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Circuits and Systems 2013年第3期4卷 245-251页

作者： jefferson z. moro Luís F. C. Duarte Elnatan C. Ferreira José A. Siqueira Dias Department of Electronic and Microelectronic State University of Campinas Campinas Brazil

Currently a large effort is being done with the intention to educate people about how much energy each electrical appliance uses in their houses, since this knowledge is the fundamental basis of energy efficiency programs that can be managed by the household owners. This paper presents a simple yet functional non-intrusive method for electric power measurement that can be applied in energy efficiency programs, in order to provide a better knowledge of the energy consumption of the appliances in a home.

关键词： Energy Consumption Energy Efficiency Energy Metering Power Measurement

STCF conceptual design report (Volume 1): Physics & detector

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Frontiers of physics 2024年第1期19卷 1-154页

作者： M.Achasov X.C.Ai L.P.An R.Aliberti Q.An X.z.Bai Y.Bai O.Bakina A.Barnyakov V.Blinov V.Bobrovnikov D.Bodrov A.Bogomyagkov A.Bondar I.Boyko z.H.Bu F.M.Cai H.Cai J.J.Cao Q.H.Cao X.Cao z.Cao Q.Chang K.T.Chao D.Y.Chen H.Chen H.X.Chen J.F.Chen K.Chen L.L.Chen P.Chen S.L.Chen S.M.Chen S.Chen S.P.Chen W.Chen X.Chen X.F.Chen X.R.Chen Y.Chen Y.Q.Chen H.Y.Cheng J.Cheng S.Cheng T.G.Cheng J.P.Dai L.Y.Dai X.C.Dai D.Dedovich A.Denig I.Denisenko J.M.Dias D.z.Ding L.Y.Dong W.H.Dong V.Druz.inin D.S.Du Y.J.Du z.G.Du L.M.Duan D.Epifanov Y.L.Fan S.S.Fang z.J.Fang G.Fedotovich C.Q.Feng X.Feng Y.T.Feng J.L.Fu J.Gao Y.N.Gao P.S.Ge C.Q.Geng L.S.Geng A.Gilman L.Gong T.Gong B.Gou W.Gradl J.L.Gu A.Guevara L.C.Gui A.Q.Guo F.K.Guo J.C.Guo J.Guo Y.P.Guo z.H.Guo A.Guskov K.L.Han L.Han M.Han X.Q.Hao J.B.He S.Q.He X.G.He Y.L.He z.B.He z.X.Heng B.L.Hou T.J.Hou Y.R.Hou C.Y.Hu H.M.Hu K.Hu R.J.Hu W.H.Hu X.H.Hu Y.C.Hu J.Hua G.S.Huang J.S.Huang M.Huang Q.Y.Huang W.Q.Huang X.T.Huang X.J.Huang Y.B.Huang Y.S.Huang N.Hüsken V.Ivanov Q.P.Ji J.J.Jia S.Jia z.K.Jia H.B.Jiang J.Jiang S.z.Jiang J.B.Jiao z.Jiao H.J.Jing X.L.Kang X.S.Kang B.C.Ke M.Kenz.e A.Khoukaz.I.Koop E.Kravchenko A.Kuz.in Y.Lei E.Levichev C.H.Li C.Li D.Y.Li F.Li G.Li G.Li H.B.Li H.Li H.N.Li H.J.Li H.L.Li J.M.Li J.Li L.Li L.Li L.Y.Li N.Li P.R.Li R.H.Li S.Li T.Li W.J.Li X.Li X.H.Li X.Q.Li X.H.Li Y.Li Y.Y.Li z.J.Li H.Liang J.H.Liang Y.T.Liang G.R.Liao L.z.Liao Y.Liao C.X.Lin D.X.Lin X.S.Lin B.J.Liu C.W.Liu D.Liu F.Liu G.M.Liu H.B.Liu J.Liu J.J.Liu J.B.Liu K.Liu K.Y.Liu K.Liu L.Liu Q.Liu S.B.Liu T.Liu X.Liu Y.W.Liu Y.Liu Y.L.Liu z.Q.Liu z.Y.Liu z.W.Liu I.Logashenko Y.Long C.G.Lu J.X.Lu N.Lu Q.F.Lü Y.Lu Y.Lu z.Lu P.Lukin F.J.Luo T.Luo X.F.Luo Y.H.Luo H.J.Lyu X.R.Lyu J.P.Ma P.Ma Y.Ma Y.M.Ma F.Maas S.Malde D.Matvienko z.X.Meng R.Mitchell A.Nefediev Y.Nefedov S.L.Olsen Q.Ouyang P.Pakhlov G.Pakhlova X.Pan Y.Pan E.Passemar Y.P.Pei H.P.Peng L.Peng X.Y.Peng X.J.Peng K.Peters S.Pivovarov E.Pyata B.B.Qi Y.Q.Qi W.B.Qian Y.Qian C.F.Qiao J.J.Qin J.J.Qin L.Q.Qin X.S.Qin T.L.Qiu J.Rademacker C.F.Redmer H.Y.Sang Anhui University Hefei 230039China Beihang University Beijing 100191China Budker Institute of Nuclear Physics Novosibirsk 630090Russia CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China Cavendish Laboratory University of CambridgeJJ Thomson AveCambridge CB30HEUnited Kingdom Central China Normal University Wuhan 430079China Central South University Changsha 410083China China University of Geosciences Wuhan 430074China China University of Mining and Technology Xuzhou 221116China École Polytechnique Fédérale de Lausanne(EPFL) LausanneSwitzerland Fudan University Shanghai 200433China Goethe University Frankfurt D-60325 Frankfurt am MainGermany Guangxi Normal University Guilin 541004China Guangxi Uninversity Nanning 530004China Hangz.ou Institute for Advanced Study UCASHangzhou 310024China Hebei Normal University Shijiazhuang 050024China Hebei University Baoding 071002China Hefei University of Technology Hefei 230601China Helmholtz.Institute Mainz Staudinger Weg 18D-55099 MainzGermany Henan Normal University Xinxiang 453007China Henan University Kaifeng 475004China High Energy Physics Center Chung-Ang UniversitySeoul 06974Korea Higher School of Economy 11 Pokrovsky Bulvar Moscow 109028Russia Huangshan University Huangshan 245000China Hubei University of Automotive Technology Shiyan 442002China Hunan Normal University Changsha 410081China Hunan University of Science and Technology Xiangtan 411201China Hunan University Changsha 410082China Indiana University BloomingtonIndiana 47405USA Inner Mongolia University Hohhot 010021China Institute of Advanced Science Facilities Shenzhen 518107China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Institute of Physics Academia SinicaTaipeiTaiwan 11529China Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100190China Jilin University Changch

The superτ-charm facility(STCF)is an electron–positron collider proposed by the Chinese particle physics *** is designed to operate in a center-of-mass energy range from 2 to 7 GeV with a peak luminosity of 0.5×10^(35) cm^(–2)·s^(–1) or *** STCF will produce a data sample about a factor of 100 larger than that of the presentτ-charm factory—the BEPCII,providing a unique platform for exploring the asymmetry of matter-antimatter(charge-parity violation),in-depth studies of the internal structure of hadrons and the nature of non-perturbative strong interactions,as well as searching for exotic hadrons and physics beyond the Standard *** STCF project in China is under development with an extensive R&D *** document presents the physics opportunities at the STCF,describes conceptual designs of the STCF detector system,and discusses future plans for detector R&D and physics case studies.

关键词： electron–positron collider tau-charm region high luminosity STCF detector conceptual design

Van der Waals force-induced intralayer ferroelectric-to-antiferroelectric transition via interlayer sliding in bilayer group-Ⅳmonochalcogenides

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npj Computational Materials 2022年第1期8卷 446-454页

作者： Bo Xu Junkai Deng Xiangdong Ding Jun Sun jefferson z.e Liu State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong University710049Xi’anChina Department of Mechanical Engineering The University of MelbourneParkvilleVIC3010Australia

Two-dimensional materials with ferroelectric properties break the siz. effect of conventional ferroelectric materials and unlock unprecedented potentials of ferroelectric-related application at small length *** first-principles calculations,a sliding-induced ferroelectric-to-antiferroelectric behavior in bilayer group-IV monochalcogenides(MX,with M=Ge,Sn and X=S,Se)is *** this mechanism,the top layer exhibits a reversible intralayer ferroelectric switching,leading to a reversible transition between the ferroelectric and antiferroelectric states in the bilayer *** results show that the interlayer van der Waals interaction,which is usually considered to be weak,can actually generate an in-plane lattice distortion and thus cause the breaking/forming of intralayer covalent bonds in the top layer,leading to the observed anomalous *** unique property has advantages for energy harvesting over existing piez.electric and triboelectric *** interlayer sliding-induced big polariz.tion change(40μC cm^(−2))and ultrahigh polariz.tion changing rate generate an open-circuit voltage two orders of magnitude higher than that of MoS_(2)-based *** theoretical prediction of power output for this bilayer MXs at a moderate sliding speed 1 m s^(−1)is four orders of magnitude higher than the MoS_(2)nanogenerator,indicating great potentials in energy harvesting applications.

关键词： ferroelectric interlayer layer

Detecting subtle yet fast skeletal muscle contractions with ultrasoft and durable graphene-based cellular materials

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National Science Review 2022年第4期9卷 105-115页

作者： z.jun He z.eng Qi Huichao Liu Kangyan Wang Leslie Roberts jefferson z.Liu Yilun Liu Stephen J.Wang Mark J.Cook George P.Simon Ling Qiu Dan Li Department of Chemical Engineering The University of Melbourne Department of Materials Science and Engineering Monash University Department of Chemical Engineering Monash University State Key Laboratory for Strength and Vibration of Mechanical Structures School of Aerospace EngineeringXi'an Jiaotong University Neurophysiology Department Department of Neurology and Neurological ResearchSt Vincent's Hospital Department of Medicine St.Vincent's HospitalUniversity of Melbourne Department of Mechanical Engineering University of Melbourne Department of Design Monash University School of Design The Hong Kong Polytechnic University Shenz.en Geim Graphene Center Tsinghua-Berkeley Shenzhen InstituteTsinghua University

Human bodily movements are primarily controlled by the contractions of skeletal muscles. Unlike joint or skeletal movements that are generally performed in the large displacement range, the contractions of the skeletal muscles that underpin these movements are subtle in intensity yet high in frequency. This subtlety of movement makes it a formidable challenge to develop wearable and durable so?t materials to electrically monitor such motions with high fidelity for the purpose of, for example, muscle/neuromuscular disease diagnosis. Here we report that an intrinsically fragile ultralow-density graphene-based cellular monolith sandwiched between silicone rubbers can exhibit a highly effective stress and strain transfer mechanism at its interface with the rubber, with a remarkable improvement in stretchability(>100%). In particular, this hybrid also exhibits a highly sensitive, broadband-frequency electrical response(up to 180 Hz. for a wide range of strains. By correlating the mechanical signal of muscle movements obtained from this hybrid material with electromyography, we demonstrate that the strain sensor based on this hybrid material may provide a new, so?t and wearable mechanomyography approach for real-time monitoring of complex neuromuscular–skeletal interactions in a broad range of healthcare and human–machine interface applications. This work also provides a new architecture-enabled functional so?t material platform for wearable electronics.

关键词： cellular graphene strain sensors high-frequency electromechanical property surface mechanomyography skeletal muscle activity

Mechanical buckling induced periodic kinking/stripe microstructures in mechanically peeled graphite fla es from HOPG

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Acta Mechanica Sinica 2015年第4期31卷 494-499页

作者： Manrui Ren z. Liu Quan-shui z.eng jefferson z.e Liu Department of Engineering Mechanics and Center for Nano and Micro Mechanics Tsinghua University Department of Mechanical and Aerospace Engineering Monash University

Mechanical exfoliation is a widely used method to isolate high quality graphene layers from bulk graphite. In our recent experiments, some ordered microstructures, consisting of a periodic alternation of kinks and stripes, were observed in thin graphite flakes that were mechanically peeled from highly oriented pyrolytic graphite. In this paper, a theoretical model is presented to attribute the formation of such ordered structures to the alternation of two mechanical processes during the exfoliation：（1） peeling of a graphite flake and （2） mechanical buckling of the flake being sub- jected to bending. In this model, the width of the stripes L is determined by thickness h of the flakes, surface energy Y, and critical buckling strain ecr. Using some appropriate values of y and ecr that are within the ranges determined by other inde- pendent experiments and simulations, the predicted relations between the stripe width and the flake thickness agree reason- ably well with our experimental measurements. Conversely, measuring the L-h relations of the periodic microstructures in thin graphite flakes could help determine the critical mechan- ical buckling strain εcr and the interface energy γ.

关键词： HOPG Mechanical exfoliation Periodic microstructures Kinking Mechanical buckling

Effects of vacancies on interwall spacings of multi-walled carbon nanotubes

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Journal of z.ejiang University-Science A(Applied Physics & Engineering) 2010年第10期11卷 714-721页

作者： Ming-du MA jefferson z.e LIU Li-feng WANG Lu-ming SHEN Quan-shui z.ENG Department of Engineering Mechanics Tsinghua University Beijing 100084 China Department of Mechanical and Aerospace Engineering Monash University Clayton Victoria 3168 Australia Department of Mechanical Engineering Massachusetts Institute of Technology Cambridge Massachusetts 02139 USA School of Civil Engineering University of Sydney NSW 2006 Australia

We use molecular dynamics (MD) simulations to study the effects of vacancies on tube diameters and interwall spacings of multi-walled carbon nanotubes (MWCNTs). Two types of vacancies, double vacancy and three dangling-bond (3DB) single vacancy, are identified to have opposite effects on the tube siz. change, which explains the inconsistency of the experimentally measured interwall spacings of MWCNTs after electron beam irradiation. A theoretical model to quantitatively predict the shrunk structures of the irradiated MWCNTs is further developed. We also discuss the fabrications of prestressed MWCNTs, in which reduced interwall spacings are desired to enhance the overall elastic modulus and strength.

关键词：多壁碳纳米管间距作者分子动力学电子束照射尺寸变化实验测量定量预测

Diverse electronic and magnetic properties of CrS_(2) enabling strain-controlled 2D lateral heterostructure spintronic devices

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npj Computational Materials 2021年第1期7卷 704-712页

作者： Kaiyun Chen Junkai Deng Yuan Yan Qian Shi Tieyan Chang Xiangdong Ding Jun Sun Sen Yang jefferson z.e Liu MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter State Key Laboratory for Mechanical Behavior of MaterialsXi’an Jiaotong UniversityXi’an 710049China Department of Mechanical Engineering The University of MelbourneParkvilleVIC 3010Australia

Lateral heterostructures of two-dimensional(2D)materials,integrating different phases or materials into a single piece of nanosheet,have attracted intensive research interests for electronic *** the 2D lateral heterostructures to spintronics demands more diverse electromagnetic properties of 2D *** this paper,using density functional theory calculations,we survey all IV,V,and VI group transition metal dichalcogenides(TMDs)and discover that CrS_(2)has the most diverse electronic and magnetic properties:antiferromagnetic(AFM)metallic 1T phase,non-magnetic(NM)semiconductor 2H phase,and ferromagnetic(FM)semiconductor 1T′phase with a Curie temperature of~1000 ***,we find that a tensile or compressive strain can turn the 1T′phase into a spin-up or spin-down *** strain tunability can be attributed to the lattice deformation under tensile/compressive strain that selectively promotes the spin-up/spin-down VBM(valence band bottom)orbital *** diverse electromagnetic properties and the strain tunability enable strain-controlled spintronic devices using a single piece of CrS_(2)nanosheet with improved energy *** a demo,a prototypical design of the spin-valve logic device is *** offers a promising solution to address the challenge of high energy consumption in miniaturiz.d spintronic devices.

关键词： strain electronic magnetic

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自由的真谛

Genetic diseases conferring resistance to infectious diseases

2018年

作者： (美)杰斐逊(Thomas jefferson)

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Genes & Diseases 2015年第3期2卷 247-254页

作者： Isabelle C.Withrock Stephen J.Anderson Matthew A.jefferson Garrett R.McCormack Gregory S.A.Mlynarcz.k Aron Nakama Jennifer K.Lange Carrie A.Berg Sreemoyee Acharya Matthew L.Stock Melissa S.Lind K.C.Luna Naveen C.Kondru Sireesha Manne Bhavika B.Patel Bierlein Mde la Rosa Kuei-Pin Huang Shaunik Sharma Hilary z.Hu Sri Harsha Kanuri Steve A.Carlson Department of Biomedical Sciences Iowa State University College of Veterinary MedicineAmesIA 50011USA Department of Psychology Iowa State University College of Liberal Arts and SciencesAmesIA 50011USA Department of Kinesiology Iowa State University College of Liberal Arts and SciencesAmesIA 50011USA Department of Genetics Developmental and Cell BiologyIowa State University College of Liberal Arts and SciencesAmesIA 50011USA Neuroscience Interdepartmental Program Iowa State UniversityAmesIA 50011USA

This review considers available evidence for mechanisms of conferred adaptive advantages in the face of specific infectious *** short,we explore a number of genetic conditions,which carry some benefits in adverse circumstances including exposure to infectious *** examples discussed are conditions known to result in resistance to a specific infectious disease,or have been proposed as being associated with resistance to various infectious *** infectious diseasedgenetic disorder pairings include malaria and hemoglobinopathies,cholera and cystic fibrosis,tuberculosis and Tay-Sachs disease,mycotic abortions and phenylketonuria,infection by enveloped viruses and disorders of glycosylation,infection by filoviruses and NiemannePick C1 disease,as well as rabies and myasthenia *** also discuss two genetic conditions that lead to infectious disease hypersusceptibility,although we did not cover the large number of immunologic defects leading to infectious disease *** of the resistance-associated pairings(malaria/hemogloginopathies,cholera/cystic fibrosis,tuberculosis/Tay-Sachs,and mycotic abortions/phenylketonuria)appear to be a result of selection pressures in geographic regions in which the specific infectious agent is *** other pairings do not appear to be based on selection pressure and instead may be ***,research investigating these relationships may lead to treatment options for the aforementioned diseases by exploiting established mechanisms between genetically affected cells and infectious *** may prove invaluable as a starting point for research in the case of diseases that currently have no reliably curative treatments,e.g.,HIV,rabies,and Ebola.

关键词： Disease Infectious Pathogen Polymorphism Resistance Susceptibility

史蒂夫·鲍尔默传微软掌门人-世界第一CEO 1版

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