Adhesion Between Surfaces Separated by Molecularly Thin Perfluoropolyether Films
نویسندگان
چکیده
منابع مشابه
Crystalline-to-plastic phase transitions in molecularly thin n-dotriacontane films adsorbed on solid surfaces.
Crystalline-to-rotator phase transitions have been widely studied in bulk hydrocarbons, in particular in normal alkanes. But few studies of these transitions deal with molecularly thin films of pure n-alkanes on solid substrates. In this work, we were able to grow dotriacontane (n-C(32)H(66)) films without coexisting bulk particles, which allows us to isolate the contribution to the ellipsometr...
متن کاملSolvation and Reaction of Ammonia in Molecularly Thin Water Films
Determining the interaction and solvation structure of molecules with solvents near a surface is of fundamental importance for understanding electroand photochemical processes. Here we used scanning tunneling microscopy (STM) to investigate the adsorption and solvation structure of ammonia on water monolayers on Pt(111). We found that at low coverage NH3 binds preferentially to H2O molecules th...
متن کاملContrasting friction and diffusion in molecularly thin confined films.
We study, using fluorescence correlation spectroscopy, translational diffusion in molecularly thin liquids confined within a surface forces apparatus. The diffusion coefficient decreases exponentially from the edges towards the center of the Hertzian contact and further suggests the presence of a small number of distinct diffusion processes. This holds alike a crystallizable fluid (OMCTS) and a...
متن کاملSolvation forces between molecularly rough surfaces.
Surface heterogeneity affects significantly wetting and adhesion properties. However, most of the theories and simulation methods of calculating solid-fluid interactions assume a standard thermodynamic model of the Gibbs' dividing solid-fluid interface, which is molecularly smooth. This assumption gives rise to a layering of the fluid phase near the surface that is displayed in oscillating dens...
متن کاملSurfaces, Interfaces, Liquids and Thin Films
C410 depth profile the surface disorder and possible pressure induced phase transitions. The results indicate that all of the studied compounds were changed due to the compression. The GID analysis shows that the surface regions of the compacted tolbutamide, carbamazepine and chlorpropamide tablets were disordered. The manifestations of the disordering in the diffractographs are the increased p...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Tribology Letters
سال: 2010
ISSN: 1023-8883,1573-2711
DOI: 10.1007/s11249-009-9571-y