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Influence of the cobalt concentration on optical and magnetic properties of zinc oxide

Chinese Science Bulletin 2010年第10期55卷 897-901页

作者： wang liwei,zhang fujun,xu zheng,zhao suling & lu lifang institute of optoelectronics technology,beijing jiaotong university Key Laboratory of luminescence and Optical Information (beijing jiaotong university),Ministry of Education,beijing 100044,China institute of optoelectronics technology Beijing Jiaotong University Beijing China Ministry of Education Key Laboratory of Luminescence and Optical Information (Beijing Jiaotong University) Beijing China

A series of Co-doped ZnO thin films have been prepared by direct current reactive magnetron sputtering on glass *** structural characterization by means of X-ray diffraction (XRD) and scanning electron microscopy (SEM) gave no evidence of second phase *** qualitative composition and chemical state were characterized by energy dispersive X-ray spectroscopy (EDS) and X-ray photoelectronic spectrometry (XPS),*** results confirmed that Co was incorporated as Co3+,occupying the Zn2+ sites in ZnO's wurtzite *** luminescence properties of the films were investigated by room temperature photoluminescence,and the optical properties were studied by optical *** magnetic analysis was carried out at room temperature and at 50 K by Quantum Design MPMS (SQUID) *** results showed that all the Co-doped ZnO thin films prepared by direct current magnetron sputtering were not ferromagnetic above 50 K.

关键词：氧化锌钴氧化物磁性直流反应磁控溅射 X射线光电子能谱室温光致发光扫描电子显微镜纤锌矿结构

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Scattering Inversion Study for Suspended Label-Free Lymphocytes with Complex Fine Structures

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Biomedical Engineering Frontiers 2022年第1期3卷 469-482页

作者： lu zhang Huijun wang Jianyi Liu Shuang Chen He Yang Zewen Yang Zhenxi zhang Hong zhao Li Yuan lifang Tian Bo Zhong Xiaolong Liu Xi’an jiaotong university School of Mechanical EngineeringState Key Laboratory for Manufacturing Systems EngineeringXi’an 710049China Xi’an jiaotong university Institute of Artificial Intelligence and RoboticsXi’an 710049China Xi’an jiaotong university Key Laboratory of Biomedical Information Engineering of Ministry of EducationXi’an 710049China Xi’an jiaotong university First Affiliated HospitalXi’an 710049China Xi’an jiaotong university Second Affiliated HospitalXi’an 710049China Mengchao Hepatobiliary Hospital of Fujian Medical university The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian ProvinceFuzhou 350025China

Objective and Impact *** malignant lymphocytes from normal ones is vital in pathological *** proposed an inverse light scattering(ILS)method for label-free suspended lymphocytes with complex fine structures to identify their volumes for pathological *** scattering as cell’s“fingerprint”provides valuable morphology information closely related to its biophysical ***,the detail relationships between the morphology with complex fine structures and its scattering characters are not fully *** quantitatively inverse the volumes of membrane and nucleus as the main scatterers,clinical lymphocyte morphologies were modeled combining the Gaussian random sphere geometry algorithm by 750 reconstructed results after confocal scanning,which allowed the accurate simulation to solve ILS *** complex fine structures,the specificity for ILS study was firstly discussed(to our knowledge)considering the differences of not only surface roughness,posture,but also the ratio of nucleus to the cytoplasm and refractive *** volumes of membrane and nucleus were proved theoretically to have good linear relationship with the effective area and entropy of forward scattering *** specificity deviations were less than 3.5%.Then,our experimental results for microsphere and clinical leukocytes showed the Pearson product-moment correlation coefficients(PPMCC)of this linear relationship were up to 0.9830~*** scattering inversion method could be effectively applied to identify suspended label-free lymphocytes without destructive sample pretreatments and complex experimental systems.

关键词： inverse Inversion allowed

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