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Super high maximum on-state currents in 2D transistors

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Journal of Semiconductors 2022年第12期43卷 9-11页

作者： Xiaotian Sun Qiuhui Li Ruge Quhe Yangyang Wang jing lu College of Chemistry and Chemical Engineering and Henan Key Laboratory of Function-Oriented Porous MaterialsLuoyang Normal UniversityLuoyang 471934China State Key Laboratory of Information Photonics and Optical Communications and School of Science Beijing University of Posts and TelecommunicationsBeijing 100876China State Key Laboratory for Mesoscopic Physics and School of Physics Peking UniversityBeijing 100871China Qian Xuesen Laboratory of Space Technology China Academy of Space TechnologyBeijing 100094China Collaborative Innovation Center of Quantum Matter Beijing 100871China Beijing Key Laboratory for Magnetoelectric Materials and Devices(BKL-MEMD) Peking UniversityBeijing 100871China Peking University Yangtze Delta Institute of Optoelectronics Nantong 226010China Key Laboratory for the Physics and Chemistry of Nanodevices Peking UniversityBeijing 100871China

Two-dimensional(2D)materials have been recognized as a type of potential channel material to replace silicon in future field-effect transistors(FETs)by the International Technology Roadmap for Semiconductors(ITRS)and its succesor the International Roadmap for Devices and Systems(IRDS)[1−4].Substantial first principle quantum transport simulations have predicted that many 2D transistors,including those with MoS2,WSe2,phosphorene,and Bi2O2Se channels,own excellent device performance and are able to extend Moore’s law down to the sub-10 nm scale[4].

关键词： transistors replace state

MdSWEET17, a sugar transporter in apple, enhances drought tolerance in tomato

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Journal of Integrative Agriculture 2019年第9期18卷 2041-2051页

作者： lu jing Sun Mei-hong MA Qi-jun KANG Hui LIU Ya-jing HAO Yu-jin YOU Chun-xiang National Key Laboratory of Crop Biology National Research Center for Apple Engineering and TechnologyCollege of Horticulture Science and EngineeringShandong Agricultural UniversityTai’an 271018P.R.China Institute of Plant Biotechnology College of Life SciencesShanghai Normal UniversityShanghai 200234P.R.China

Sugars are important energy source and signaling molecule in plant,and sugar transporters such as SWEET(sugars will eventually be exported transporters)play important roles in plant growth and development as well as biotic and abiotic *** this study,a gene named MdSWEET17 was isolated from apple(Malus×domestic).Expression analysis suggested that MdSWEET17 expressed in all tested tissues(root,stem,leaf,flower and fruit)and the transcript levels were ***,MdSWEET17 transgenic tomatoes and wild type were treated with *** results showed transgenic lines had higher drought tolerance and accumulated more *** together,these findings indicated that MdSWEET17 take part in drought stress response and the regulation of fructose.

关键词： apple MdSWEET17 drought soluble sugar tomato

C-reactive protein as a non-linear predictor of prolonged length of intensive care unit stay after gastrointestinal cancer surgery

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World Journal of Clinical Cases 2022年第31期10卷 11381-11390页

作者： Ya-Min Yan Jian Gao Pei-Li Jin jing-jing lu Zheng-Hong Yu Yan Hu Department of Nursing Zhongshan HospitalFudan UniversityShanghai 200032China Department of Nutrition Zhongshan HospitalFudan UniversityShanghai 200032China Center of Clinical Epidemiology and Evidence-based Medicine Fudan UniversityShanghai 200032China

BACKGROUND The relationship between C-reactive protein(CRP)levels and prolonged intensive care unit(ICU)length of stay(LoS)has not been well *** To explore the association between CRP levels at ICU admission and prolonged ICU LoS in gastrointestinal cancer(GC)patients after major *** A retrospective study was performed to quantify serum CRP levels and to establish their association with prolonged ICU LoS(≥72 h)in GC patients admitted to the *** and multivariate regression analyses were conducted,and restricted cubic spline curves with four knots(5%,35%,65%,95%)were used to explore non-linearity *** A total of 408 patients were *** them,83(20.3%)patients had an ICU LoS longer than 72 *** levels were independently associated with the risk of prolonged ICU LoS[odds ratio(OR)1.47,95%confidence interval(CI)1.00–2.17].Restricted cubic spline analysis revealed a non-linear relationship between CRP levels and OR for the prolonged ICU LoS(P=0.035 for nonlinearity).After the cut-off of 2.6(log transformed mg/L),the OR for prolonged ICU LoS significantly increased with CRP *** adjusted regression coefficient was 0.70(95%CI 0.31–1.57,P=0.384)for CRP levels less than 2.6,whereas it was 2.43(95%CI 1.39–4.24,P=0.002)for CRP levels higher than *** Among the GC patients,CRP levels at ICU admission were non-linearly associated with prolonged ICU LoS in *** admission CRP level>2.6(log transformed mg/L)was associated with increased risk of prolonged ICU LoS.

关键词： C-reactive protein Prolonged ICU LoS Predictor Gastrointestinal cancer Intensive care unit

Extraction(DSX) from Erigeron breviscapus modulates outward potassium currents in rat retinal ganglion cells

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International Journal of Ophthalmology(English edition) 2015年第6期8卷 1101-1106页

作者： Shuo Yin Zhong-Feng Wang Jun-Guo Duan lu Ji Xue-jing lu Key Laboratory for Visual Function and Ophthalmopathy Chengdu University of Traditional Chinese Medicine Institutes of Brain Science Fudan University

AIMTo investigate the effect of DSX, an active component extracted from Erigeron breviscapus, on the voltage-gated outward K+ channel currents in rat retinal ganglion cells (RGCs) by using electrophysiological method, and to explore the possible mechanisms of DSX on optic nerve *** K+ currents were recorded by using whole-cell patch-clamp techniques on acutely isolated rat RGCs. Outward K+ currents were induced by a series of depolarizing voltage pulses from a holding potential of -70 mV to +20 mV in an increment of 10 *** application of DSX voltage-dependently suppressed both the steady-state and peak current amplitudes of outward K+ currents in rat RGCs. Furthermore, DSX reversibly and dose-dependently inhibited the amplitudes of outward K+ currents of the cells. At +20 mV membrane potential DSX at the concentrations of 0.02 g/L and 0.05 g/L showed no significant effects on the currents. In contrast, DSX at higher concentrations (0.1 g/L, 0.2 g/L and 0.5 g/L) significantly suppressed the current *** results suggest that DSX reversibly and dose-dependently suppress outward K+ channel currents in rat RGCs, which may be one of the possible mechanisms underlying Erigeron breviscapus prevents vision loss and RGC damage caused by glaucoma.

关键词： Erigeron breviscapus retinal ganglion cells potassium channel

Magnetism in Carbon Nanoscrolls: Quasi-Half-Metals and Half-Metals in Pristine Hydrocarbons

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Nano Research 2009年第11期2卷 844-850页

作者： Lin Lai jing lu lu Wang Guangfu luo jing Zhou Rui Qin Yu Chen Hong Li Zhengxiang Gao Guangping Li Wai Ning Mei Yutaka Maeda Takeshi Akasaka and Stefano Sanvito State Key Laboratory for Mesoscopic Physics and Department of Physics Peking UniversityBeijing 100871China Department of Physics University of Nebraska at OmahaOmahaNebraska 68182-0266USA SICAS Center Lee HallSUNY OneontaOneontaNY 13820USA Department of Chemistry Tokyo Gakugei UniversityTokyo 184-8501Japan PRESTO Japan Science and Technology Agency4-1-8 Honcho KawagushiSaitamaJapan Center for Tsukuba Advanced Research Alliance University of TsukubaIbaraki 305-8577Japan School of Physics and CRANN Trinity CollegeDublin 2Ireland

A magnetic ground state is revealed for the first time in zigzag-edged carbon nanoscrolls(ZCNSs)from spin-unrestricted density functional theory *** their flat counterpart-zigzag-edged carbon nanoribbons,which are semiconductors with spin-degenerate electronic structure-ZCNSs show a variety of magnetic configurations,namely spin-selective semiconductors,metals,semimetals,quasi-half-metals,and *** the best of our knowledge,this is the first discovery of quasi-half-metals and half-metals in a pure hydrocarbon without resort to an external electric *** addition,we calculated the spin-dependent transportation of the semiconducting ZCNSs with 12 and 20 zigzag chains,and found that they are 13% and 17% at the Fermi level,respectively,suggesting that ZCNS can be an effective spin filter.

关键词： Carbon nanoscrolls quasi-half-metals half-metals graphene spin-selective spin filter

Template Synthesis and Characterization of Cu2O/TiO2 Coaxial Nanocable for Photocatalysis

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Chemical Research in Chinese Universities 2015年第5期31卷 846-850页

作者： WANG Hongzhi LIU Ning lu jing YAO Suwei JIANG Shisheng ZHANG Weiguo Department of Applied Chemistry School of Chemical Engineering and Technology Tianjin University Tianjin 300072 P. R. China

Coaxial nanocable consisted of p-type Cu2O nanowires and n-type TiO2 nanotubes arrays was prepared in the porous anodic aluminum oxide（AAO） template via the sol-gel method and subsequent electrodeposition method. X-ray diffraction analysis identified an anatase structure of the TiO2 nanotubes and cubic structure of the Cu2O nanowires. The obtained samples were also characterized by scanning electron microscopy（SEM）, transmission electron microscopy（TEM） and energy dispersive X-ray spectroscopy（EDS）. The diffrence of open circuit potential of the coaxial nanocable electrode was larger than that of the TiO2 nanotubes electrode under ultraviolet illumination, which means doping with Cu2O could improve the photovoltage effectively. Meanwhile, nanocable arrays exhibited a high activity for photodegrading Rhodamine B under Xe lamp irradiation and the photocatalysis degradation efficiency was up to 98.69% after degradation for 7 h. The enhanced photocatalytic activity could be attributed to the high migration efficiency of photoinduced electrons, which may suppress the charge recombination effectively.

关键词： TiO2 Cu2O Coaxial nanocable Heterojunction Photocatalysis

Spatial Dependent Spontaneous Emission of an Atom in a Semi-Infinite Waveguide of Rectangular Cross Section

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Communications in Theoretical Physics 2018年第1期69卷 59-67页

作者： Hai-Xi Song Xiao-Qi Sun jing lu Lan Zhou Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education Department of Physics and Synergetic Innovation Center of Quantum Effects and Applications Hunan Normal University Changsha 410081 China

We study a quantum electrodynamics(QED) system made of a two-level atom and a semi-infinite rectangular waveguide, which behaves as a perfect mirror in one end. The spatial dependence of the atomic spontaneous emission has been included in the coupling strength relevant to the eigenmodes of the waveguide. The role of retardation is studied for the atomic transition frequency far away from the cutoff frequencies. The atom-mirror distance introduces different phases and retardation times into the dynamics of the atom interacting resonantly with the corresponding transverse modes. It is found that the upper state population decreases from its initial as long as the atom-mirror distance does not vanish, and is lowered and lowered when more and more transverse modes are resonant with the atom. The atomic spontaneous emission can be either suppressed or enhanced by adjusting the atomic location for short retardation *** are partial revivals and collapses due to the photon reabsorbed and re-emitted by the atom for long retardation time.

关键词： quantum optics waveguide spontaneous emission retardation

Hole-pinned defect-dipoles induced colossal permittivity in Bi doped SrTiO3 ceramics with Sr deficiency

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Journal of Materials Science & Technology 2020年第9期44卷 54-61页

作者： Yulong Qiao Weili Li Yulei Zhang lu jing Chang Gao Wenping Cao Dan Xu Weidong Fei School of Materials Science and Engineering Harbin Institute of TechnologyHarbin150001China National Key Laboratory of Science and Technology on Precision Heat Processing of Metals Harbin Institute of TechnologyHarbin150001China School of Light Industry Harbin University of CommerceHarbin150028China Key Laboratory of Quantum Manipulation&Control of Heilongjiang Province Harbin University of Science and TechnologyHarbin150080China State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin150001China

Bi doped SrTiO3 ceramics with Sr deficiency,***1-1.5xBixTiO3(x=0,0.01,0.05,0.1),were prepared via conventional solid-state reaction route.A colossal permittivity(CP)over 104 with low dielectric loss less than 0.05wasobtained in x=0.05 Sr1-1.5xBixTiO3 *** addition,the dielectric constant is maintained at a value greater than 104 in the range of 102-105 Hz and almost frequency *** structure analysis and density functional theory calculations suggest that the Bi·Sr-V"Sr-Bi·Sr defect complex with hole-pinned defect-dipoles maybe responsible for the high-performance CP *** work gives a new way to achieve high performance CP materials in ABO3 perovskite ceramics.

关键词： Bi doped SrTiO3 Sr deficiency Colossal permittivity Low dielectric loss

Device performance limit of monolayer SnSe_(2) MOSFET

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Nano Research 2022年第3期15卷 2522-2530页

作者： Hong Li Jiakun Liang Qida Wang Fengbin Liu Gang Zhou Tao Qing Shaohua Zhang jing lu College of Mechanical and Material Engineering North China University of TechnologyBeijing 100144China Beijing Key Laboratory of Long-life Technology of Precise Rotation and Transmission Mechanisms Beijing Institute of Control EngineeringBeijing 100094China State Key Laboratory of Mesoscopic Physics and Department of Physics Peking UniversityBeijing 100871China Collaborative Innovation Center of Quantum Matter Beijing 100871China Peking University Yangtze Delta Institute of Optoelectronics Nantong 226000China

Two-dimensional(2D)semiconductors are attractive channels to shrink the scale of field-effect transistors(FETs),and among which the anisotropic one is more advantageous for a higher on-state current(I_(on)).Monolayer(ML)SnSe_(2),as an abundant,economic,nontoxic,and stable two-dimensional material,possesses an anisotropic electronic ***,we study the device performances of the ML SnSe_(2) metal-oxide-semiconductor FETs(MOSFETs)and deduce their performance limit to an ultrashort gate length(L_(g))and ultralow supply voltage(V_(dd))by using the ab initio quantum transport *** ultrahigh I_(on) of 5,660 and 3,145µA/µm is acquired for the n-type 10-nm-L_(g) ML SnSe_(2) MOSFET at V_(dd)=0.7 V for high-performance(HP)and low-power(LP)applications,***,until L_(g) scales down to 2 and 3 nm,the MOSFETs(at V_(dd)=0.65 V)surpass I_(on),intrinsic delay time(τ),and power-delay product(PDP)of the International Roadmap for Device and Systems(IRDS,2020 version)for HP and LP devices for the year ***,the 5-nm-L_(g) ML SnSe_(2) MOSFET(at V_(dd)=0.4 V)fulfills the IRDS HP device and the 7-nm-L_(g) MOSFET(at V_(dd)=0.55 V)fulfills the IRDS LP device for the year 2034.

关键词： monolayer(ML)SnSe_(2) anisotropic metal-oxide-semiconductor field-effect transistor(MOSFET) device performance limit ab initio transport simulation