We successfully label-free and real-time detect the capture processes of human immunoglobulin G (IgG)/goat anti-human IgG and mouse IgG/goat anti-mouse IgG antigen-antibody pairs with different concentrations using th...We successfully label-free and real-time detect the capture processes of human immunoglobulin G (IgG)/goat anti-human IgG and mouse IgG/goat anti-mouse IgG antigen-antibody pairs with different concentrations using the oblique-incidence reflectivity difference (OIRD) method,and obtain the interaction kinetics curves and the interaction times.The experimental results prove that the OIRD method is a promising technique for label-free and real-time detection of the biomolecular interaction processes and achieving the quantitative information of interaction kinetics.展开更多
The n-type conductive BaNb_(0.3) Ti_(0.7)O_(3) thin films were grown on SrTiO_(3) (001) substrates by computer-controlled laser molecular beam epitaxy. The BaNb0.3Ti0.7O3 films with (001) orientation are epitaxially g...The n-type conductive BaNb_(0.3) Ti_(0.7)O_(3) thin films were grown on SrTiO_(3) (001) substrates by computer-controlled laser molecular beam epitaxy. The BaNb0.3Ti0.7O3 films with (001) orientation are epitaxially grown on SrTiO_(3) substrates, as confirmed by x-ray diffraction techniques. The root-mean-square surface roughness of the deposited thin films is measured to be 0.24 nm by atomic force microscopy. The resistivity, carrier concentration and mobility of the BaNb_(0.3)Ti_(0.7)O_(3) thin film are 5.9 × 10^(-4) Ω. cm, 1.8 × 10^(21)cm^(-3) and 10. 7cm^(2).V^(-1).s^(-1) at room temperature,respectively, which are the best values in Nb-doped BaTiO3 thin films reported so far to our knowledge.展开更多
A pyrometric absorption method suitable for strongly absorbing films has been developed to monitor the YBa_(2)Cu_(3)O_(7-δ)film growth.This method makes use of the temperature difference between the heater and the su...A pyrometric absorption method suitable for strongly absorbing films has been developed to monitor the YBa_(2)Cu_(3)O_(7-δ)film growth.This method makes use of the temperature difference between the heater and the substrate.By deducing the absorption formula of radiation light and fitting it to the radiation intensity data measured,it is possible to monitor the film thickness and the film surface temperature during deposition.Experimental results show that this is a simple and practicable method.展开更多
Laser molecular beam epitaxy(laser MBE)technique was utilized to grow the barium titanate(BaTiO_(3),BTO)thin films on SrTiO_(3)(100)substrates.The surface morphology of the BaTiO_(3) thin films was studied by atomic f...Laser molecular beam epitaxy(laser MBE)technique was utilized to grow the barium titanate(BaTiO_(3),BTO)thin films on SrTiO_(3)(100)substrates.The surface morphology of the BaTiO_(3) thin films was studied by atomic force microscopy(AFM).Two-and three-dimensional AFM images were obtained.The root mean square surface roughness,the height profile,the histogram and the bearing ratio of the height distributions for the BaTiO_(3) thin films were analyzed in detail.The results indicate that the laser MBE thin films exhibit an atomically smooth surface.展开更多
The polarization dependence of conduction inf ersubband transitions in GaAs/AlGaAs step multiqua.ntum well structures hasJbeen studied using infrared spectroscopy.For S-polarized 45°oblique angle incidence config...The polarization dependence of conduction inf ersubband transitions in GaAs/AlGaAs step multiqua.ntum well structures hasJbeen studied using infrared spectroscopy.For S-polarized 45°oblique angle incidence configuration with respect to sample surface normal,the transverse electric(TE)active intersubband transitions were observed.Both transverse electric and transverse magnetic(TM)active intersubband transitions were obtained in P-polarized incidence at 45°angle on sample,which shows a small energy splitting between TE and TM absorption peaks.展开更多
基金Supported by the National Basic Research Program of China under Grant No 2007CB935701.
文摘We successfully label-free and real-time detect the capture processes of human immunoglobulin G (IgG)/goat anti-human IgG and mouse IgG/goat anti-mouse IgG antigen-antibody pairs with different concentrations using the oblique-incidence reflectivity difference (OIRD) method,and obtain the interaction kinetics curves and the interaction times.The experimental results prove that the OIRD method is a promising technique for label-free and real-time detection of the biomolecular interaction processes and achieving the quantitative information of interaction kinetics.
文摘The n-type conductive BaNb_(0.3) Ti_(0.7)O_(3) thin films were grown on SrTiO_(3) (001) substrates by computer-controlled laser molecular beam epitaxy. The BaNb0.3Ti0.7O3 films with (001) orientation are epitaxially grown on SrTiO_(3) substrates, as confirmed by x-ray diffraction techniques. The root-mean-square surface roughness of the deposited thin films is measured to be 0.24 nm by atomic force microscopy. The resistivity, carrier concentration and mobility of the BaNb_(0.3)Ti_(0.7)O_(3) thin film are 5.9 × 10^(-4) Ω. cm, 1.8 × 10^(21)cm^(-3) and 10. 7cm^(2).V^(-1).s^(-1) at room temperature,respectively, which are the best values in Nb-doped BaTiO3 thin films reported so far to our knowledge.
基金Supported by the National Centre for Research and Development on Superconductor of China.
文摘A pyrometric absorption method suitable for strongly absorbing films has been developed to monitor the YBa_(2)Cu_(3)O_(7-δ)film growth.This method makes use of the temperature difference between the heater and the substrate.By deducing the absorption formula of radiation light and fitting it to the radiation intensity data measured,it is possible to monitor the film thickness and the film surface temperature during deposition.Experimental results show that this is a simple and practicable method.
基金Supported by the National Natural Science Foundation of China under Grant Nos.59392800 and 69437101the Chinese Academy of Sciences,the National Superconducting Research Center,and the Research Grant No.94-189 RG/PHYS/AS of the Third World Academy of Sciences.
文摘Laser molecular beam epitaxy(laser MBE)technique was utilized to grow the barium titanate(BaTiO_(3),BTO)thin films on SrTiO_(3)(100)substrates.The surface morphology of the BaTiO_(3) thin films was studied by atomic force microscopy(AFM).Two-and three-dimensional AFM images were obtained.The root mean square surface roughness,the height profile,the histogram and the bearing ratio of the height distributions for the BaTiO_(3) thin films were analyzed in detail.The results indicate that the laser MBE thin films exhibit an atomically smooth surface.
基金Supported by the National Natural Science Foundation of China.
文摘The polarization dependence of conduction inf ersubband transitions in GaAs/AlGaAs step multiqua.ntum well structures hasJbeen studied using infrared spectroscopy.For S-polarized 45°oblique angle incidence configuration with respect to sample surface normal,the transverse electric(TE)active intersubband transitions were observed.Both transverse electric and transverse magnetic(TM)active intersubband transitions were obtained in P-polarized incidence at 45°angle on sample,which shows a small energy splitting between TE and TM absorption peaks.
