The investigation of electrochromic effect of corona-poled nonlinear optical polymer films is an effective method for the estimation of poling level and the selection of poling conditions. The poling electric field E_...The investigation of electrochromic effect of corona-poled nonlinear optical polymer films is an effective method for the estimation of poling level and the selection of poling conditions. The poling electric field E_p and orientational order parameter Φ, which are the important parameters to predict d_(33) of poled films, can be calculated by a simple operation from the number of red shift of charge transfer absorption band. The calculated results are in good agreement with the experimental data.展开更多
High T<sub>c</sub> superconductivity has recently been discoveredt. The results obtained in our laboratory and reported here confirm high-temperature superconductivity in Y-Ba-Cu-O system and further prese...High T<sub>c</sub> superconductivity has recently been discoveredt. The results obtained in our laboratory and reported here confirm high-temperature superconductivity in Y-Ba-Cu-O system and further present some preliminary results of far infrared absorption spectra of YBa<sub>2</sub>Cu<sub>3</sub>O<sub>x</sub> and YBaCu<sub>2</sub>O<sub>x</sub> at room temperature and liquid ni-展开更多
In this paper, the poling properties of (PS)O-DCV, a derivative of poly (p-hydroxystyrene ), was reported. The investigations showed that the thermochromism correction, which was neglected in the literatures, should b...In this paper, the poling properties of (PS)O-DCV, a derivative of poly (p-hydroxystyrene ), was reported. The investigations showed that the thermochromism correction, which was neglected in the literatures, should be considered in the measurements of order parameter of poled films with electrochromism technique Here, another linear optical method, IR and polarized IR spectra for characterizing of poled films was suggested first time. The bulk second nonlinear optical coefficient d_(33) of poled films could be estimated by measured order parameter semi-qualitatively.展开更多
The recent discovery of high T_C superconductivity in La-Ba-CuO systems has evoked very strong interest in research for high T_C superconductors all over the world.
文摘The investigation of electrochromic effect of corona-poled nonlinear optical polymer films is an effective method for the estimation of poling level and the selection of poling conditions. The poling electric field E_p and orientational order parameter Φ, which are the important parameters to predict d_(33) of poled films, can be calculated by a simple operation from the number of red shift of charge transfer absorption band. The calculated results are in good agreement with the experimental data.
基金Project supported by the National Natural Science Foundation of China.
文摘High T<sub>c</sub> superconductivity has recently been discoveredt. The results obtained in our laboratory and reported here confirm high-temperature superconductivity in Y-Ba-Cu-O system and further present some preliminary results of far infrared absorption spectra of YBa<sub>2</sub>Cu<sub>3</sub>O<sub>x</sub> and YBaCu<sub>2</sub>O<sub>x</sub> at room temperature and liquid ni-
文摘In this paper, the poling properties of (PS)O-DCV, a derivative of poly (p-hydroxystyrene ), was reported. The investigations showed that the thermochromism correction, which was neglected in the literatures, should be considered in the measurements of order parameter of poled films with electrochromism technique Here, another linear optical method, IR and polarized IR spectra for characterizing of poled films was suggested first time. The bulk second nonlinear optical coefficient d_(33) of poled films could be estimated by measured order parameter semi-qualitatively.
文摘The recent discovery of high T_C superconductivity in La-Ba-CuO systems has evoked very strong interest in research for high T_C superconductors all over the world.
