The ROS of a lossy material coated conducting cylinder has been computed and analysed, and a numerical method for computing creeping wave propagation constants and amplitudes on the surface of the cylinder is presented in the paper.

A general method for finite difference time domain modeling of wave propagation in frequency-dispersive media;

Wavelet galerkin of time domain method for dispersive media;

A finite difference time domain absorbing boundary condition for general frequency-dispersive media

Research on polaritons in photonic crystal with absorptive type of dispersive medium's layer;

The normal-mode coupling dispersive medium in a symmetric one-dimension photonic crystals(1D PCs) was studied.

Then the possibility of larger phase velocity and group velocity than light speed in dispersive medium is discussed.