The effects of impurity defects in the crystal lattices of natural sphalerite,conduction band energy level,hole-scavenger and pH value on the efficiency of photocatalytic degradation of methyl orange by natural sphalerite under visible light have been discussed based on a series of experimental results.

The conduction band of heterojunction is analyzed by Possin equation.

MOM Evaluation of TM Scattering by a Conducting Stripon a Dielectric Slab;

A mixed technique of moment method(MOM), preconditioned conjugate gradient method(PCG) and fast Fourier transform(FFT) is presented to deal with the 2D scattering from a conducting strip of electrically large size.

Nowadays, the electronic components are developing towards to high density compaction and miniaturization, which needs higher line densities and narrower line widths for interior interconnected conductive lines.