Using the vibrating-wire microbalance technique we have found that superfluid He4, normal fluid He4, and He3 all wet graphite completely. Incomplete wetting above T was simulated by intentionally introducing a temperature gradient in the apparatus. Data in the thick-film regime are found to be consistent with the Frenkel-Halsey-Hill model of adsorption. The graphite fiber surface has been characterized through volumetric adsorption isotherms, revealing additional surface area not previously accounted for by others using this technique.
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics