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Regulating the Electrical and Mechanical Properties of TaS_(2) Films via van der Waals and Electrostatic Interaction for High Performance Electromagnetic Interference Shielding

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Nano-Micro Letters 2023年第7期15卷 278-292页

作者： Fukang Deng Jianhong Wei Yadong Xu Zhiqiang Lin Xi Lu yan-Jun Wan Rong Sun Ching-Ping wong Yougen Hu Shenzhen Institute of Advanced Electronic Materials Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055People’s Republic of China Shenzhen Geim Graphene Center Institute of Materials ResearchShenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055People’s Republic of China School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGA 30332USA

Low-dimensional transition metal dichalcogenides(TMDs) have unique electronic structure, vibration modes, and physicochemical properties, making them suitable for fundamental studies and cutting-edge applications such as silicon electronics, optoelectronics, and bioelectronics. However, the brittleness, low toughness,and poor mechanical and electrical stabilities of TMD-based films limit their application. Herein, a TaS_(2) freestanding film with ultralow void ratio of 6.01% is restacked under the effect of bond-free van der Waals(vdW) interactions within the staggered 2H-TaS_(2) *** restacked films demonstrated an exceptionally high electrical conductivity of 2,666 S cm^(-1), electromagnetic interference shielding effectiveness(EMI SE) of 41.8 dB, and absolute EMI SE(SSE/t) of 27,859 dB cm^(2) g^(-1), which is the highest value reported for TMD-based materials. The bond-free vdW interactions between the adjacent 2H-TaS_(2) nanosheets provide a natural interfacial strain relaxation, achieving excellent flexibility without rupture after 1,000 bends. In addition, the TaS_(2) nanosheets are further combined with the polymer fibers of bacterial cellulose and aramid nanofibers via electrostatic interactions to significantly enhance the tensile strength and flexibility of the films while maintaining their high electrical conductivity and EMI *** work provides promising alternatives for conventional materials used in EMI shielding and nanodevices.

关键词： 2D transition metal dichalcogenides 2H-TaS_(2) Flexibility Electromagnetic interference shielding

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On the question of quark confinement in the Abelian U(1)QED gauge interaction

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Frontiers of physics 2023年第6期18卷 39-91页

作者： Cheuk-Yin wong Physics Division Oak Ridge National Laboratory*Oak RidgeTN 37831USA

If we approximate light quarks as massless and apply the Schwinger confinement mechanism to light quarks,we will reach the conclusion that a light quark and its antiquark will be confined as a boson in the Abelian U(1)QED gauge interaction in(1+1)D,as in an open *** the work of Coleman,Jackiw,and Susskind,we can infer further that the Schwinger confinement mechanism persists even for massive quarks in(1+1)*** such a QED-confined one-dimensional open string in(1+1)D be the idealization of a flux tube in the physical world in(3+1)D,similar to the case of QCD-confined open string?If so,the QED-confined bosons may show up as neutral QED mesons in the mass region of many tens of MeV[***.C 81,064903(2010)&*** Energy Phys.2020(8),165(2020)].Is it ever possible that a quark and an antiquark be produced and interact in QED alone to form a confined QED meson?Is there any experimental evidence for the existence of a QED meson(or QED mesons)?The observations of the anomalous soft photons,the X17 particle,and the E38 particle suggest that they may bear the experimental evidence for the existence of such QED *** confirmation and investigations on the X17 and E38 particles will shed definitive light on the question of quark confinement in QED in(3+1)*** of quark confinement in the QED interaction are discussed.

关键词： quark confinement QCD interaction QED interaction Schwinger model open string model of mesons QCD molecular states

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A landscape of β-Ga_(2)O_(3) Schottky power diodes

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Journal of Semiconductors 2023年第9期44卷 47-56页

作者： Man Hoi wong Department of Electronic and Computer Engineering Hong Kong University of Science and TechnologyClear Water BayKowloonHong KongChina

β-Ga_(2)O_(3) Schottky barrier diodes have undergone rapid progress in research and development for power electronic *** paper reviews state-of-the-art β-Ga_(2)O_(3) rectifier technologies,including advanced diode architectures that have enabled lower reverse leakage current via the reduced-surface-field *** device properties including onresistance,breakdown voltage,rectification ratio,dynamic switching,and nonideal effects are summarized for the different *** results on the high-temperature resilience of β-Ga_(2)O_(3) Schottky diodes,together with the enabling thermal packaging solutions,are also presented.

关键词： β-Ga_(2)O_(3) Schottky diodes power device edge termination nickel oxide

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The role of vascular endothelial growth factor in ossification

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International Journal of Oral Science 2012年第2期4卷 64-68页

作者： yan-Qi yang Ying-Ying Tan Ricky wong Alex Wenden Lin-Kun Zhang A bakr M Rabie Department of Orthodontics Faculty of Dentistry The University of Hong Kong Hong Kong China Unit Pakar Ortodontik Klinik Pergigian Poliklinik Komuniti Mak MandinMalaysia Department0fOrfhodonflcs Tlanj}nsfomafoI.gicalH.spJcaJ.iNankaiunIversityTianjinchinaand PrivatePracticeC0rrespondence:DrYQyang DepartmentDfOrthodonticsFacultyofDentIstryTheUnlversity硝HongKong34HospnalRoadHOngK0ngSARChinaE—maiJ=yan副anq@hkuhk

Osteogenesis and angiogenesis are two closely correlated processes during bone growth, development, remodelling and repair. Vascular endothelial growth factor （VEGF） is an essential mediator during the process of angiogenesis. Based on an extensive literature search, which was carried out using the PubMed database and the keywords of osteogenesis, VEGF, endochondral ossification and intramembranous ossification, this manuscript reviews the role of VEGF in ossification, with emphasis on its effect in endochondral and intramembranous ossification. Osteogenesis and angiogenesis are closely correlated processes. VEGF acts as an essential mediator durin~ these processes. It not only functions in bone an^io^enesis but also in various aspects of bone develooment.

关键词： endochondral ossification intramembranous ossification osteogenesis vascular endothelial growth factor

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The electroweak monopole–antimonopole pair in the standard model

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Communications in Theoretical Physics 2024年第3期76卷 113-119页

作者： Dan Zhu Khai-Ming wong Guo-Quan wong School of Physics Universiti Sains Malaysia11800 USMPenangMalaysia

We present the first numerical solution that corresponds to a pair of Cho–Maison monopoles and antimonopoles(MAPs) in the SU(2) × U(1) Weinberg–Salam(WS) *** monopoles are finitely separated,while each pole carries a magnetic charge ±4π/*** positive pole is situated in the upper hemisphere,whereas the negative pole is in the lower *** Cho–Maison MAP is investigated for a range of Weinberg angles,0.4675≤ tan θ_(W)≤10,and Higgs self-coupling,0 ≤ β ≤ *** magnetic dipole moment(μm) and pole separation(d_(z)) of the numerical solutions are calculated and *** total energy of the system,however,is infinite due to point singularities at the locations of monopoles.

关键词： magnetic monopole Cho-Maison monopole Weinberg-Salam model

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Unc-51-like kinase(ULK)complex-independent autophagy induced by hypoxia

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Protein & Cell 2019年第5期10卷 376-381页

作者： yan Feng Helen H.Kang Pui-Mun wong Minghui Gao Ping Wang Xuejun Jiang Shanghai Tenth People's Hospital of Tongji University School of MedicineTongji UniversityShanghai 200072China Cell Biology Program Memorial Sloan-Kettering Cancer CenterNew YorkNY 10065USA Immunology and Microbial Pathogenesis Program Weill Cornell Graduate School of Medical SciencesNew YorkNY 10065USA Human Genetics and Embryology Laboratory Agency for ScienceTechnology and ResearchInstitute of Medical BiologySingapore 138632Singapore HIT Center for Life Sciences The School of Life Sciences and TechnologyHarbin Institute of TechnologyHarbin 150001China

Dear Editor,Macroautophagy(referred to as autophagy herein)is an evolutionarily con served,lysosomal degradatio n process by which cells rid themselves of aggregated proteins and damaged organelles(He and Klionsky,2009).This process involves a finely orchestrated molecular pathway comprising a plethora of ATG proteins essential for autophagosome *** mammalian Unc-51-like kinase(ULK)complex plays an essential role to initiate canonical autophagy pathway by relaying upstream nutrient and stress signals to downstream autophagy machinery(Mizushima,2010;wong et al.,2013).

关键词： Unc-51-like kinase ULK hypoxia

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QUASI-INTERPOLATING OPERATORS AND THEIR APPLICATIONS IN HYPERSINGULAR INTEGRALS

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Journal of Computational Mathematics 1998年第4期16卷 337-344页

作者： wong, RH Lu, Y Dalian Univ Technol Inst Math Sci Dalian 116024 Peoples R China

The purpose of this paper is to propose and study a class of quasi-interpolating operators in multivariate spline space S-1/2(Delta(mn)(2*)) on non-uniform type-2 triangulation. Based on the operators, we construct cubature formula for two-dimensional hypersingular integrals. Some computing work have been done and the results are quite satisfactory.

关键词： hypersingular integral finite-part integral quasi-interpolating operator non-uniform type-2 triangulation

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RF channel performance assessment for a multiple carrier millimeter-wave communication system

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Progress in Natural Science:Materials International 2004年第10期14卷 45-48页

作者： Thomas wong Chicago Department of Electrical and Computer Engineering Illinois Institute of Technology Illinois60616 U.S.A

Channel capacity,system versatility and ease of maintenance are factors of prime concern in future generations of wire-less communication *** a result,millimeter-wave can offer considerable advantages in providing broadband *** and noise effects,including parametric fluctuations,are two significant causes for signal degradation in broadband communication *** methods to assess the performance of an RF channel in a multi-carrier system are *** measuring the forward transfer func-tion from transmitter IF to receiver IF as the frequency is swept across the channel bandwidth,characteristics such as gain flatness,chan-nel dispersion,and saturation effects are *** evaluate the ability of the communication link in preserving the synchronization be-tween two carriers,their heterodyned spectrum at the receiver IF output is *** measurement methods employ standard equip-ment and have been found to be effective when applied to a multi-carrier millimeter-wave system with over1GHz instantaneous band-width.

关键词： millimeter-wave communication system multiple carrier intermodulation carrier fluctuation synchronization

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Protein Interactome Analysis for Countering Pathogen Drug Resistance

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Journal of Computer Science & Technology 2010年第1期25卷 124-130页

作者： Limsoon wong Guimei Liu School of Computing National University of Singapore

Drug-resistant varieties of pathogens are now a recognized global threat. Insights into the routes for drug resistance in these pathogens are critical for developing more effective antibacterial drugs. A systems-level analysis of the genes, proteins, and interactions involved is an important step to gaining such insights. This paper discusses some of the computational challenges that must be surmounted to enable such an analysis; viz., unreliability of bacterial interactome maps, paucity of bacterial interactome maps, and identification of pathways to bacterial drug resistance.

关键词： protein complexes protein interactomes drug resistance infectious diseases

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Aurone derivatives as Vps34 inhibitors that modulate autophagy

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Acta Pharmaceutica Sinica B 2019年第3期9卷 537-544页

作者： Guodong Li Joshua William Boyle Chung-Nga Ko Wu Zeng Vincent Kam Wai wong Jian-Bo Wan Philip Wai Hong Chan Dik-lung Ma Chung-Hang Leung State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical SciencesUniversity of MacaoMacao999078China School of Chemistry Monash UniversityClayton3800Australia Department of Chemistry Hong Kong Baptist UniversityHong Kong999077China State Key Laboratory of Quality Research in Chinese Medicine Macao University of Science and TechnologyMacao999078China Department of Chemistry University of WarwickCoventry CV47ALUK

We report in this study the identification of a natural product-like antagonist(1a) of Vps34 as a potent autophagy modulator via structure-based virtual screening. Aurone derivative 1a strongly inhibited Vps34 activity in cell-free and cell-based assays. Significantly, 1a prevents autophagy in human cells induced either by starvation or by an mT OR inhibitor. In silico modeling and kinetic data revealed that 1a could function as an ATP-competitive inhibitor of Vps34. Moreover, it suppressed autophagy in vivo and without inducing heart or liver damage in mice. 1a could be utilized as a new motif for more selective and efficacious antagonists of Vps34 for the potential treatment of autophagy-related human diseases.

关键词： Autophagy Natural products Vps34 Inhibitor Structure-based virtual screening Vesicle trafficking Heart or liver damage Aurone derivative

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