2 papers
cond-mat.mtrl-sci2008
Electronic Conductivity Upturn of HOPG Contrast to Transport Properties of Polycrystal Graphite
Zhiming Wang, Feng Xu, Chao Lu +3
The transport properties of highly oriented pyrolitic graphite (HOPG) and polycrystal graphite have been studied. The electric conductivity of HOPG is several times larger than tha…
math.DG2007
On some sub-Riemannian objects in hypersurfaces of sub-Riemannian manifolds
Kang-Hai Tan, Xiao-Ping Yang
We study some sub-Riemannian objects (such as horizontal connectivity, horizontal connection, horizontal tangent plane, horizontal mean curvature) in hypersurfaces of sub-Riemannia…