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Review of gallium oxide based field-effect transistors and Schottky barrier diodes

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Chinese Physics B 2019年第1期28卷 65-81页

作者： Zeng Liu Pei-Gang Li Yu-Song Zhi xiao-long wang Xu-long Chu Wei-Hua Tang Laboratory of Information Functional Materials and Devices School of ScienceBeijing University of Posts and TelecommunicationsBeijing 100876China State Key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and TelecommunicationsBeijing 100876China China Aerospace Academy of Systems Science and Engineering Beijing 100048China

Gallium oxide(Ga_2O_3), a typical ultra wide bandgap semiconductor, with a bandgap of ~4.9 e V, critical breakdown field of 8 MV/cm, and Baliga's figure of merit of 3444, is promising to be used in high-power and high-voltage ***, a keen interest in employing Ga_2O_3 in power devices has been aroused. Many researches have verified that Ga_2O_3 is an ideal candidate for fabricating power devices. In this review, we summarized the recent progress of field-effect transistors(FETs) and Schottky barrier diodes(SBDs) based on Ga_2O_3, which may provide a guideline for Ga_2O_3 to be preferably used in power devices fabrication.

关键词： gallium oxide(Ga2O3) field-effect transistors(FETs) Schottky barrier diodes(SBDs)

Antigens synthesis and antibodies preparation for furazolidone and its metabolite 3-amino-2-oxazolidinone

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Chinese Chemical Letters 2010年第9期21卷 1049-1052页

作者： Hua Ping Zhu Ting Ting Liu Bing Liu Hui Ling Yin xiao long Li Li wang Shuo wang Key Laboratory of Food Nutrition and Safety (Tianjin University of Science & Technology) Ministry of Education Tianjin 300457 China

Two haptens of 3-[（5-amino-furan-2-ylmethylene）amino]oxazolidin-5-one（FZ-NH_2） and 3-{[（4-carboxyphenyl）methylene]-amino} -2-oxazolidinone（CPAOZ） were *** FZ-NH2,immunogens were prepared by glutaraldehyde and diazo salt *** CPAOZ,immunogens were connected by the methods of the active ester and mixed acid *** with the combination,indirect competitive enzyme-linked immunosorbent assay（ic-ELISA） was developed with coating antigen of FZ-NH2 -OVA via the glutaraldehyde method and immunogen of CPAOZ-KLH via active ester *** furazolidone and its metabolite AOZ（NPAOZ as derivative）,the sensitivities（IC50） were 2.0μg/L and 2.5μg/L,limits of detection（IC15） were 0.09μg/L and 0.25μg/L,respectively.A sensitive method was developed for the simultaneous determination of furazolidone in feed and its metabolite AOZ in tissue.

关键词： Furzolidone AOZ Antigen Antibody ELISA

Synthesis of a New Asymmetrical Ether Diamine with Aromatic Structure and Related Polyimide

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Chinese Chemical Letters 2006年第5期17卷 635-636页

作者： Yu SHAO Yah Feng LI xiao long wang Shu Jiang ZHAN Xin ZHAO Tao MA State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000

A new aromatic asymmetrical ether diamine, 1,4-bis（3＇,4’-diaminophenoxy）benzene 3 was synthesized in three steps, using hydroquinone as starting material. A new aromatic polyimide containing asymmetrical diaryl ether segments was prepared from the resulting diamine with 4,4＇-oxydiphthalic anhydride （ODPA） via a conventional two-step thermal or chemical imidization method. The resulting polyimide exhibits high thermal resistance, excellent solubility, film-forming capability, high mechanical strength and modulus.

关键词： Polyimide asymmetrical ether diamine aromatic polyimide.

Synthesis of a New Aromatic Dianhydride Containing Pyridine Ring and Related Polyimide

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Chinese Chemical Letters 2006年第3期17卷 305-306页

作者： xiao long wang Shu Jiang ZHANG Yan Feng LI Tao MA Yu SHAO Xin ZHAO State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical Engineering Lanzhou University Lanzhou 730000

A new aromatic dianhydride monomer containing pyridine moiety, 2,6-bis[4＇-（3＂,4＂- dicarboxyphenoxy）benzoyl]-pyridine dianhydride （Md）, was synthesized in four steps, starting from 2,6-pyridinedicarboxyl chloride. A novel pyridine-containing polyimide was prepared via polycondensation of Md with ODA by two-step method. The resulting polyimide exhibits excellent solubility, film-forming capability and high thermal resistance.

关键词： Polyimides pyridine-containing monomer synthesis aromatic dianhydride.

TfR1 Extensively Regulates the Expression of Genes Associated with Ion Transport and Immunity

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Current Medical Science 2020年第3期40卷 493-501页

作者： Nan HUANG Lei-Lei ZHAN Yi CHENG xiao-long wang Ya-xun WEI Qi wang Wen-jing LI Department of Allergy Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430030China Center for Genome Analysis ABLife Inc.Wuhan430075China Department of Oncology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430030China

Transferrin receptor 1(TfR1),encoded by the TFRC gene,is the gatekeeper of cellular iron uptake for cells.A variety of molecular mechanisms are at work to tightly regulate TfR1 expression,and abnormal TfR1 expression has been associated with various *** the current study,to determine the regulation pattern of TfR1,we cloned and overexpressed the human TFRC gene in HeLa ***-sequencing(RNA-seq)was used to analyze the global transcript levels in overexpressed(OE)and normal control(NC)samples.A total of 1669 differentially expressed genes(DEGs)were identified between OE and *** ontology(GO)analysis was carried out to explore the functions of the *** was found that multiple DEGs were associated with ion transport and ***,the regulatory network was constructed on basis of DEGs associated with ion transport and immunity,highlighting that TFRC was the node gene of the *** results together suggested that precisely controlled TfR1 expression might be not only essential for iron homeostasis,but also globally important for cell physiology,including ion transport and immunity.

关键词： transferrin receptor 1 overexpression RNA-seq differentially expressed genes ion transport cellular immunity

Synthesis and Characterization of Novel Polyimides Based on Pyridine-containing Diamine

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Chinese Chemical Letters 2005年第9期16卷 1165-1168页

作者： Shu Jiang ZHANG Yan Feng LI xiao long wang Da Xue YIN Yu SHAO Xin ZHAO College of Chemistry and Chemical Engineering State Key Laboratory of AppliedOrganic Chemistry Institute of Biochemical Engineering ＆ Environmental Technology Lanzhou University Lanzhou 730000

A new aromatic diamine monomer containing pyridine unit, 2,6-bis （4-aminophenoxy- 4＇-benzoyl）pyridine（BABP）, was synthesized in three steps, starting from 2,6-pyridinedicarboxyl chloride. A series of novel pyridine-containing polyimides were prepared v/a the polycondensation of BABP with various aromatic dianhydrides through poly（amic acid） precursors, and thermal or chemical imidization of the precursors. The polyimides exhibit desirable properties, e.g., good solubility in N-methyl-2-pyrrolidone and m-cresol, excellent thermal stability and film-forming capability, as well as high inherent viscosity, indicating high molecular weight.

关键词： Heteroaromatic polymer polyimides pyridine-containing monomer synthesis,aromatic diamine.

A Dielectric Ink Combining Acrylate and Cyanate Moieties for Inkjet 3D Printing with Good Thermal Stability

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Chinese Journal of Polymer Science 2024年第6期42卷 766-774页

作者： Yi-Xuan Li Liang-Ying Wu Yan Yang Yao-Zhong Lu Zhong-Ying Ji Yu-Xiong Guo xiao-long wang Qiao-Sheng Pu State Key Laboratory of Applied Organic Chemistry College of Chemistry and Chemical EngineeringLanzhou UniversityLanzhou730000China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsLanzhou730000China Lanzhou Traditional Chinese Medicine Hospital of Orthopedics and Traumatology Lanzhou730000China Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai Yantai Zhongke Research Institute of Advanced Materials and Green Chemical EngineeringYantai264006China

Inkjet 3D printing has potential in the additive manufacturing of electronic circuits and ***,inks that can be used for printing layers with T5%>300℃ or hardness>200 MPa have been rarely *** ester(CE)polymers have excellent thermal stability,high strength,and low shrinkage compared to other common dielectric inks for inkjet 3D printing,but cannot be quickly shaped by ultraviolet(UV)irradiation or thermal *** CEs with UV-curable monomers may be a possible way to accelerate crosslinking,but there are challenges from the adverse effects of the dilution of both *** this study,dielectric inks with acrylate and cyanate moieties were *** low viscosity and surface tension of the CE precursor(Bisphenol E cyanate ester)were combined with photocurable acrylate diluent monomers and cross-linker to realize an ink suitable for inkjet 3D *** internal dual three-dimensional cross-linked network structure resin was prepared by a combination of photocuring and thermal curing with T5%up to 326.69℃,hardness up to 431.84 MPa,dielectric constant of 2.70 at 8 GHz,and shrinkage of 1.64%.The developed dielectric inks can be applied to the 3D printing of printed circuit boards and other electronic devices that require dielectric properties.

关键词： Inkjet printing Cyanate ester resin 3D doubly cross-linked network Good thermal stability

Revisiting Newton’s rings with a plasmonic optical flat for high-accuracy surface inspection

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Light(Science & Applications) 2016年第1期5卷 459-464页

作者： Yun Zheng Jie Bian xiao-long wang Ju-Xiu Liu Peng Feng Hai-Xiong Ge Olivier JF Martin Wei-Hua Zhang College of Engineering and Applied Sciences National Laboratory of Solid State Microstructures and Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China Nanophotonics and Metrology Laboratory Swiss Federal Institute of Technology Lausanne(EPFL)Lausanne 1015Switzerland

Two parallel optical surfaces often exhibit colorful fringes along the lines of equal thickness because of the interference of *** simple phenomenon allows one to observe subwavelength corrugations on a reflective surface by simply placing on it a flat reference dielectric surface,a so-called optical flat,and inspecting the resultant interference *** this work,we extend this principle from dielectric surfaces to two-dimensional plasmonic *** couplings between an Au nanodisk array and an Au thin film were measured quantitatively using two different techniques,namely,the classical Newton’s rings method and a closed-loop nano-positioning *** high spectral sensitivity to the inter-surface distance was observed in the near-field coupling regime,where a 1-nm change in distance could alter the resonance wavelength by almost 10 nm,440 times greater than the variation in the case without near-field *** the help of a numerical fitting technique,the resonance wavelength could be determined with a precision of 0.03 nm,corresponding to a distance precision as high as 0.003 *** this effect,we demonstrated that a plasmonic nanodisk array can be utilized as a plasmonic optical flat,with which nanometer-deep grooves can be directly visualized using a low-cost microscope.

关键词： near-field optical coupling optical flat plasmonics

Variability of Young Stellar Objects in the Perseus Molecular Cloud

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Research in Astronomy and Astrophysics 2023年第7期23卷 174-196页

作者： xiao-long wang Min Fang Gregory J.Herczeg Yu Gao Hai-Jun Tian Xing-Yu Zhou Hong-Xin Zhang Xue-Peng Chen Purple Mountain Observatory Chinese Academy of SciencesNanjing 210023China University of Chinese Academy of Sciences Beijing 100049China School of Astronomy and Space Science University of Science and Technology of ChinaHefei 230026China Kavli Institute for Astronomy and Astrophysics Peking UniversityBeijing 100871China Department of Astronomy Peking UniversityBeijing 100871China Department of Astronomy Xiamen UniversityXiamen 361005China School of Science Hangzhou Dianzi UniversityHangzhou 310018China Key Laboratory for Research in Galaxies and Cosmology Department of AstronomyUniversity of Science and Technology of ChinaHefei 230026China

We present an analysis of 288 young stellar objects(YSOs)in the Perseus molecular cloud that have well defined g and r-band lightcurves from the Zwicky Transient *** the 288 YSOs,238 sources(83%of our working sample)are identified as variables based on the normalized peak-to-peak variability metric,with variability fraction of 92%for stars with disks and 77%for the diskless *** variables are classified into different categories using the quasiperiodicity(Q)and flux asymmetry(M)***-three variables are classified as strictly periodic objects that are well phased and can be attributed to spot modulated stellar *** also identify 22 bursters and 25 dippers,which can be attributed to accretion burst and variable extinction,*** with disks tend to have asymmetric and non-repeatable lightcurves,while the YSOs without disks tend to have(quasi)periodic *** periodic variables have the steepest change in g versus g-r,while bursters have much flatter changes than dippers in g versus *** and quasiperiodic variables display the lowest variability *** models suggest that the variability amplitudes of periodic variables correspond to changes of the spot coverage of 30%-40%,burster variables are attributed to accretion luminosity changes in the range of L_(acc)/L_(*)=0.1-0.3,and dippers are due to variable extinction with A_(V)changes in the range of 0.5-1.3 mag.

关键词： stars:variables:general stars:late-type stars:emission-line Be (stars:)starspots accretion accretion disks