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Revealing the A1g-type strain effect on superconductivity and nematicity in FeSe thin flake

Chinese Physics B 2021年第9期30卷 56-61页

作者： Zhaohui Cheng Bin Lei Xigang Luo jianjun Ying Zhenyu Wang tao Wu Xianhui Chen CAS Key Laboratory of Strongly-coupled Quantum Matter Physics Department of PhysicsUniversity of Science and Technology of ChinaHefei 230026China Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of ChinaHefei 230026China CAS Center for Excellence in Superconducting Electronics(CENSE) Shanghai 200050China CAS Center for Excellence in Quantum Information and Quantum Physics Hefei 230026China Collaborative Innovation Center of Advanced Microstructures Nanjing UniversityNanjing 210093China

The driving mechanism of nematicity and its twist with superconductivity in iron-based superconductors are still under ***,a dominant B1g-type strain effect on superconductivity is observed in underdoped iron-pnictides superconductors Ba(Fe_(1-x)Co_(x))_(2)As_(2),suggesting a strong interplay between nematicity and *** the long-range spin order is absent in FeSe superconductor,whether a similar strain effect could be also observed or not is an interesting ***,by utilizing a flexible film as substrate,we successfully achieve a wide-range-strain tuning of FeSe thin flake,in which both the tensile and compressive strain could reach up to~0.7%,and systematically study the strain effect on both superconducting and nematic transition(T_(c)and Ts)in the FeSe thin *** results reveal a predominant A1g-type strain effect on T_(c).Meanwhile,Ts exhibits a monotonic anti-correlation with T_(c)and the maximum T_(c)reaches to 12 K when Ts is strongly suppressed under the maximum compressive ***,in comparison with the results in the underdoped Ba(Fe_(1-x)Co_(x))_(2)As_(2),the absence of B1g-type strain effect in FeSe further supports the role of stripe-type spin fluctuations on *** addition,our work also supports that the orbital degree of freedom plays a key role to drive the nematic transition in FeSe.

关键词： iron-based superconductors superconductivity electronic nematicity strain effect

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A Review of the Obama Administration's Taiwan Policy

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Contemporary International Relations 2014年第1期24卷 92-113,5页

作者： tao Wenzhao Hong jianjun the Chinese Academy of Social Sciences

Since May 2008, relations across the Taiwan Strait have experienced a ＇historical turning point. The two sides of the strait have tided over a ＂high-risk＂ period and embarked upon a path of peaceful development and benign interaction. When the Obama administration came to power in January 2009, the new situation in cross-straits relations had already taken hold. By then,

关键词：政府两岸关系台湾海峡海峡两岸

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Integration of micro-supercapacitors with triboelectric nanogenerators for a flexible self-charging power unit

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Nano Research 2015年第12期8卷 3934-3943页

作者： jianjun Luo Feng Ru Fan tao Jiang Zhiwei Wang Wei Tang Cuiping Zhang Mengmeng Liu Guozhong Cao Zhong Lin Wang Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences Beijing 100083 China Collaborative Innovation Center of Chemistry for Energy Materials College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China Department of Materials Science and Engineering University of Washington Seattle Washington 98195 USA School of Material Science and Engineering Georgia Institute of Technology Atlanta Georgia 30332 USA

The rapid development of portable and wearable electronic devices has increased demand for flexible and efficient energy harvesting and storage units. Conventionally, these are built and used separately as discrete components. Herein, we propose a simple and cost-effective laser engraving technique for fabricating a flexible self-charging micro-supercapacitor power unit （SCMPU）, by integrating a triboelectric nanogenerator （TENG） and a micro-supercapacitor （MSC） array into a single device. The SCMPU can be charged directly by ambient mechanical motion. We demonstrate the ability of the SCMPU to continuously power light-emitting diodes and a commercial hygrothermograph. This inves- tigation may promote the development of sustainable self-powered systems and provide a promising new research application for supercapacitors.

关键词： energy harvesting energy storage triboelectric nanogenerator(TENG) micro-supercapacitor self-charging

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The Intrinsically Disordered Protein BKI1 Is Essential for Inhibiting BRI1 Signaling in Plants

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Molecular Plant 2015年第11期8卷 1675-1678页

作者： jianjun Jiang tao Wang Zhihua Wu Jie Wang Chi Zhang Haijiao Wang Zhi-Xin Wang Xuelu Wang State Key Laboratory of Genetic Engineering and Department of Genetics School of Life Sciences Fudan University Shanghai 200438 China College of Life Science and Technology Huazhong Agricultural University Wuhan 430070 China MOE Key Laboratory for Protein Science School of Life Sciences Tsinghua University Beijing 100084 China

Dear Editor,Brassinosteroids （BRs） are a class of essential polyhydroxylated steroid hormones regulating plant growth and development, and their responses to environmental cues （Clouse, 2011 ; Yang et al., 2011）. BRs are perceived at the plasma membrane by a receptor complex, which consists of two leucine-rich receptor-like kinases （LRR-RLKs）, BRASSINOSTEROID INSENSITIVE 1 （BRI1） and BRI1-ASSOCIATED RECEPTOR KINASE 1 （BAK1）.

关键词： expression thousands activation

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Enhanced Protective Efficacy of H5 Subtype Influenza Vaccine with Modification of the Multibasic Cleavage Site of Hemagglutinin in Retroviral Pseudotypes

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Virologica Sinica 2013年第3期28卷 136-145页

作者： Ling tao jianjun Chen Jin Meng Yao Chen Hongxia Li Yan Liu Zhenhua Zheng Hanzhong Wang State Key Laboratory of Virology Wuhan Institute of Virology Chinese Academy of Sciences Chongqing Academy of Chinese Materia Medica

Traditionally, the multibasic cleavage site （MBCS） of surface protein H5-hemagglutinin （HA） is converted to a monobasic one so as to weaken the virulence of recombinant H5N1 influenza viruses and to produce inactivated and live attenuated vaccines. Whether such modification benefits new candidate vaccines has not been adequately investigated. We previously used retroviral vectors to generate wtH5N1 pseudotypes containing the wild-type HA （wtH5） from A/swine/Anhui/ca/2004 （H5N1） virus. Here, we generated mtH5N1 pseudotypes, which contained a mutant-type HA （mtH5） with a modified monobasic cleavage site. Groups of mice were subcutaneously injected with the two types of influenza pseudotypes. Compared to the group immunized with wtH5N1 pseudotypes, the inoculation of mtH5N1 pseudotypes induced significantly higher levels of HA specific IgG and IFN-y in immunized mice, and enhanced protection against the challenge of mouse-adapted avian influenza virus A/Chicken/Henardl2/2004 （H5N1）. This study suggests modification of the H5-hemagglutinin MBCS in retroviral pseudotypes enhances protection efficacy in mice and this information may be helpful for development of vaccines from mammalian cells to fight against H5N 1 influenza viruses.

关键词： Influenza H5 subtype Vaccine Pseudotype Hemagglutinin Multibasic cleavage site

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Fouling community characteristics in subtropical coastal waters of the southwestern East China Sea

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Acta Oceanologica Sinica 2017年第10期36卷 70-78页

作者： LIN Heshan WANG jianjun LIU Wei LIU Kun ZHANG Shuyi HE Xuebao HUANG Yaqin LIN Junhui MOU Jianfeng ZHENG Chengxing YAN tao Laboratory of Marine Biology and Ecology Third Institute of Oceanography State Oceanic Administration Ning De Marine Environmental Monitoring Center CAS Key Laboratory of Tropical Marine Bio-resources and Ecology South China Sea Institute of OceanologyChinese Academy of Sciences

A fouling study was conducted in coastal waters southwest of the East China Sea between December 2013 and November 2014. A total of 84 species of fouling organisms belonging to 69 genera, 49 families, and 10 phyla were recorded over the entire year. The community composition was dominated by coastal warm-water species belonging to typical subtropical inner bay communities. The prosperous stage of settlement lasted from April to September, and the adhesion strength of the fouling organisms was the highest in summer. Sessile suspension feeders constituted the main core of settlement for the fouling community. Amphibalanus reticulatus was the most dominant and representative species of fouling organism, and other dominant species included Caprella equilibra, Ectopleura crocea, Anthopleura nigrescens, Stylochus ijimai, Spirobranchus kraussii, Crassostrea angulata, Perna viridis, Jassa falcata, Stenothoe valida, Sphaerozius nitidus, and Biflustra grandicella. The individuals in the fouling community showed a mutual dependence or constraint relationship due to competition for settlement space and food, and they exhibited a particular spatiotemporal distribution in accordance with adaptation to environmental factors. Temperature was the most important environmental factor determining the geographic distribution of fouling organisms. The temperature characteristics of species essentially reflect the differences in the fouling community composition in various climate zones. The species number, settlement stage, and settlement rate of fouling organisms are closely related to water temperature. Local natural environmental conditions（salinity, water currents, light, etc.） as well as human activity（such as aquaculture production） are all important factors affecting the settlement of fouling organisms.

关键词： biofouling coastal waters East China Sea community structure

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Guiding Tuberculosis Control Through the Healthy China Initiative 2019−2030

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China CDC weekly 2020年第49期2卷 948-950页

作者： Hui Zhang Xiaoqiu Liu Caihong Xu Dongmei Hu Xue Li tao Li Yanlin Zhao Mingting Chen jianjun Liu National Center for Tuberculosis Control and Prevention China CDCBeijingChina

Tuberculosis(TB)is a global public health problem,especially in *** has the third largest TB burden in the world with nearly 0.9 million new TB cases emerging *** impressive achievements,China still faces many challenges in TB control that threaten further progress and the ability to meet the targets of the End TB strategy if not *** July 15,2019,the State Council of China issued Healthy China Initiative 2019-2030,which proposed 15 special campaigns including the Tuberculosis Control Action to guide the way for China’s TB prevention and *** article introduces the current status of TB in China,achievements reached so far,and challenges remaining and interprets the targets and strategies from the individual,society,and government level in the Tuberculosis Control Action.

关键词： Tuberculosis Healthy prevention

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Co-seismic Faults and Geological Hazards and Incidence of Active Fault of Wenchuan Ms 8.0 Earthquake,Sichuan,China

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Acta Geologica Sinica(English Edition) 2009年第4期83卷 713-723页

作者： MA Yinsheng LONG Changxing TAN Chengxuan WANG tao GONG Mingquan LIAO Chunting WU Manlu SHI Wei DU jianjun PAN Feng Key Laboratory of Neotectonic Movement and Geohazard Ministry of Land and Resources Beijing 100081 Institute of Geomechanics Chinese Academy of Geological Sciences Beijing 100081 China University of Geosciences （Beijing） Beijing 100083

There are two co-seismic faults which developed when the Wenchuan earthquake happened. One occurred along the active fault zone in the central Longmen Mts. and the other in the front of Longmen Mts. The length of which is more than 270 kin and about 80 km respectively. The co-seismic fault shows a reverse flexure belt with strike of N45°-60°E in the ground, which caused uplift at its northwest side and subsidence at the southeast. The fault face dips to the northwest with a dip angle ranging from 50° to 60°. The vertical offset of the co-seismic fault ranges 2.5-3.0 m along the Yingxiu- Beichuan co-seismic fault, and 1.5-1.1 m along the Doujiangyan-Hanwang fault. Movement of the coseismic fault presents obvious segmented features along the active fault zone in central Longmen Mts. For instance, in the section from Yingxiu to Leigu town, thrust without evident slip occurred; while from Beichuan to Qingchuan, thrust and dextral strike-slip take place. Main movement along the front Longmen Mts. shows thrust without slip and segmented features. The area of earthquake intensity more than IX degree and the distribution of secondary geological hazards occurred along the hanging wall of co-seismic faults, and were consistent with the area of aftershock, and its width is less than 40km from co-seismic faults in the hanging wall. The secondary geological hazards, collapses, landslides, debris flows et al., concentrated in the hanging wall of co-seismic fault within 0-20 km from co-seismic fault.

关键词： Wenchuan earthquake co-seismic fault geological hazards

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A novel approach to melt purification of magnesium alloys

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Journal of Magnesium and Alloys 2016年第1期4卷 8-14页

作者： Fusheng Pan Xianhua Chen tao Yan Tingting Liu jianjun Mao Wei Luo Qin Wang Jian Peng Aitao Tang Bin Jiang College of Materials Science and Engineering Chongqing UniversityChongqing 400045China National Engineering Research Center for Magnesium Alloys Chongqing UniversityChongqing 400045China Chongqing Academy of Science and Technology Chongqing 401123China

A novel low-cost method for melt purification of magnesium alloys,the melt self-purifying technology(MSPT),has been developed successfully based on a low temperature melt treatment(LTMT)without adding any *** iron solubility in the molten liquid of magnesium and its alloys,and the settlement velocity of iron particles were *** is shown that the low temperature melt treatment is an effective method to decrease the impurity Fe content in magnesium and its *** any additions,the Fe content in the AZ31 alloy was reduced to 15 ppm from the initial 65 ppm,and the Fe content in the AZ61 melt was decreased to 20 ppm from the initial 150 ppm after the low temperature melt *** results also showed that the Fe content in AM60 and AM50 dropped to 15 and 18 ppm,respectively,from the initial 150 ppm after the low temperature melt *** ZK 60,the Fe content in the melt down to less than 5 ppm was *** the low temperature melt treatment,the Si content in the above alloys was also decreased obviously.

关键词： Magnesium alloys Purification Impurity Melt Iron Silicon

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Pressure tuning of the anomalous Hall effect in the kagome superconductor CsV_(3)Sb_(5)

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Chinese Physics B 2022年第1期31卷 31-36页

作者： Fang-Hang Yu Xi-Kai Wen Zhi-Gang Gui tao Wu Zhenyu Wang Zi-Ji Xiang jianjun Ying Xianhui Chen Hefei National Laboratory for Physical Sciences at Microscale and Department of Physics and CAS Key Laboratory of Strongly-coupled Quantum Matter PhysicsUniversity of Science and Technology of ChinaHefei 230026China CAS Center for Excellence in Quantum Information and Quantum Physics Hefei 230026China Collaborative Innovation Center of Advanced Microstructures Nanjing 210093China

Controlling the anomalous Hall effect(AHE)inspires potential applications of quantum materials in the next generation of *** recently discovered quasi-2D kagome superconductor CsV_(3)Sb_(5) exhibits large AHE accompanying with the charge-density-wave(CDW)order which provides us an ideal platform to study the interplay among nontrivial band topology,CDW,and unconventional ***,we systematically investigated the pressure effect of the AHE in CsV_(3)Sb_(5).Our high-pressure transport measurements confirm the concurrence of AHE and CDW in the compressed CsV_(3)Sb_(5).Remarkably,distinct from the negative AHE at ambient pressure,a positive anomalous Hall resistivity sets in below 35 K with pressure around 0.75 GPa,which can be attributed to the Fermi surface reconstruction and/or Fermi energy shift in the new CDW phase under *** work indicates that the anomalous Hall effect in CsV_(3)Sb_(5) is tunable and highly related to the band structure.

关键词： anomalous Hall effect(AHE) charge-density-wave(CDW) kagome superconductor pressure effect

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