The luminous materials of CaSiO3∶(Pb,Mn)are synthesized by sol-gel method and ultrasound technology. The properties of the phosphors were charaterized by luminescence speatrum,DTA-TG,XRD,FTIR and TEM.
Influences of Eu3+ ion concentration and calcining temperature on the luminescence property of Al2O3:Eu phosphor was analyzed with a fluorescence spectrometer.
XRD, SEM, Surface Luminescence Meter, Spectrophotometer indicate that the photoluminescence glaze obtained maintains thephosphorescence properties of SrAl2O4:Eu2~,Dy3~ phosphor, it exhibits broad band emission spectra peaking at 520nm,the persistence time last 12 hours.
A new method for rapidly detecting restriction enzyme patterns of Mycobacterium DNA using capillary electrophoresis with laser-induced fluorescence detection (CE-LIFD) was developed.
The UV-vis absorption and fluorescence spectra, thermal stability of spectral property, phase transition behavior and morphology of the synthesized polymers were investigated.
With increasing the length of the alkyl side chain, the UV and fluorescence spectra exhibit an obvious blue shift compared with those of the unsubstituted polymer.
X-ray diffraction (XRD) was applied to get the parameters of the LBO structure, thermoluminescence (TL) and optically stimulated luminescence (OSL) were measured, and a second-order exponential decay model was fitted to the OSL decay curves.
The luminescent properties of the samples were investigated and the up-conversion luminescence of Er3+, Ho3+ and Tm3+ doped Sr2CeO4 phosphors was observed.
Their fluorescence properties were studied by photoluminescence, which indicated that the luminescence wavelength of 5-and 2-substitued-8-hydroxyquinoline derivatives shifted to red in comparison with that of 8-hydroxyquinoline.
Their fluorescence properties were studied by photoluminescence, which indicated that the luminescence wavelength of 5-and 2-substitued-8-hydroxyquinoline derivatives shifted to red in comparison with that of 8-hydroxyquinoline.
We have studied the photoluminescence (PL) of the hole-net structure of silicon and the porous structure of SiGe where the PL intensity at 706 nm and 725 nm wavelength increases obviously.
Two types of radioisotope X-ray fluorescence analysers for Ca-and Fe-determination ofcement meal have been made.For the determination of CaO content, a ~3H-Ti radioisotopesource has been adopted in both types.By proper choice of the upper-limit of the windowof the pulse-height analyser, the interference of FeKX can be effectively eliminated.For the determination of Fe_2O_3 content, a ~3H-Ti radioisotope source is adopted in one ty-pe, a ~3H-Zr source in the other.By using a compensation filter, both the int...
The technique of radio-fluorography used for silica-gel TLC and polyacrylamide TLC is described. It has the advantages of short time of exposure, high resolution and sensitivity. At the optimal temperature of - 70℃, with added xylene scintillator mixture, the sensitivity may be increased about 100 times as compared with the usual radioautography.
Absorption, fluorescence and lifetime measurements of Cr~(3+) in phosphate and fluoro-phosphate glasses have been performed.Analysis and calculation of the experimental databased on the ligand field theory were carried out.Meanwhile, laser narrow line(5106A or5782A)excited fluorescence spectra of Cr~(3+) in two kinds of glasses have been studies byusing the copper vapour laser.It was found that selective excitation of Cr~(3+) ions occurredevidently in the experiments. Furthemore, time-resolved fluorescence ...