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Two-Dimensional Tellurium:Progress,Challenges,and Prospects

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Nano-Micro Letters 2020年第8期12卷 82-115页

作者： zhe shi Rui Cao Karim Khan Ayesha Khan Tareen Xiaosong Liu Weiyuan Liang Ye Zhang Chunyang Ma Zhinan Guo Xiaoling Luo Han Zhang Institute of Microscale Optoelectronics International Collaborative Laboratory of 2D Materials for Optoelectronics Science and TechnologyKey Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceCollege of Physics and Optoelectronic EngineeringShenzhen Key Laboratory of Micro-Nano Photonic Information TechnologyGuangdong Laboratory of Artificial Intelligence and Digital Economy(SZ)Shenzhen UniversityShenzhen 518060GuangdongPeople’s Republic of China Department of Ophthalmology Shenzhen People’s HospitalSecond Clinical Medical College of Jinan UniversityFirst Affiliated Hospital of Southern University of Science and TechnologyShenzhen 518020GuangdongPeople’s Republic of China School of Electrical Engineering and Intelligentization Dongguan University of TechnologyDongguan 523808GuangdongPeople’s Republic of China

Since the successful fabrication of two-dimensional(2D)tellurium(Te)in 2017,its fascinating properties including a thickness dependence bandgap,environmental stability,piezoelectric effect,high carrier mobility,and photoresponse among others show great potential for various *** include photodetectors,field-effect transistors,piezoelectric devices,modulators,and energy harvesting ***,as a new member of the 2D material family,much less known is about 2D Te compared to other 2D *** by this lack of knowledge,we review the recent progress of research into 2D Te ***,we introduce the background and motivation of this ***,the crystal structures and synthesis methods are presented,followed by an introduction to their physical properties and ***,the challenges and further development directions are *** believe that milestone investigations of 2D Te nanoflakes will emerge soon,which will bring about great industrial revelations in 2D materials-based nanodevice commercialization.

关键词： 2D materials Tellurium Photodetectors Solar cells Energy harvesting Logic gate and circuits

Observation of transition from superfluorescence to polariton condensation in CsPbBr3 quantum dots film

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Light(Science & Applications) 2024年第2期13卷 316-324页

作者： Danqun Mao Linqi Chen zheng Sun Min Zhang zhe-Yu shi Yongsheng Hu Long Zhang Jian Wu Hongxing Dong Wei Xie Hongxing Xu State Key Laboratory of Precision Spectroscopy East China Normal UniversityShanghai 200241China Key Laboratory of Materials for High-Power Laser Shanghai Institute of Optics and Fine MechanicsChinese Academy of Sciences201800 ShanghaiChina Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuanShanxi 030006China Chongqing Key Laboratory of Precision Optics Chongqing Institute of East China Normal UniversityChongqing 401121China CAS Center for Excellence in Ultraintense Laser Science Shanghai 201800China School of Physics and Technology Center for Nanoscience and NanotechnologyWuhan UniversityWuhan 430072China

The superfluorescence effect has received extensive attention due to the many-body physics of quantum correlation in dipole gas and the optical applications of ultrafast bright radiation field based on the cooperative quantum ***,we demonstrate not only to observe the superfluorescence effect but also to control the cooperative state of the excitons ensemble by externally applying a regulatory dimension of coupling light fields.A new quasi-particle called cooperative exciton-polariton is revealed in a light-matter hybrid structure of a perovskite quantum dot thin film spin-coated on a Distributed Bragg *** the nonlinear threshold,polaritonic condensation occurs at a nonzero momentum state on the lower polariton branch owning to the vital role of the synchronized *** phase transition from superfluorescence to polariton condensation exhibits typical signatures of a decrease of the linewidth,an increase of the macroscopic coherence as well as an accelerated radiation decay *** findings are promising for opening new potential applications for super-brightness and unconventional coherent light sources and could enable the exploitation of cooperative effects for quantum optics.

关键词： quantum condensation polar

NUMERICAL SIMULATION OF NON-LINEAR STERN WAVES

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Journal of Hydrodynamics 1990年第3期2卷 45-51页

作者： Wang De-guan Cai Hong-xian Wang shi-zhe Hohai University,Nanjing 210024,P.R.China

This paper deals with the 2—D numerical simulation of non-linear waves behind the stern of a flat-bottomed *** fluid is assumed inviscid and *** non-linear dynamic and kinematic boundary condi- tions are applied on free surface,and suitable radiation condition is applied at outflow ***-dependent stream functions are used as the dependent variables to approach the steady state *** difference meth- ods and body-fitted coordinates are employed to obtain the numerical *** tests with a schematized flat-bottomed ship model are performed to validate the computational *** from both computations and experiments seem to be in reasonable agreement.

关键词： NUMERICAL SIMULATION OF NON-LINEAR STERN WAVES

Expression and Clinical Significance of CMTM6 and PD-L1 in Colorectal Cancer

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Proceedings of Anticancer Research 2024年第3期8卷 138-143页

作者： zhe shi Liyuan Zhou Affiliated Hospital of Hebei Engineering University Handan 056000Hebei ProvinceChina

Objective: To study the expression of CMTM6 in colorectal cancer tissues and explore its relationship with tumor stage, lymph node metastasis, and prognosis. Methods: All patients underwent surgical resection and histopathological examination, and the collected tissue specimens were pathologically classified and divided into 41 cases in the cancer group and 75 cases in the paracancerous group to observe and analyze the expression of CMTM6 and PD- L1. Results: There was no statistically significant difference in the comparison of gender, age, disease duration, and other data between the two groups (P > 0.05);the high expression rate of CMTM6 in the tissues of the cancer group and the 2 groups of the paracarcinoma group was 82.93% and 1.33%, respectively, with statistically significant differences (P ship between high expression of CMTM6 and PD-L1 and tumor diameter, differentiation degree, distant metastasis, and lymphatic metastasis was not statistically significant when compared between groups (P > 0.05). Conclusion: CMTM6 and PD-L1 are one of the factors predicting poor prognosis of colorectal cancer, and can be used as one of the reference indexes for treatment selection of colorectal cancer patients.

关键词： CMTM6 PD-L1 Colorectal cancer

Raw Trajectory Rectification via Scene-Free Splitting and Stitching

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Journal of Computer Science & Technology 2015年第2期30卷 364-372页

作者：郭春超胡晓军赖剑煌石世昌陈世哲 School of Information Science and Technology Sun Yat-sen University Guangzhou 510006 China

Trajectories carry rich motion cues and thus have been leveraged to many high-level computer vision tasks. Due to the easy implementation of simple trackers, most previous work on trajectory-based applications utilizes raw tracking outputs without explicitly considering tracking errors. Reliable trajectories are prerequisite for modeling and recognizing high-level behaviors. Therefore, this paper tackles such problems by rectifying raw trajectories, which aims to post-process existing trajectories. Our approach firstly splits them into short tracks, and then infers identity ambiguity to remove unqualified detection responses. At last, short tracks are stitched via maximum bipartite graph matching. This post- processing is completely scene-free. Results of trajectory rectification and their benefits are both evaluated on two challenging datasets. Results demonstrate that rectified trajectories are conducive to high-level tasks and the proposed approach is also competitive with state-of-the-art multi-target tracking methods.

关键词： raw trajectory rectification trajectory post-processing identity ambiguity multi-target tracking activity classification

Ecological study of cave nectar bats reveals low risk of direct transmission of bat viruses to humans

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Zoological Research 2022年第4期43卷 514-522页

作者： Kai Zhao Wei Zhang Bei Li shi-zhe Xie Fan Yi Ren-Di Jiang Yun Luo Xiang-Yang He Yun-Zhi Zhang zheng-Li shi Li-Biao Zhang Xing-Lou Yang CAS Key Laboratory of Special Pathogens and Biosafety Wuhan Institute of VirologyChinese Academy of SciencesWuhanHubei 430071China University of Chinese Academy of Sciences Beijing 100049China Guangdong Key Laboratory of Animal Conservation and Resource Utilization Guangdong Public Laboratory of Wild Animal Conservation and UtilizationInstitute of ZoologyGuangdong Academy of SciencesGuangzhouGuangdong 510260China School of Public Health Dali UniversityDaliYunnan 671003China

Bats are reservoirs of various *** widely distributed cave nectar bat(Eonycteris spelaea)is known to carry both filoviruses and ***,the potential transmission of theses bat viruses to humans is not fully *** this study,we tracked 16 *** bats in Mengla County,Yunnan Province,China,using miniaturized GPS devices to investigate their movements and potential contact with ***,to determine the prevalence of coronavirus and filovirus infections,we screened for the nucleic acids of the Měnglàvirus(MLAV)and two coronaviruses(GCCDC1-CoV and HKU9-CoV)in anal swab samples taken from bats and for antibodies against these viruses in human serum *** of the serum samples were found to contain antibodies against the bat *** GPS tracking results showed that the bats did not fly during the daytime and rarely flew to residential *** foraging range of individual bats also varied,with a mean cumulative nightly flight distance of 25.50 km and flight speed of up to 57.4 km/*** together,these results suggest that the risk of direct transmission of GCCDC1-CoV,HKU9-CoV,and MLAV from *** bats to humans is very low under natural conditions.

关键词： Bats Eonycteris spelaea GPS tracking GCCDC1-CoV HKU9-CoV Měnglàvirus

Noninvasive ultrasound deep brain stimulation of nucleus accumbens induces behavioral avoidance

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Science China(Life Sciences) 2020年第9期63卷 1328-1336页

作者： Lili Niu Yanchen Guo zhengrong Lin zhe shi Tianyuan Bian Lin Qi Long Meng Anthony AGrace Hairong zheng Ti-Fei Yuan Paul C.Lauterbur Research Center for Biomedical Imaging Institute of Biomedical and Health EngineeringShenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China Shanghai Key Laboratory of Psychotic Disorders Shanghai Mental Health CenterShanghai Jiao Tong University School of MedicineShanghai 200030China Key Laboratory for Quality Evaluation of Bulk Herbs of Hunan Province Hunan University of Chinese MedicineChangsha 410208China College of Medicine and Biological Information Engineering Northeastern UniversityShenyang 110016China Departments of Neuroscience Psychiatry and PsychologyUniversity of PittsburghPittsburghPA 15260USA Co-innovation Center of Neuroregeneration Nantong UniversityNantong 226001China

Ultrasound stimulation is an emerging noninvasive option in treating neuropsychiatric disorders. The present study investigates the behavioral alterations resulting from ultrasound stimulation on the nucleus accumbens(NAc) in freely moving mice. Our results show that an acute ultrasound stimulation on the NAc, rather than the visual cortex or auditory cortex, led to a pronounced avoidance behavior, while repeated NAc ultrasound stimulation resulted in an obvious conditioned place aversion with changes in synaptic protein(Glu A1/2 subunit) expression. Notably, NAc ultrasound stimulation suppressed the morphine-induced conditioned place preference. The results provide evidence that NAc ultrasound stimulation can be applied as a potential noninvasive therapeutic option in treating psychiatric disorders.

关键词： ultrasound nucleus accumbens addiction synaptic plasticity brain stimulation

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级联型逆变器的一种新型SVPWM方法

电工技术学报 2005年第10期20卷 30-34,97页

作者：史喆石新春东北电力科学研究院有限公司沈阳110006 华北电力大学电气工程学院保定071003

在有高性能调速要求的场合需要矢量控制、直接转矩控制等电机控制方法,级联型逆变器应用电压空间矢量脉宽调制(SVPWM)技术可以实现对电机的高性能控制。随着电平数的增加,电压空间矢量数急剧增多,又存在着冗余开关状态,造成SVPWM算法过... 详细信息

在有高性能调速要求的场合需要矢量控制、直接转矩控制等电机控制方法,级联型逆变器应用电压空间矢量脉宽调制(SVPWM)技术可以实现对电机的高性能控制。随着电平数的增加,电压空间矢量数急剧增多,又存在着冗余开关状态,造成SVPWM算法过于复杂,难以应用于实际系统。本文提出了一种基于两电平SVPWM算法的新型多电平SVPWM方法,并通过Matlab6.1的系统仿真验证了其正确性和有效性。

关键词： H桥级联多电平电压空间矢量脉宽调制

Electrophoretic-deposited HAP nano-layer as a QCM-D sensor coating:effects of suspension concentration and electric-field strength

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Biosurface and Biotribology 2018年第3期4卷 79-84页

作者： Liang zheng Wei Gong Yue Tang Genlei Ma Jing zheng shi-zhe Chen Wei-hua Li Shandong Provincial Key Laboratory of Marine Monitoring Instrument and Equipment Technology Institute of Oceanographic InstrumentationQilu University of Technology(Shandong Academy of Sciences)QingdaoPeople's Republic of China Key Laboratory of Advanced Technologies of Materials Tribology Research InstituteMinistry of EducationSouthwest Jiaotong UniversityChengdu 610031People's Republic of China Key Laboratory of Marine Environmental Corrosion and Bio fouling Institute of OceanologvChinese Academy of SciencesQingdao 266071People's Republic of China

This study investigates the fabrication of hydroxyapatite(HAP)nano-coating on a gold-quartz crystal sensor used for quartz crystal microbalance with dissipation(QCM-D)measur ement using an electr ophoretic deposition *** morphology and thickness of the HAP coating are examined via scanning electron microscopy and nano-indention *** repeatability is verified via QCM-D *** show that electrophor etic deposition with ultr asonic treatment is feasible and cost-effective for fabricating nano-thick HAP coatings on a QCM-D gold-quartz crystal sensor *** suspension concentration and electric-field str ength influence the compactness of HAP *** exists a non-linear re lationship between HAP coating compactness and the suspension concentration/electric-field *** the HAP suspension concentration is 30 g/and the applied electric-field strength is 150 V/cm,the HAP coating on the QCM-D gold-quartz crystal sensor surface is uniform and compact with a thickness of 35 nm and is tightly bonded to the sensor *** obtained HAP-coated sensor is thus suitable for QCM-D measurement.

关键词： coating strength quartz