نتایج جستجو برای: atomic force microscopy thermal properties
تعداد نتایج: 1413518 فیلتر نتایج به سال:
in this project, some new polyaspartimides, (pas)s, have been synthesized form michael addition reaction between new synthetic bismaleimide (bmi) and some aromatic diamines. a characteristic property of this polyaspartimides is a pendent carboxylic group, which introduced to these polymers from new bismaleimide. bismaleimides (bmi) is one of the interesting compounds, which can be self-polymeri...
objective: increased enamel surface roughness following orthodontic bracket debonding leads to increased plaque accumulation and enamel decalcification. therefore, different methods are employed to achieve smoother enamel surfaces after bracket debonding. this study compared enamel surface roughness following orthodontic bracket debonding and composite resin removal using white stone and tungst...
Recently developed adhesion atomic force microscopy was used as a technique to map the spatial arrangement of chemical functional groups at a surface with a lateral resolution of 20 nm. The ratio of the adhesion forces for different functional groups can be compared with values determined from the known surface energies. This concept was demonstrated by mapping the adhesive interaction of domai...
Molecular dynamics prediction of interfacial strength and validation through atomic force microscopy
A method for sensing the dissipation occurring when a sharp atomic force microscopy (AFM) tip is oscillated laterally above a surface at distances typical of non-contact mode AFM operation is established and demonstrated. Dissipation is detected by measuring the damping of lateral resonant modes of the AFM cantilever, excited independently after the lateral resonant mode identification, when th...
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