Theory of the Casimir effect for graphene at finite temperature
  Theory of the Casimir effect for a flat graphene layer interacting with a parallel flat material is presented in detail. The high-temperature asymptotics of a free energy in a graphene-metal system coincides with a Drude high-temperature asymptotics of the metal-metal system. High-temperature behavior in the graphene-metal system is expected at separations of the order of 100 nm at temperature T=300K. 
Valery N. Marachevsky
hep-th cond-mat.mes-hall quant-ph