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Supertransport of excitons in atomically thin organic semiconductors at the 2D quantum limit

Light(Science & Applications) 2020年第1期9卷 907-919页

作者： Ankur Sharma Linglong Zhang Jonathan O.Tollerud Miheng Dong Yi Zhu Robert Halbich Tobias Vogl kun Liang Hieu T.Nguyen Fan Wang Shilpa Sanwlani stuart k.Earl Daniel Macdonald Ping koy Lam Jeffrey A.Davis Yuerui Lu Research School of Electrical Energy and Materials EngineeringCollege of Engineering and Computer ScienceThe Australian National UniversityCanberraACT 2601Australia Optical Sciences Centre Swinburne University of TechnologyHawthornVIC 3122Australia ARC Centre of Excellence for Future Low-Energy Electronics Technology Australia Centre for Quantum Computation and Communication Technology Department of Quantum ScienceResearch School of Physics and EngineeringThe Australian National UniversityActonACT 2601Australia School of Mechatronical Engineering Beijing Institute of TechnologyBeijing 100081China Institute for Biomedical Materials and Devices(IBMD) Faculty of ScienceUniversity of Technology SydneySydneyNSW 2007Australia

Long-range and fast transport of coherent excitons is important for the development of high-speed excitonic circuits and quantum computing ***,most of these coherent excitons have only been observed in some low-dimensional semiconductors when coupled with cavities,as there are large inhomogeneous broadening and dephasing effects on the transport of excitons in their native states in ***,by confining coherent excitons at the 2D quantum limit,we first observed molecular aggregation-enabled‘supertransport’of excitons in atomically thin two-dimensional(2D)organic semiconductors between coherent states,with a measured high effective exciton diffusion coefficient of ~346.9 cm^(2)/s at room *** value is one to several orders of magnitude higher than the values reported for other organic molecular aggregates and low-dimensional inorganic *** coupling to any optical cavities,the monolayer pentacene sample,a very clean 2D quantum system(~1.2 nm thick)with high crystallinity(J-type aggregation)and minimal interfacial states,showed superradiant emission from Frenkel excitons,which was experimentally confirmed by the temperature-dependent photoluminescence(PL)emission,highly enhanced radiative decay rate,significantly narrowed PL peak width and strongly directional in-plane *** coherence in monolayer pentacene samples was observed to be delocalised over~135 molecules,which is significantly larger than the values(a few molecules)observed for other organic thin *** addition,the supertransport of excitons in monolayer pentacene samples showed highly anisotropic *** results pave the way for the development of future high-speed excitonic circuits,fast OLEDs,and other optoelectronic devices.

关键词： transport quantum coherent

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青少年体育活动中的目标定向和自我决定理论:年龄和性别的差异

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天津体育学院学报 2001年第3期16卷 10-14页

作者：孙延林 C.k.John Wang stuart J.H.Biddle 天津体育学院实验中心天津300381 英国拉夫堡大学

以英格兰 82 4名初中生为调查对象 ,主要考察了在目标定向、行为调节、能力知觉和体育活动参与情况上的年龄和性别差异 ,并且采用动机变量预测校外体育活动参与情况。研究结果呈现出明显的性别差异 ,男生有较高的自我定向、自我决定动... 详细信息

以英格兰 82 4名初中生为调查对象 ,主要考察了在目标定向、行为调节、能力知觉和体育活动参与情况上的年龄和性别差异 ,并且采用动机变量预测校外体育活动参与情况。研究结果呈现出明显的性别差异 ,男生有较高的自我定向、自我决定动机和能力知觉。与此一致的结果是男生比女生更喜爱体育活动。对男生来说 ,自我定向、自我决定动机和能力知觉是参加体育活动的正相关预测指标 ,而任务定向和无动机与体育活动参与没有关系。对女生来说 ,任务定向和能力知觉能够积极预测体育活动参与情况。

关键词：动机青少年体育活动

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INSTABILITY OF HAGEN-POISEUILLE FLOW FOR NON-AXISYMMETRIC MODE

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Applied Mathematics and Mechanics(English Edition) 1989年第5期10卷 407-417页

作者：王发民 J. T. stuart (F. R. S.) Institute of Mech. Academia Sinica Beijing Imperial College U. K.

An investigation is described for instability problem of flow through a pipe of circular cross section. As a disturbance motion, we consider a general non-axisym-metric mode. An associated amplitude or modulation equation has been derived for this disturbance motion. This equation belongs to a diffusion *** coefficient of it can be negative while Reynolds number increases, because of the complex interaction between molecular diffusion and convection. The negative diffusivity, when it occurs, causes a concentration and focussing of energy within decaying slugs, acting as a role of reversing natural decays.

关键词： INSTABILITY OF HAGEN-POISEUILLE FLOW FOR NON-AXISYMMETRIC MODE

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泡沫乙烯-四氟乙烯共聚物(ETFE)的挤出

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电线电缆 1991年第5期 37-42页

作者： stuart k.Ronda 徐龙

介绍了“Tefzel”乙烯-四氟乙烯共聚物(ETFE)的含氟树脂气体连续发泡工艺。该工艺能有效地生产性能良好的泡沫塑料。该技术已用于气体含量高达70%的薄壁泡沫塑料和泡沫塑料-表面结皮制品的高速挤出。泡沫塑料通常用于对绞线,计算机网络... 详细信息

介绍了“Tefzel”乙烯-四氟乙烯共聚物(ETFE)的含氟树脂气体连续发泡工艺。该工艺能有效地生产性能良好的泡沫塑料。该技术已用于气体含量高达70%的薄壁泡沫塑料和泡沫塑料-表面结皮制品的高速挤出。泡沫塑料通常用于对绞线,计算机网络电缆的制造。

关键词：泡沫乙烯四氟乙烯挤出机电缆

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Onset temperature of intrinsic pinning in a REBCO coated conductor from critical current anisotropy

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Superconductivity 2022年第4期4卷 1-6页

作者： Nicholas M.Strickland Arya Ambadiyil Soman Martin W.Rupich stuart C.Wimbush Robinson Research Institute Victoria University of WellingtonWellingtonNew Zealand American Superconductor Corporation AyerMA 01432USA

The field‐angle dependence of the critical current in a REBa_(2)Cu_(3)O_(7) coated conductor has been measured over a fine range of temperatures from 15 k to 80 *** particular sample is demonstrated to have a very low fraction of extrinsic planar defects by its near‐isotropic critical current at 77 *** a representative magnetic field of 3 T we are able to track the emergence of the ab‐plane peak usually associated with intrinsic pinning and quantify its evolution with temperature by fitting to a maximum‐entropy *** are also able to observe the evolution of dip and peak features in the angle dependence of the power‐law index n with decreasing temperature and show that a dip appearing at 65 k is supplanted by a sharper positive peak from 50 *** combination of critical current and power‐law index temperature dependences shows the onset of intrinsic pinning at 50 k.

关键词： Intrinsic pinning REBCO coated conductors Maximum entropy N value

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Largely Suppressed Magneto-Thermal Conductivity and Enhanced Magneto-Thermoelectric Properties in PtSn_(4)

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Research 2020年第1期2020卷 769-776页

作者： Chenguang Fu Satya NGuin Thomas Scaffidi Yan Sun Rana Saha Sarah JWatzman Abhay kSrivastava Guowei Li Walter Schnelle stuart SPParkin Claudia Felser Johannes Gooth Max Planck Institute for Chemical Physics of Solids 01187 DresdenGermany Department of Physics University of CaliforniaBerkeleyCA 94720USA Department of Physics University of TorontoTorontoOntario M5S 1A7Canada Max Planck Institute of Microstructure Physics 06120 HalleGermany Department of Mechanical and Materials Engineering University of CincinnatiCincinnatiOH 45219USA Institute of Physics Martin Luther University Halle-Wittenberg06120 HalleGermany

Highly conductive topological semimetals with exotic electronic structures offer fertile ground for the investigation of the electrical and thermal transport behavior of ***,we find that the layer-structured Dirac semimetal PtSn4 exhibits a largely suppressed thermal conductivity under a magnetic *** low temperatures,a dramatic decrease in the thermal conductivity of PtSn4 by more than two orders of magnitude is obtained at 9 ***,PtSn_(4)shows both strong longitudinal and transverse thermoelectric responses under a magnetic *** power factor and Nernst power factor of approximately 80-100μW·cm^(-1)·k^(-2)are obtained around 15k in various magnetic *** a result,the thermoelectric figure of merit zT is strongly enhanced by more than 30 times,compared to that without a magnetic *** work provides a paradigm for the decoupling of the electron and hole transport behavior of highly conductive topological semimetals and is helpful for developing topological semimetals for thermoelectric energy conversion.

关键词： field particles topological

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Outcomes of microwave versus radiofrequency ablation for hepatocellular carcinoma:A systematic review and meta-analysis

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World Journal of Meta-Analysis 2022年第4期10卷 220-237页

作者： Myo Jin Tang Guy D Eslick John S Lubel Ammar Majeed Avik Majumdar William kemp stuart k Roberts Department of Gastroenterology Alfred HospitalMelbourne 3004VictoriaAustralia Monash Medical School Monash UniversityMelbourne 3004VictoriaAustralia Department of Statistics Clued Pty LtdSydney 2006New South WalesAustrali Central Clinical School Monash UniversityMelbourne 3004VictoriaAustralia Department of Gastroenterology Austin HospitalHeidelberg 3084VictoriaAustralia Department of Medicine Austin CampusUniversity of MedicineMelbourne 3084VictoriaAustralia

BACkGROUND Studies to date comparing outcomes of microwave ablation(MWA)with radiofrequency ablation(RFA)on patients with hepatocellular carcinoma have yielded conflicting results,with no clear superiority of one technique over the *** aim of this systematic review and meta-analysis was to compare the efficacy and safety of MWA with *** To perform a systematic review and meta-analysis comparing the efficacy and safety of MWA with *** A systematic literature search was performed using Ovid Medline,Embase,PubMed,Reference Citation Analysis,Cochrane Central and Cochrane Systematic Review databases,and Web of *** and full manuscripts were screened for inclusion utilising predefined inclusion and exclusion criteria comparing outcomes of MWA and RFA.A random-effects model was used for each ***-regression analysis was performed to adjust for the difference in follow-up period between the *** outcome measures included complete ablation(CA)rate,local recurrence rate(LRR),survival[local recurrence-free survival(LRFS),overall survival(OS)]and adverse *** A total of 42 published studies[34 cohort and 8 randomised controlled trials(RCT)]with 6719 patients fulfilled the selection *** was no significant difference in tumour size between the treatment *** rates between MWA and RFA groups were similar in prospective cohort studies[odds ratio(OR)0.95,95%confidence interval(CI)0.28–3.23]and RCTs(OR 1.18,95%CI 0.64–2.18).However,retrospective studies reported higher rates with MWA(OR 1.29,95%CI 1.06–1.57).Retrospective cohort studies reported higher OS(OR 1.54,95%CI 1.15–2.05 and lower LRR(OR 0.67,95%CI 0.51–0.87).No difference in terms of LRFS or 30-d mortality was observed between both *** had an increased rate of adverse respiratory events when compared to RFA(OR 1.99,95%CI 1.07–3.71,P=0.03).CONCLUSION MWA achieves similar CA rates and as good or better longer-term outcomes in relation to LRR and O

关键词： Microwave ablation Radiofrequency ablation Hepatocellular carcinoma Survival Recurrence Meta-analysis

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生物矿化法制备平片状YBCO粉末的超导连接性及补氧退火对超导连结性影响的研究

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人工晶体学报 2014年第3期43卷 543-549页

作者：张子立索红莉 Wimbush stuart kursumovic Ahmed 毛磊 MacManus-Driscoll Judith 北京工业大学国家教育部功能材料重点实验室北京100024 剑桥大学材料与冶金系

本文报道了用生物矿化法制备平片状YBCO粉末的过程，并通过对Bean模型参数选择研究了YBCO粉末内部晶粒间的超导连接性。结果表明在这种平片状YBCO粉末内部存在有自发的晶粒间超导连接，这种超导连接存在于由平片状YBCO晶粒构成的具有相... 详细信息

本文报道了用生物矿化法制备平片状YBCO粉末的过程，并通过对Bean模型参数选择研究了YBCO粉末内部晶粒间的超导连接性。结果表明在这种平片状YBCO粉末内部存在有自发的晶粒间超导连接，这种超导连接存在于由平片状YBCO晶粒构成的具有相似生长方向的晶粒簇当中，而在77k下，超导连接区域平均包含3～5个平片状晶粒。本文还就补氧退火中烧结温度和保温时间对平片状YBCO粉末超导连接性的影响进行了系统的研究。

关键词：生物矿化法超导连接涂层超导 YBCO

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ELECTRORETINOGRAPHIC INTENSITY-RESPONSE FUNCTION IN RETINAL DISEASE

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中华医学杂志(英文版) 1985年第4期98卷 250-256页

作者：吴乐正 Robert W Massof stuart J starr Zhongshan Ophthalmologic Center Zhongshan Medical College Guangzhou China

We measured the electroretinographic (ERG)intensity-response function and the values of Rmax,k and n in various retinal *** measurement showed many *** values were abnormally decreased in retinitis *** in cone dystrophy or macular degeneration,the Rmax was normal,and the n or k values were ***,in order to increase the clinical information value of the ERG in retinal disorders,we consider it necessary to further characterize the various parameter changes in these rctinal diseases.

关键词：

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New solutions for combatting implant bacterial infection based on silver nano-dispersed and gallium incorporated phosphate bioactive glass sputtered films:A preliminary study

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Bioactive Materials 2022年第2期7卷 325-340页

作者： B.W.stuart G.E.Stan A.C.Popa M.J.Carrington I.Zgura M.Necsulescu D.M.Grant m.grantadvanced materials research group faculty of engineeringuniversity of nottinghamnottinghamng72rduk national institute of materials physics magurelero077125romania army centre for medical research bucharestro010195romania

Ag/Ga were incorporated into resorbable orthopaedic phosphate bioactive glasses(PBG,containing P,Ca,Mg,Na,and Fe)thin films to demonstrate their potential to limit growth of Staphylococcus aureus and Escherichia coli in post-operative prosthetic *** target consecutive co-sputtering was uniquely employed to produce a 46 nm Ag:PBG composite observed by high resolution TEM to consist of uniformly dispersed~5 nm metallic Ag nano-particles in a glass ***^(3+)was integrated into a phosphate glass preform target which was magnetron sputtered to film thicknesses of~400 or 1400 *** coatings exhibited high surface energy of 75.4-77.3 mN/m,attributed to the presence of hydrolytic P-O-P structural surface *** profiles obtained in deionized water,nutrient broth and cell culture medium showed varying ion release profiles,whereby Ga release was measured in 1400 nm coating by ICP-MS to be~6,27,and 4 ppm respectively,fully dissolving by 24 *** of Ag nanoparticles was only observed in nutrient broth(~9 ppm by 24 h).Quantification of colony forming units after 24 h showed encouraging antibacterial efficacy towards both ***(4-log reduction for Ag:PBG and 6-log reduction for Ga-PBG≈1400 nm)and ***(5-log reduction for all physical vapour deposited layers)*** Hs27 fibroblast and mesenchymal stem cell line in vitro tests indicated good cytocompatibility for all sputtered layers,with a marginal cell proliferation inertia in the case of the Ag:PBG composite thin *** study therefore highlights the(i)significant manufacturing development via the controlled inclusion of metallic nanoparticles into a PBG glass matrix by dual consecutive target co-sputtering and(ii)potential of PBG resorbable thin-film structures to incorporate and release cytocompatible/antibacterial *** architectures showed prospective bio-functional performance for a future generation of endo-osseous implant-type coatings.

关键词： Phosphate bioactive glass Silver Gallium Antibacterial Implant coating Magnetron sputtering

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