di
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::522bd123949e9f019dc0e930e233902c
https://doi.org/10.1016/0039-6028(94)90381-6
https://doi.org/10.1016/0039-6028(94)90381-6
Autor:
J.A. Lin, W.N. Unertl
Publikováno v:
Journal of Adhesion Science and Technology. 8:913-927
Grooves with nanometer scale dimensions can be fabricated on polymer surfaces by moving the tip of an atomic force microscope (AFM) across the surface at constant velocity and fixed applied force F. The grooves consist of a central trough with pile-u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::761a9d0523afe09ded0744358d34145c
https://doi.org/10.1163/156856194x00528
https://doi.org/10.1163/156856194x00528
Autor:
W.N. Unertl
Publikováno v:
High Performance Polymers. 2:15-24
Titanium was evaporated onto PMDA-ODA polyimide surfaces at room temperature up to total thicknesses of about five monolayers. The polyimide backbone is ruptured at both the oxygen ether linkage in the ODA and at the nitrogen imide linkage. The first
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8d3ff19afbeb35d8c587318375c4155c
https://doi.org/10.1177/152483999000200102
https://doi.org/10.1177/152483999000200102
Autor:
W.N. Unertl, P Samanta
Publikováno v:
Surface Science Letters. 175:L721-L724
Carbon has been observed to segregate to the surface during deposition of Te to form the 2(√3×√3)R30° structure on a Ni(111) surface. The carbon redissolves into the bulk when the Te coverage is increased to form a (√3×√3)R30° + 2(√3×
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::097717c06145d14c185acbd6c9c6509e
https://doi.org/10.1016/0167-2584(86)90307-5
https://doi.org/10.1016/0167-2584(86)90307-5