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石墨烯化学及潜在应用

上海第二工业大学学报 2010年第4期27卷 259-271页

作者：李永玺陈彧庄小东张斌朱金辉李佩佩牛丽娟华东理工大学化学与分子工程学院教育部结构可控先进功能材料及其制备重点实验室

石墨烯以其独特的二维结构(由一层密集的、包裹在蜂巢晶体点阵上的碳原子以sp2.化连接而成的单原子层组成)和优异的电学、光学、热学和机械性能,倍受科研机构的大力关注,迅速成为材料、化学、物理和工程领域的热点研究课题。石墨烯可... 详细信息

石墨烯以其独特的二维结构(由一层密集的、包裹在蜂巢晶体点阵上的碳原子以sp2.化连接而成的单原子层组成)和优异的电学、光学、热学和机械性能,倍受科研机构的大力关注,迅速成为材料、化学、物理和工程领域的热点研究课题。石墨烯可以通过机械剥落法、碳化硅表面外延生长、取向附生法、化学气相沉积法、化学分散法及化学合成法等方法制备。与富勒烯(C60,C70)的功能化一样,利用共价键合修饰或非共价键合修饰的方法可以在石墨烯表面或石墨烯体系引入功能基团或功能组分,制备出具有特殊功能的石墨烯衍生物。大量理论和实验研究表明,石墨烯及其衍生物在纳米器件、半导体材料、生物传感器、信息存储、太阳能电池和储氢材料等领域具有潜在的重要应用价值。综述了近年来石墨烯的制备方法、化学修饰和应用研究进展,对存在的问题和未来的发展方向作了适当阐述。

关键词：石墨烯石墨烯制备石墨烯化学材料应用

Fluctuating magnetic droplets immersed in a sea of quantum spin liquid

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The Innovation 2023年第5期4卷 33-40页

作者： Zihao zhu Binglin Pan Linpeng Nie Jiamin Ni Yanxing Yang Changsheng {1. {1.gyu Jiang Yeyu Huang Erjian {1.g Yunjie Yu Jianjian Miao Adrian D.Hilier Xianhui {1. Tao Wu Yi Zhou Shiyan Li Lei Shu State Key Laboratory of Surface Phys ics and Department of PhysicsFudan UniversityShanghai 200433China CAS Key Laboratory of Stronglycoupled Quantum Matter physics Department of PhysicsUniversity of Science and Technology of ChinaHefeiAnhui 230026China Department of physics the University of Hong KongHong KongChina ISIS Pulsed Neutron and Muon Source STFC Rutherford Appleton LaboratoryHarwell CampusDidcotOxfordshire 0X110QXUK Collaborative Innovation Center of Advanced Micr ostructures Nanjing 210093China CAS Center for Excellence in Superconducting Electronics(CENSE) Shanghai 200050China Institute of physics and Beijing National Laboratory for Condensed Matter physics Chinese Academy of SciencesBeijing 100190China Songshan Lake Materials Laboratory DongguanGuangdong 523808China Kavli Institute for Theoretical Sciences and CAS Center for Excellence in Topological Quantum Computation University of Chinese Academy of SciencesBeijing 100190China shanghai Research Center for Quantum Sciences Shanghai 201315China

The search of quantum spin liquid(QSL),an exotic magnetic state with strongly fluctuating and highly entangled spins down to zero temperature,is a main theme in current condensed matter ***,there is no smoking gun evidence for deconfined spinons in any QSL candidate so *** disorders and competing exchange interactions may prevent the formation of an ideal QSL state on frustrated spin *** we report comprehensive and systematic measurements of the magnetic susceptibility,ultralow-temperature specific heat,muon spin relaxation(μSR),nuclear magnetic resonance(NMR),and thermal conductivity for NaYbSe2.single crystals,in which Yb3+ions with effective spin-1.2.form a perfect triangular *** these complementary techniques find no evidence of long-range magnetic order down to their respective base ***,specific heat,μSR,and NMR measurements suggest the coexistence of quasi-static and dynamic spins in *** scattering from these quasi-static spins may cause the absence of magnetic thermal ***,we propose a scenario of fluctuating ferrimagnetic droplets immersed in a sea of *** may be quite common on the way pursuing an ideal QSL,and provides a brand new platform to study how a QSL state survives impurities and coexists with other magnetically ordered states.

关键词： NMR immersed quantum

Experimental exploration of five-qubit quantum error-correcting code with superconducting qubits

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National Science Review 2022年第1期9卷 100-106页

作者： Ming Gong Xiao Yuan Shiyu Wang Yulin Wu Youwei Zhao chen Zha Shaowei Li Zhen Zhang Qi Zhao Yunchao Liu Futian Liang Jin Lin Yu Xu Hui Deng Hao Rong He Lu Simon C.Benjamin cheng-Zhi Peng Xiongfeng Ma Yu-Ao chen Xiaobo zhu Jian-Wei Pan Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern physics University of Science and Technology of China shanghai Branch CAS Center for Excellence and Synergetic Innovation Center in Quantum Information and Quantum Physics University of Science and Technology of China shanghai Research Center for Quantum Sciences Center for Quantum Information Institute for Interdisciplinary Information Sciences Tsinghua University Department of Materials University of Oxford

Quantum error correction is an essential ingredient for universal quantum computing.D espite tremendous experimental efforts in the study of quantum error correction,to date,there has been no demonstration in the realis ation of universal quantum error-correcting code,with the subsequent verification of all key features including the identification of an arbitrary physical error,the capability for transversal manipulation of the logical state and state *** address this challenge,we experimentally realise the [5,1.3]code,the so-called smallest perfect code that permits corrections of generic single-qubit *** the experiment,having optimised the encoding circuit,we employ an array of superconducting qubits to realise the [5,1.3] code for several typical logical states including the magic state,an indispensable resource for realising non-Clifford *** encoded states are prepared with an average fidelity of 57.1.3)% while with a high fidelity of 98.6(1.% in the code ***,the arbitrary single-qubit errors introduced manually are identified by measuring the *** further implement logical Pauli operations with a fidelity of 97.2.2.% within the code ***,we realise the decoding circuit and recover the input state with an overall fidelity of 74.5(6)%,in total with 92.*** work demonstrates each key aspect of the [5,1.3] code and verifies the viability of experimental realisation of quantum error-correcting codes with superconducting qubits.

关键词： quantum error-correcting code superconducting qubit five-qubit code error detection logical operation

Functional Recovery with Electro-Acupuncture Stimulation in an Mecp2.Knockout Rat Model of Rett Syndrome

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Engineering 2022年第5期8卷 83-89页

作者： Yanhong Sun Zhifang chen Yi Xu Yuefang Zhang Zhilei Ge chenglie Lin Yi Zhou Fangfei Zhao Meiling Yan Xinyi Liu Ying {2. Jimin Gao Hongyi Li Lihua Wang Jun Hu Zilong Qiu Chunhai Fan Bioimaging Center Shanghai Synchrotron Radiation FacilityZhang Jiang LaboratoryShanghai Advanced Research InstituteChinese Academy of SciencesShanghai 201210China Division of Physical Biology CAS Key Laboratory of Interfacial Physics and TechnologyShanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201800China Institute of Neuroscience Shanghai Institutes for Biological SciencesChinese Academy of SciencesShanghai 200031China School of Laboratory Medicine and Life Sciences Wenzhou Medical UniversityWenzhou 325035China School of Chemistry and Chemical Engineering Shanghai Jiao Tong UniversityShanghai 200240China College of Basic Medicine Chengdu University of Traditional Chinese MedicineChengdu 611137China Cardiology Department Beijing HospitalBeijing 100730China

Rett syndrome is a progressive neurodevelopmental disorder that lacks effective *** deep-brain stimulation can alleviate some symptoms in Rett model mice,this interventional manipula-tion requires deliberate surgical ***,we report that electro-acupuncture stimulation(EAS)can ameliorate symptoms of an Mecp2.knockout rat model of Rett syndrome from the remote acupoints Baihui(GV 2.),Yongquan(KI 1.,and Shenmen(HT 7).We find that EAS not only prolongs the survival time of Rett rats,but also improves their behavior ability,including locomotion,motor coordination,and social *** activation was observed in the substantia nigra of the midbrain,corpus striatum,and cerebral cortex of wild-type and Rett model rats,as reflected by the increased expression of the c-Fos ***,EAS provides a potential promising therapeutic tool for treating neurodevel-opmental diseases.

关键词： Neurodevelopmental disorder Electro-acupuncture stimulation Rett syndrome Motor function Social interaction

Pancreatic lipase inhibitory constituents from Fructus Psoraleae

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Chinese Journal of Natural Medicines 2020年第5期18卷 369-378页

作者： HOU Xu-Dong SONG Li-Lin CAO Yun-Feng WANG Yi-Nan ZHOU Qi FANG Sheng-Quan WU Da-Chang ZANG Shi-zhu {1. Lu BAI Yue GE Guang-Bo HOU Jie College of Basic Medical Sciences Dalian Medical UniversityDalian 116000China Dalian Institute of Chemical physics Chinese Academy of SciencesDalian 116000China Translational Medicine Center Yueyang Hospital of Integrated Traditional Chinese and Western Medicine&Institute of Interdisciplinary Integrative Medicine ResearchShanghai University of Traditional Chinese MedicineShanghai 200000China Dalian Runsheng Kangtai Medical Laboratory Co.Ltd. Dalian 116000China

Pancreatic lipase(PL), a crucial enzyme in the digestive system of mammals, has been proven as a therapeutic target to prevent and treat obesity. The purpose of this study is to evaluate and characterize the PL inhibition activities of the major constituents from Fructus Psoraleae(FP), one of the most frequently used Chinese herbs with lipid-lowering activity. To this end, a total of eleven major constituents isolated from Fructus Psoraleae have been obtained and their inhibition potentials against PL have been assayed by a fluorescence-based assay. Among all tested compounds, isobavachalcone, bavachalcone and corylifol A displayed strong inhibition on PL(IC50 1. μmol·L-1.. Inhibition kinetic analyses demonstrated that isobavachalcone, bavachalcone and corylifol A acted as mixed inhibitors against PL-mediated 4-methylumbelliferyl oleate(4-MUO) hydrolysis, with the Ki values of 1.61. 3.77 and 1..1.μmol·L-1. respectively. Furthermore, docking simulations indicated that two chalcones(isobavachalcone and bavachalcone) could interact with the key residues located in the catalytic cavity of PL via hydrogen binding and hydrophobic interactions. Collectively, these finding provided solid evidence to support that Fructus Psoraleae contained bioactive compounds with lipid-lowering effects via targeting PL, and also suggested that the chalcones in Fructus Psoraleae could be used as ideal leading compounds to develop novel PL inhibitors.

关键词： Pancreatic lipase Fructus Psoraleae Inhibition potential Isobavachalcone Bavachalcone

Amplitude analysis of the decays D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)

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Chinese physics C 2024年第8期48卷 6-33页

作者： M.Ablikim M.N.Achasov P.Adlarson O.Afedulidis X.C.Ai R.Aliberti A.Amoroso Q.An Y.Bai O.Bakina I.Balossino Y.Ban H.-R.Bao V.Batozskaya K.Begzsuren N.Berger M.Berlowski M.Bertani D.Bettoni F.Bianchi E.Bianco A.Bortone I.Boyko R.A.Briere A.Brueggemann H.Cai X.Cai A.Calcaterra G.F.Cao N.Cao S.A.Cetin J.F.Chang W.L.Chang G.R.Che G.Chelkov C.chen C.H.chen Chao chen G.chen H.S.chen M.L.chen S.J.chen S.L.chen S.M.chen T.chen X.R.chen X.T.chen Y.B.chen Y.Q.chen Z.J.chen Z.Y.chen S.K.Choi X.Chu G.Cibinetto F.Cossio J.J.Cui H.L.Dai J.P.Dai A.Dbeyssi R.E.de Boer D.Dedovich C.Q.Deng Z.Y.Deng A.Denig I.Denysenko M.Destefanis F.De Mori B.Fang S.S.Fang W.X.Fang Y.Fang Y.Q.Fang R.Farinelli L.Fava F.Feldbauer G.Felici C.Q.Feng J.H.Feng Y.T.Feng K.Fischer M.Fritsch C.D.Fu J.L.Fu Y.W.Fu H.Gao Y.N.Gao Yang Gao S.Garbolino I.Garzia P.T.Ge Z.W.Ge C.Geng E.M.Gersabeck B.Ding X.X.Ding Y.Ding Y.Ding J.Dong L.Y.Dong M.Y.Dong X.Dong M.C.Du S.X.Du Z.H.Duan P.Egorov Y.H.Fan J.Fang JA.Gilman K.Goetzen L.Gong W.X.Gong W.Gradl S.Gramigna M.Greco M.H.Gu Y.T.Gu C.Y.Guan Z.L.Guan A.Q.Guo L.B.Guo M.J.Guo R.P.Guo Y.P.Guo A.Guskov J.Gutierrez K.L.Han T.T.Han X.Q.Hao F.A.Harris K.K.He K.L.He F.H.Heinsius C.H.Heinz Y.K.Heng C.Herold T.Holtmann P.C.Hong G.Y.Hou X.T.Hou Y.R.Hou Z.L.Hou B.Y.Hu H.M.Hu J.F.Hu T.Hu Y.Hu G.S.Huang K.X.Huang L.Q.Huang X.T.Huang Y.P.Huang T.Hussain F.H\"olzken N.H\"usken N.in der Wiesche M.Irshad J.Jackson S.Janchiv J.H.Jeong Q.Ji Q.P.Ji W.Ji X.B.Ji X.L.Ji Y.Y.Ji X.Q.Jia Z.K.Jia D.Jiang H.B.Jiang P.C.Jiang S.S.Jiang T.J.Jiang X.S.Jiang Y.Jiang J.B.Jiao J.K.Jiao Z.Jiao S.Jin Y.Jin M.Q.Jing X.M.Jing T.Johansson S.Kabana N.Kalantar-Nayestanaki X.L.Kang X.S.Kang M.Kavatsyuk B.C.Ke V.Khachatryan A.Khoukaz R.Kiuchi O.B.Kolcu B.Kopf M.Kuessner X.Kui A.Kupsc W.K\"uhn J.J.Lane P.Larin L.Lavezzi T.T.Lei Z.H.Lei H.Leithoff M.Lellmann T.Lenz C.Li C.Li C.H.Li cheng Li D.M.Li F.Li G.Li H.Li H.B.Li H.J.Li H.N.Li Hui Li J.R.Li J.S.Li K.Li L.J.Li L.K.Li Lei Li M.H.Li P.R.Li Q.M.Li Q.X.Li R.Li S.X.Li T.Li W.D.Li W.G.Li X.Li X.H.Li X.L.Li X.Y.Li Y Institute of High Energy physics Chinese Academy of SciencesBeijing 100049China Beihang university Beijing 100191China Bochum Ruhr-university D-44780 BochumGermany Budker Institute of Nuclear physics SB RAS(BINP) Novosibirsk 630090Russia Carnegie Mellon university PittsburghPennsylvania 15213USA Central china Normal {1. Wuhan 430079China Central South university Changsha 410083China china Center of Advanced Science and Technology Beijing 100190China china {1. of Geosciences Wuhan 430074China Chung-Ang university Seoul06974Republic of Korea COMSATS university Islamabad Lahore CampusDefence RoadOff Raiwind Road54000 LahorePakistan Fudan university Shanghai 200433China GSI Helmholtzcentre for Heavy Ion Research GmbH D-64291 DarmstadtGermany Guangxi Normal university Guilin 541004China Guangxi university Nanning 530004China Hangzhou Normal university Hangzhou 310036China Hebei university Baoding 071002China Helmholtz Institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan Normal university Xinxiang 453007China Henan university Kaifeng 475004China Henan university of Science and Technology Luoyang 471003China Henan university of Technology Zhengzhou 450001China Huangshan College Huangshan 245000China Hunan Normal university Changsha 410081China Hunan university Changsha 410082China Indian Institute of Technology Madras Chennai 600036India Indiana university BloomingtonIndiana 47405USA INFN Laboratori Nazionali di Frascati INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly INFN Laboratori Nazionali di Frascati INFN Sezione di PerugiaI-06100PerugiaItaly INFN Laboratori Nazionali di Frascati University of PerugiaI-06100PerugiaItaly INFN Sezione di Ferrara INFN Sezione di FerraraI-44122FerraraItaly INFN Sezione di Ferrara University of FerraraI-44122FerraraItaly Inner Mongolia university Hohhot 010021China Institute of Modern physics Lanzhou 730000China Institute of physics and Technology Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de A

Using e^(+)e^(−)annihilation data corresponding to an integrated luminosity of 2.93 fb^(−1.taken at the center-of-mass energy√s=3.773 GeV with the BESIII detector,a joint amplitude analysis is performed on the decays D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η).The fit fractions of individual components are obtained,and large interferences among the dominant components of the decays D^(0)→a_(1.(1.60)π,D^(0)→π(1.00)π,D^(0)→ρ(770)ρ(770),and D^(0)→2.ππ)_(S)are observed in both *** the obtained amplitude model,the CP-even fractions of D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are determined to be(75.2.1.1.(stat).±1.5_(syst.))%and(68.9±1.5_(stat).±2.4_(syst.))%,*** branching fractions of D^(0)→π^(+)π^(−)π^(+)π^(−)and D^(0)→π^(+)π^(−)π^(0)π^(0)(non-η)are measured to be(0.688±0.01._(stat.)±0.01._(syst.))%and(0.951.0.02._(stat.)±0.02.0}(syst.))%,*** amplitude analysis provides an important model for the binning strategy in measuring the strong phase parameters of D^(0)→4πwhen used to determine the CKM angleγ(ϕ_(3))via the B^(−)→DK^(−)decay.

关键词： BESIII D^(0)meson decays amplitude analysis CP-even fraction

Collimated GeV attosecond electron–positron bunches from a plasma channel driven by 1. PW lasers

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Matter and Radiation at Extremes 2019年第1期4卷 42-47页

作者： Xing-Long zhu Min {1. Tong-Pu Yu Su-Ming Weng Feng He {2.-Ming Sheng Key Laboratory for Laser Plasmas(MoE) School of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Collaborative Innovation Center of IFSA Shanghai Jiao Tong UniversityShanghai 200240China Department of physics National University of Defense TechnologyChangsha 410073China SUPA Department of PhysicsUniversity of StrathclydeGlasgow G40NGUK Tsung-Dao Lee Institute Shanghai Jiao Tong UniversityShanghai 200240China

High-energy positrons and bright g-ray sources are of great importance both in fundamental research and for practical ***,collimated GeV electron–positron pair jets and g-ray flashes are still rarely produced in the ***,we demonstrate that by irradiating a near-critical-density plasma channel with two 1. PW-scale laser pulses,highly directional GeV electron–positron pairs and bright g-ray beams can be efficiently ***-dimensional particle-incell simulations show the formation of GeV positron jets with high density(8×1.^(2.0}=cm^(3)),attosecond duration(400 as),and a divergence angle of 1.°.Additionally,ultrabright[2.1.^(2.) photons s^(-1.1.mm^(-2. mrad^(-2. (0.1.bandwidth_(-1.]collimated attosecond(370 as)g-ray flashes with a laser energy conversion efficiency of 5.6%are *** features show the significant advantage of using a plasma channel as compared with a uniformplasma and thus open up new possibilities for a wide variety of applications.

关键词： positron second directional

双模型空中目标红外谱段的联合SNCR评估方法

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红外与毫米波学报 2020年第5期39卷 660-666页

作者：张磊陈略朱含露饶鹏北京跟踪与通信技术研究所北京100094 中国科学院智能红外感知重点实验室上海200083 中国科学院上海技术物理研究所上海200083 中国科学院大学北京100049

在天基平台下实现对空中飞机目标的探测,存在距离远、目标信号弱、背景杂波复杂和探测器噪声等不利因素,因此,要获取目标的最强信号,确定在探测过程中的谱段至关重要。为此系统性地建立了飞机羽流的梯形羽流和锥形羽流仿真模型,并提出... 详细信息

在天基平台下实现对空中飞机目标的探测,存在距离远、目标信号弱、背景杂波复杂和探测器噪声等不利因素,因此,要获取目标的最强信号,确定在探测过程中的谱段至关重要。为此系统性地建立了飞机羽流的梯形羽流和锥形羽流仿真模型,并提出了利用信噪比(SNR)和信杂比(SCR)联合的SNCR方法对空中目标的探测谱段进行确定。实验结果表明:针对空中目标,不同目标SNCR值不同,但峰值区域不变,由此方法可以确定探测谱段,最终确定探测的谱段分别为:中波波段为3.7~4.1.μm,波段间隔在0.3μm以上;长波波段为8~1.μm,波段间隔在0.35μm以上。

关键词：红外探测红外谱段 SNCR 空中目标双模型

相对论重离子对撞中奇异强子产生机制的实验研究进展

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科学通报 2021年第34期66卷 4358-4367页

作者：陈金辉马余刚朱相雷复旦大学现代物理研究所核物理与离子束应用教育部重点实验室上海200433 清华大学工程物理系北京100084

相对论重离子对撞是实验室研究夸克物质的理想途径,其中奇异性增强是寻找和研究新物质形态夸克胶子等离子体(quark-gluon plasma, QGP)的重要探针之一.本文系统阐述了我们课题组在奇异强子产生实验研究方面的几个工作,包括:(1.奇异强子... 详细信息

相对论重离子对撞是实验室研究夸克物质的理想途径,其中奇异性增强是寻找和研究新物质形态夸克胶子等离子体(quark-gluon plasma, QGP)的重要探针之一.本文系统阐述了我们课题组在奇异强子产生实验研究方面的几个工作,包括:(1.奇异强子产生机制的实验测量.从奇异夸克动力学角度研究QGP性质,并研究其产额比与量子色动力学(quantum chromodynamics, QCD)物质相变的联系,发现在金核+金核对撞能量大于或小于√^(s)NN=1..6 GeV的实验区间,奇异强子产额随着横向动量变化出现显著差异.例如,在束流能量大于或等于1..6 GeV时,多奇异性强子产额比符合夸克并合模型描述;在束流能量小于1..6 GeV能区,该实验数据迅速偏离夸克并合模型计算结果,这可能是QCD相变的信号.(2.奇异性原子核-超氚核质量和结合能的精确测量.实验结果以高精度验证了电荷-宇称-时间(charge, parity, time, CPT)联合变换不变性在超氚核-反超氚核系统上成立,实现了CPT对称性在迄今为止最重反物质原子核上的检验,测量结果将为扩展标准模型参数提供实验限制.同时,发现超氚核结合能远大于0,更新了近50年前的测量结果,回应了长期困扰学界的超氚核结合能的"Dalitz之惑".新的测量结果也为理论计算超子-核子之间相互作用提供了更为精确的限制.(3)多奇异强子-核子相互作用的测量.实验结果提供了奇异数S=-3的Ω超子与奇异数S=0的质子作用强度的第一手数据,发现它们之间存在强吸引作用,有望形成奇异双重子态,检验了质子-Ω双重子态的理论假设.这些研究丰富了人们对强相互作用,尤其是QGP中奇异强子产额增强、物质-反物质基本对称性和多奇异性强子奇特态等的认识.

关键词：相对论重离子对撞夸克胶子等离子体奇异性增强奇异强子超氚核超子-核子相互作用