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The tribological characteristics of a 0.3nm thick silver film on an Si (111) 7x7 surface in sliding contact with diamond have been studied as a function of the substrate temperature in an ultrahigh vacuum (UHV) environment. The morphological change of the Ag film at elevated substrate temperatures was observed in situ reflection high-energy electron diffraction (RHEED). The morphology of the Ag film...
Reactive ion etching of chemical vapor deposition (CVD) diamond thin films was investigated in O2 gas plasma mixed with CF4 and electrodes distance. The optical emission spectrum of plasma species in excited electronic states was measured in order to know the information of relationship between etching rate of diamond and the concentrations of key reactive species. The RF power (13.56 MHz) was fixed...
Sliding tests of diamond/Ag monolayers/Si(111) were carried out under ultra-high vacuum conditions, and an extraordinarily low coefficient of friction 0.003 was observed. After cleaning the Si substrate surface by flashing, about 1-2 monolayers of Ag was deposited on the Si and functioned as a lubricant. Where an Ag monolayer was deposited on an oxidized Si substrate without flash cleaning, sliding...
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