Silver metal. Protected silver has greater optical reflectivity than aluminium at all wavelengths longer than ~450 nm. At wavelengths shorter than 450 nm, silver's reflectivity is inferior to that of aluminium and drops to zero near 310 nm. Very high electrical and thermal conductivity is common to the elements in group 11, because their single s electron is free and does not interact with the filled d subshell, as such interactions (which occur in the preceding transition metals) lower electron mobility. The electrical conductivity of silver is the greatest of all metals, greater even than copper, but it is not widely
Interfacial thermal resistance of the spectrum, one of the highest thermal conductances "measured" is between aluminum and copper. At room temperature, the Al-Cu interface has a conductance of 4 GW m K. The high thermal conductance of the interface should not be unexpected given the high electrical conductivity of both materials. The superior thermal conductivity of Carbon nanotubes makes it an excellent candidate for making composite materials. But interfacial resistance impacts the effective thermal conductivity. This area is not well studied and only a few studies have been done to understand the basic mechanism of this resistance. Interfacial thermal resistance Interfacial thermal resistance,