The model that we have established in my paper is about Bacterial communication,the diffusion of excitation wave in medium,the dynamic behavior of fish and ant,which are all simulated on computer.

A result of the study of absorption an d luminescence of inks and ball point pen inks in infrared region was introdued,the best exciting wave band for the wr iting material matched the peak of it s reflective curve and the or-ange light is good exciting light in a pplication of emission.

Dependence of the fluorescence-conversion efficiency of PAH in different solvate on the excitation wavelength;

The photoluminescence(PL) and photoluminescence excitation(PLE) spectra of CdSe/ZnS nanocrystal are measured using UV-visible spectrophotometer and based on fluorescence spectroscopy,we discuss the effects of excitation wavelength on the spectra.

At two temperatures, when thecore complex of PSII isolated from spinach was excitedat six different excitation wavelengths ranging from 436nm to 520 nm, there is no difference in the maxima ofthe emission spectra of the core complex, and when thecore complex was excited at 480, 489, 495 and 507 nmrespectively, fluorescence inte.

Studies on the dynamic process of up-conversion green emission from Er~(3+) under square wave excitation