At first,the La_(2/3)Sr_(1/3)MnO_3 polycrystalline bulk is synthesized through the chemical coprecipitation route innovatively and microstructure,electrical, magnetic and magnetoresistance for cor.

The propagation of linearly and circularly polarized high-intensity femtosecond laser pulses in bulk media is experimentally investigated.

The pulse spectrum broadening and dispersion compensation compression phenomenon when focusing the laser pulse into bulk media are experimentally investigated.

Based on the principle of contrasting referring to Ag_ 2 Se-Ga_ 2 Se_ 3 pseudobinary phase diagram, AgGa_ 1-x In_ x Se_ 2 polycrystalline materials with a portion of In content were synthesized by mechanical and temperature oscillation method.

The main research methods,test results,influencing factors and the micro-mechanism of two types of scale effects,namely,"smaller is stronger" and "the smaller the more weak",occurred in micro-components of polycrystalline materials are particularly summarized.

A new approach for investigation on the in-plane displacement on a grain scale for polycrystalline materials is proposed in this paper based on coupling digital image correlation method and a new type of microscope-digital microscope.

One of the main trends towards the exploitation of sensing materials is to develop the single crystal materials into polycrystalline materials and amorphous materials.

Through the detailed analysis of the machining mechanism of micro-milling polycrystalline materials,a micro-milling model is developed,where the effects of minimum chip thickness and metal phase on the mechanism are focused on.

In order to research in the novel laser crystal of molybdate,the compound-anion polycrystalline material Yb3+:NaBi(WO4)(MoO4) was synthesized by solid state reaction.