The adsorption of extracted and purified samples of asphaltenes and resins onto gold surfaces has been studied as a function of bulk concentration using a quartz crystal microbalance with dissipation measurements (QCM-D). With this device, which works equally well in transparent, opaque, and nontran
Quartz microbalance study of hydrogen and helium adsorbed on a rubidium surface.
β Scribed by G. Mistura; Hyun C. Lee; M.H.W. Chan
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 122 KB
- Volume
- 194-196
- Category
- Article
- ISSN
- 0921-4526
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β¦ Synopsis
Adsorption isotherms of H 2 and 4He on Rb measured with a quartz microbalance are presented. They el,early show sharp prewetting transitions. For H 2 on Rb a wetting temperature TW=17.89_+0.04K is found. 4He isotherms below the 3. point show the characteristic frequency drop due to superfluid onset.
π SIMILAR VOLUMES
Apatite (Ca 5 (PO 4 ) 3 OH) has long been considered as an excellent biomaterial to promote bone repairs and implant. Apatite formation induced by negatively charged nanocrystalline TiO 2 coatings soaked in simulated body fluid (SBF) was investigated using in situ quartz crystal microbalance (QCM),