Cause of ZnCr_2O_4-V_2O_5-Li_2O-ZnO humidity-sensitive material's self-conductance;

Research on Gas selectivity of the humidity-sensitive material ZnCr_2O_4-V_2O_5-Li_2O-ZnO;

So it forms a new style humidity-sensitive material, in which the ZnCr_2O_4 is the main crystal-phase, and the V_2O_5-Li_2O-ZnO-SiO_2 is the glass-phase.

The present status and future development of polymer humidity sensing materials, including polymer with high and weak polar groups and polymer materials with conducting powers, are reviewed the humidity sensing mechanism of different polymers analysed.

Four types of polymer humidity sensitive materials were designed and prepared, including silicon-containing polyelectrolytes,quaternaray ammonium salt polyelectrolytes,pyrrole based polyelectrolytes,and hyperbranched polymer humidity sensitive materials.

The result demonstrated that the material of LiZnVO4 exhibits higher hu midity sensitivity and the porous glass-ceramic materials containing LiZnVO 4, such as ZnCrO4-LiZnVO4, Zn2SnO4-LiZnVO4 and TiO2-LiZnVO4 series materials, have higher humidity sensitivity and long stability, are the best humid-sensing materials series.

Zn2SnO4-LiZnVO4 and TiO2-LiZnVO4 series materials, have higher humidity sensitivity and long stability, are the best humid-sensing materials series.

The measuring thermal diffusivity of film materials by laser photoacoustic backing exciting technique;

Three types oxygen nanometer particle film materials, including transitional metal oxide (MoOx TiOx and CrOx etc.

This paper intruduces a new type of film thermocouple specially designed for the study of internal combustion engine heat transfer as well as some technical means to solve the problems in process such as the film material, filming method and the relationship between film temperature and heated voltage.