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Versatile band structure and electron-phonon coupling in layered PtSe_(2) with strong interlayer interaction

Nano Research 2022年第7期15卷 6613-6619页

作者： Junbo He Xudan Zhu Weiming Liu Ertao Hu jianlu wang Rongjun Zhang Department of Optical Science and Engineering Fudan UniversityShanghai 200433China College of Electronic and Optical Engineering Nanjing University of Posts and TelecommunicationsNanjing 210023China Institute of Optoelectronics Fudan UniversityShanghai 200433China Academy for Engineering and Technology Fudan UniversityShanghai 200433China Yiwu Research Institute of Fudan University Yiwu 322000China

The large tunability in the band structure is ubiquitous in two-dimensional(2D)materials,and PtSe_(2) is not an exception,which has attracted considerable attention in electronic and optoelectronic applications due to its high carrier mobility and long-term *** dimensional dependent properties are closely related to the evolution of electronic band *** points(CPs),the extrema or saddle points of electronic bands,are the cornerstone of condensed-matter physics and fundamentally determine the optical and transport phenomena of the layered PtSe_(2).Here,we have experimentally revealed the detailed electronic structures in layered PtSe_(2),including the CPs in the Brillouin zones(BZs),by means of reflection contrast spectroscopy and spectroscopic ellipsometry(SE).There are three critical points in the BZs attributed to the excitonic transition,quasi-particle band gap,and the band nesting effect related transition,*** CPs show red-shifting trends with increasing layer number under the mechanism of strong interlayer *** have further revealed the electron–phonon(e–ph)interaction in such layered material,utilizing temperature-dependent absorbance *** strength of e–ph interaction and the average phonon energy also decline with the increasement of layer *** findings give a deep understanding to the physics of the layer-dependent evolution of the electronic structure of PtSe_(2),potentially leading to applications in optoelectronics and electronic devices.

关键词： layered transition metal dichalcogenides PtSe_(2)thin films interlayer coupling critical points electron-phonon interaction

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Anti-breast cancer effects and mechanisms of Xihuang pill on human breast cancer cell lines

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Journal of Traditional Chinese Medicine 2013年第6期33卷 770-778页

作者： Guofeng Pan Wandan wang Lan wang Fangbo Zhang Xiaojie Yin jianlu wang Rixin Liang Department of Traditional Chinese Medicine Beijing Shijitan Hospital Affiliated to Capital Medical University School of Traditional Chinese Medicine Capital Medical University Pharmacology and Pharmacokinetics Laboratory Institute of Chinese Material Medical China Academy of Chinese Medical Sciences

OBJECTIVE： To investigate the anti-breast cancer （BC） effects and mechanisms of action of Xihuang pill （XHP） by conducting in vitro experiments on hu- man BC cell lines. METHODS： Two human BC cell lines （MCF-7 and MDA- MB231） were cultured and treated with XHP. Cell viability was detected using the 3-（4, 5-Dimeth- ylthiazol-2-yl）-2, 5-diphenyltetrazolium bromide （MTT） assay. Flow cytometry was used to measure the cell cycle and apoptosis. The cell cycle was ana- lyzed with propidium iodide staining. Apoptosis was evaluated using the Annexin V-fluorescein iso- thiocyanate/propidium iodide method. Western blotting was used to analyze the expression of es- trogen receptor （ER）-α and ***： XHP had growth-inhibitory effects on MCF-7 and MDA-MB231 cells with a half-maximal inhibitory concentration （IC50） of 10.14 mg/mL （MCF-7） and 8.98 mg/mL （MDA-MB231）. Apoptosis was induced to some extent. Certain changes in the ER were caused. Upregulation of ER-a protein was found in MCF-7 cells. ER-β expression in MDA-MB231 cells was increased. Cell-cycle arrest was not observed in the two BC cell lines. ER-β ex- pression in MCF-7 cells was unchanged. No ER-a ex- pression was shown in MDA-MB231 cells. CONCLUSION： These data suggest that XHP can af- fect cell viability and cause apoptosis, but that the cell cycle is not blocked. XHP has a certain impact on ER expression, but its mechanisms of action of anti-13C effects may not be due to regulation of ER expression.

关键词： Breast neoplasms Inhibitor of apopto-sis proteins Cell cycle Apoptosis Estrogen recep-tor alpha Xihuang pill

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Protective effects of Yindanxinnaotong capsule in a rat model of myocardial ischemia/reperfusion injury

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Journal of Traditional Chinese Medicine 2014年第6期34卷 699-709页

作者： Wandan wang Lan wang Hongjun Yang jianlu wang Xiaojie Yin Haiyu Xu Long Cheng Rixin Liang Pharmacology and Pharmacokinetics Laboratory Institute of Chinese MaterialMedical China Academy of Chinese Medical Sciences Institute of Medical Plant Development Chinese Academy of Medical Sciences

OBJECTIVE: To investigate the effects of Yindanxinnaotong capsule(YDXNTC) and main components compatibility and ratios on myocardium against ischemia/reperfusion injury and the effect's underlying ***: Myocardial ischemia/reperfusion injury(MIRI) was induced by ischemia for 30 min and reperfusion for 30 min. Electrocardiogram data and coronary flow were recorded, and superoxide dismutase(SOD), malondialdehyde(MDA), lactate dehydrogenase, creatine kinase-MB, cardiac troponin T and I(cT nT, cT n I) and interleukin-1β, interleukin-8,interleukin-18(IL-1β, IL-8, IL-18) in myocardium were measured. Hypoxia/reoxygenation and hydrogen peroxide(H2O2) injury were induced by hypoxia for 3 h/reoxygenation for 2 h, and 100 μM H2O2 for 1 h, respectively, in vitro rat myocardial cells(H9c2). Cell viability, SOD, MDA, cT nT and inflamma-tory factors(IL-1β, IL-8 and IL-18) were determined,and Toll-like receptor 4(TLR-4) expression was measured by western ***: In the isolated heart experiment, elevated heart function, coronary flow and SOD levels,and decreased MDA levels and inflammatory factors were noted in the YDXNTC, main components and main components compatibility groups. Ventricular tachycardia/ventricular fibrillation occurrence decreased in the ginkgo biloba extract(GBE),and GBE and salvia miltiorrhiza ethanol extract compatibility(SM-E, GSEC) groups. Lactic dehydrogenase levels decreased in the YDXNTC and aqueous extract of salvia miltiorrhiza(SM-H) groups. Creatine kinase-MB decreased with GBE, SM-E, SM-H and GSEC treatment, and cT n I and cT nT levels decreased with GSEC. In the in vitro cell study,YDXNTC and main components ratios improved cell viability and SOD levels, and suppressed MDA,cT nT and inflammatory factors. TLR-4 expression was ***: YDXNTC and main components compatibility showed protective effects on MIRI in this rat model and in vitro study. Regulating the Toll-like receptor signaling pathway may affect the

关键词： Myocardial ischemia Reperfusion Components compatibility Yindanxinnaotong cap-sule

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A study on ionic gated MoS2 phototransistors

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Science China(Information Sciences) 2019年第12期62卷 133-140页

作者： Binmin WU Xudong wang Hongwei TANG Tie LIN Hong SHEN Weida HU Xiangjian MENG Wenzhong BAO jianlu wang Junhao CHU School of Physical Science and Technology Shanghai Tech University State Key Laboratory of Infrared Physics Shanghai Institute of Technical PhysicsChinese Academy of Sciences University of Chinese Academy of Sciences State Key Laboratory of ASIC and System School of Microelectronics Fudan University

Molybdenum disulfide（MoS2） holds great promise in the future applications of nanoelectronics and optoelectronic devices. Exploring those interesting physical properties of MoS2using a strong electric field provided by electrolyte-gel is a robust approach. Here, we fabricate an Mo S2 phototransistor gated by electrolyte-gel which is located on a fused silica substrate. Under the modulation of electrolyte-gel, the Schottky barrier between MoS2and source/drain electrodes can be widely regulated from 11 to 179 me V. The MoS2phototransistor exhibits excellent responsivity of 2.68 × 10～4 A/W and detectivity of 9.6 × 1010 Jones under visible incident light at negative gate voltage modulation. We attribute the optoelectronic performance enhancement to the Schottky barrier modulation of electrolyte-gel gating. It makes the device suitable for applications in high-sensitive photodetectors.

关键词： MoS2 phototransistor electrolyte-gel gating Schottky barrier electric double layer two-dimensional materials

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Characterization of atomic defects on the photoluminescence in two-dimensional materials using transmission electron microscope

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InfoMat 2019年第1期1卷 85-97页

作者： Jiayan Zhang Ye Yu Peng wang Chen Luo Xing Wu Ziqi Sun jianlu wang Wei Da Hu Guozhen Shen Department of Electronic Engineering Shanghai Key Laboratory of Multidimensional Information ProcessingEast China Normal UniversityShanghaiChina State Key Laboratory of Infrared Physics Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghaiChina School of Chemistry Physics and Mechanical EngineeringQueensland University of TechnologyGardens PointBrisbaneAustralia State Key Laboratory for Superlattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijingChina

Two-dimensional material(2D)that possesses atomic thin geometry and remarkable properties is a star material for the fundamental researches and advanced *** in 2D materials are critical and fundamental to understand the chemical,physical,and optical *** arises in 2D materials owing to various physical phenomena including activator/dopant-induced luminescence and defect-related emissions,and so *** the advanced transmission electron microscopy(TEM)technologies,such as aberration correction and low voltage technologies,the morphology,chemical compositions and electronic structures of defects in 2D material could be directly characterized at the atomic *** this review,we introduce the applications of state-of-the-art TEM technologies on the studies of the role of atomic defects in the photoluminescence characteristics in 2D *** challenges in spatial and time resolution are also *** is proved that TEM is a powerful tool to pinpoint the relationship between the defects and the photoluminescence characteristics.

关键词： defects optoelectronic photoluminescence transmission electron microscopy two-dimensional material

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Interface engineering of ferroelectric-gated MoS2 phototransistor

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Science China(Information Sciences) 2021年第4期64卷 166-173页

作者： Shuaiqin WU Xudong wang Wei JIANG Luqi TU Yan CHEN Jingjing LIU Tie LIN Hong SHEN Jun GE Weida HU Xiangjian MENG jianlu wang Junhao CHU State Key Laboratory of Infrared Physics Shanghai Institute of Technical PhysicsChinese Academy of Sciences University of Chinese Academy of Sciences Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences

Two-dimensional（2D） layered materials have received significant attention owing to their unique crystal structures as well as outstanding optical and electric properties in photoelectric detection. However,most 2D materials are very sensitive to the environment. Adsorbates and traps introduced during the preparation process have a negative effect on the performance of devices based on these materials. Here,we focus on a molybdenum disulfide（MoS2） phototransistor gated by ferroelectrics, and insert a hexagonal boron nitride（h-BN） layer between MoS2and the ferroelectric film to improve the interface. To clarify the role of h-BN in this device, two parallel devices are prepared on the same MoS2flake. One device is covered with h-BN, while the other is in direct contact with the ferroelectric film. The electronic and optoelectronic properties of these two devices are then measured and compared. Experimental results reveal that, compared to device without h-BN, the MoS2phototransistor with h-BN exhibits higher carrier mobility(average value: 85 cm2·V-1·s-1and highest value: 185 cm2·V-1·s-1), larger responsivity(85 A·W-1), and larger detectivity(1.76×1013Jones). Thus, this strategy is significant for the interface engineering and performance improvement of devices based on 2D materials.

关键词： 2D materials ferroelectrics MoS$_{2}$phototransistors h-BN interface engineering

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A versatile photodetector assisted by photovoltaic and bolometric effects

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Light(Science & Applications) 2020年第1期9卷 494-502页

作者： Wei Jiang Tan Zheng Binmin Wu Hanxue Jiao Xudong wang Yan Chen Xiaoyu Zhang Meng Peng Hailu wang Tie Lin Hong Shen Jun Ge Weida Hu Xiaofeng Xu Xiangjian Meng Junhao Chu jianlu wang State Key Laboratory of Infrared Physics Shanghai Institute of Technical PhysicsChinese Academy of Sciences500 Yutian RoadShanghai 200083China University of Chinese Academy of Sciences Beijing 100049China Department of Applied Physics Donghua UniversityNo.2999North Renmin RoadSongjiang DistrictShanghai 201620China

The advent of low-dimensional materials with peculiar structure and superb band properties provides a new canonical form for the development of ***,the limited exploitation of basic properties makes it difficult for devices to stand ***,we demonstrate a hybrid heterostructure with ultrathin vanadium dioxide film and molybdenum ditelluride *** dioxide is a classical semiconductor with a narrow bandgap,a high temperature coefficient of resistance,and phase *** ditelluride,a typical two-dimensional material,is often used to construct optoelectronic *** heterostructure can realize three different functional modes:(i)the p-n junction exhibits ultrasensitive detection(450 nm-2μm)with a dark current down to 0.2 pA and a response time of 17μs,(ii)the Schottky junction works stably under extreme conditions such as a high temperature of 400 K,and(iii)the bolometer shows ultrabroad spectrum detection exceeding 10μ*** flexible switching between the three modes makes the heterostructure a potential candidate for next-generation photodetectors from visible to longwave infrared radiation(LWIR).This type of photodetector combines versatile detection modes,shedding light on the hybrid application of novel and traditional materials,and is a prototype of advanced optoelectronic devices.

关键词： resistance dioxide versatile

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A novel spin-FET based on 2D antiferromagnet

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Journal of Semiconductors 2019年第2期40卷 11-12页

作者： jianlu wang National Laboratory for Infrared Physics Shanghai Institute of Technical Physics Chinese Academy of Sciences

Engineering the electronic band structure of material systems enables the unprecedented exploration of new physical properties that are absent in natural or as-synthetic *** structures of bilayer two-dimensional(2D)sy... 详细信息

关键词： In FET A novel spin-FET based on 2D antiferromagnet

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A Parallel Integration Method of Cooperative Target-Localization and Cooperative Self-localization

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Transactions of Nanjing University of Aeronautics and Astronautics 2022年第2期39卷 231-238页

作者： wang Leigang KONG Depei ZHOU Jihang wang jianlu State Key Laboratory of Complex Electromagnetic Environment Effects on Electronics and Information System Luoyang 471003P.R.China

When a group of mobile agents track a target,they can locate themselves and the target in a cooperative *** maximize the group advantage,a parallel integration strategy of cooperative target-localization(CTL)and cooperative self-localization(CSL)is ***,a global cost function containing the agents’positions and the target’s position is ***,along with the agents’positions being re-estimated during CTL,the Utransform is employed to propagate the error covariance of the position estimations among the *** simulation results show that,the proposal exploits more information for locating the target and the agents than the cases where CTL and CSL run separately,and the global optimal position estimations of the agents and the target are obtained.

关键词： cooperative self-localization cooperative target-localization non-classical multi-dimensional scaling majoring function

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Preparation of La0.67Ca0.23Sr0.1MnO3 thin films with interesting electrical and magnetic properties via pulsed-laser deposition

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Science China(Physics,Mechanics & Astronomy) 2017年第2期60卷 72-75页

作者： Shuai Xue XiaoLin Zhao jianlu wang BoBo Tian Hai Huang CaiMin Meng Lan Liu Lei Ye JingLan Sun XiangJian Meng XiaoDong Zhang JunHao Chu Department of Applied Physics Donghua University Shanghai 201620 China National Laboratory for Infrared Physics Shanghai Institute of Technical Physics Chinese Academy of Sciences Shanghai 200083 China University of Chinese Academy of Sciences Beijing 100049 China Department of Electronics Engineering The Chinese University of Hong Kong Hong Kong China School of Power and Mechanical Engineering Wuhan University Wuhan 430072 China

Manganese oxides with a perovskite-type Re_(1-x)D_xMnO_3(Re:heavy rare-earth elements,D:divalent alkali metal)structure have attracted interest because of the complex interaction between their electrons,lattices,and spins[1-5].Generally,manganese oxides with the structure Re_(1-x)D_xMnO_3 have special *** example,the half-metallic manganites,such as La_(2/3)Sr_(1/3)MnO_3 and La_(2/3)Ca_(1/3)MnO_3,wherein the conduction electrons are completely spin polarized。

关键词： La2/3Ca1/3MnO3 沉积薄膜脉冲激光磁学性能钙钛矿型锰氧化物制备电学自旋极化

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