No-Slip Boundary Conditions for Electron Hydrodynamics and the Thermal Casimir Pressure

We derive modified reflection coefficients for electromagnetic waves in the THz and far infrared range. The idea is based on hydrodynamic boundary conditions metallic conduction electrons. temperature-dependent part of Casimir pressure between metal plates evaluated. results should shed light “thermal anomaly,” where measurements deviate from standard fluctuation electrodynamics conducting metals.