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Phase constitution of the noble metal thin-film complex solid solution system Ag-Ir-Pd-Pt-Ru in dependence of elemental compositions and annealing temperatures

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Nano Research 2022年第6期15卷 4827-4836页

作者： bin xiao xiao Wang Alan Savan Alfred Ludwig Materials Discovery and Interfaces Institute for MaterialsRuhr University Bochum44780 BochumGermany Zentrum für Grenzflächendominierte Höchstleistungswerkstoffe(ZGH) Ruhr University Bochum44780 BochumGermany

Multiple-principal element alloys hold great promise for multifunctional material discovery(e.g.,for novel electrocatalysts based on complex solid solutions)in a virtually unlimited compositional ***,the phase constitution of the noble metal system Ag-Ir-Pd-Pt-Ru was investigated over a large compositional range in the quinary composition space and for different annealing temperatures from 600 to 900°C using thin-film materials ***-dependent X-ray diffraction mapping of the asdeposited thin-film materials library indicates different phases being present across the composition space(face-centered cubic(fcc),hexagonal close packed(hcp)and mixed fcc+hcp),which are strongly dependent on the Ru *** general,low Ru contents promote the fcc phase,whereas high Ru contents favor the formation of an hcp solid-solution ***,a temperature-induced phase transformation study was carried out for a selected measurement area of fcc-Ag_(5)Ir_(8)Pd_(56)Pt_(8)Ru_(23).With increasing temperature,the initial fcc phase transforms to an intermediate C14-type Laves phase at 360°C,and then to hcp when the temperature reaches 510°*** formation and disappearance of the hexagonal Laves phase,which covers a wide temperature range,plays a crucial role of bridging the fcc to hcp phase *** obtained composition,phase and temperature data are transformed into phase maps which could be used to guide theoretical studies and lay a basis for tuning the functional properties of these materials.

关键词： noble metal high-entropy alloys phase transformation combinatorial synthesis and high-throughput characterization

Heat Recovery from Automotive Exhaust Using Heat Pipes with Limited Fluid Charge

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Frontiers in Heat and Mass Transfer 2024年第1期22卷 35-48页

作者： bin xiao Department of Engineering Technology Texas State UniversitySan Marcos78666USA

Experiments were conducted in this study to examine the thermal performance of a thermosyphon,made from Inconel alloy 625,could recover waste heat from automobile exhaust using a limited amount of *** thermosyphon has an outer diameter of 27 mm,a thickness of 2.6 mm,and an overall length of 483 *** study involved directing exhaust gas onto the *** length includes a 180-mm evaporator,a 70-mm adiabatic section,a 223-mm condenser,and a 97-mm finned *** study examined the thermal performance of the thermosyphon under exhaust flow rates ranging from 0–10 g/sec and temperatures varying from 300℃–900℃.The influence of three parameters—inclination angle(5°–45°),water mass(2–5.3 g),and the quantity of non-condensable gas Argon(0–0.6 g)—was investigated to assess their impacts on the thermosyphon’s thermal *** experimental findings revealed that with 3 g of water and 0.0564 g of argon in the thermosyphon,the condenser reached its highest temperature at around 200℃.The ideal fuel loading rate for the thermosyphon falls between 0.2 and 0.7 g/***,as inclination angles rise,outer wall temperatures of the thermosyphon *** is attributed to the explicit expansion of the effective heating area within the evaporation section,coupled with an amplified gravitational component of the water ***,an upsurge in the quantity of non-condensable gas(NCG)can mitigate temperature gradients on the outer wall,resulting in a decline in the thermosyphon’s *** insulation applied to the adiabatic section demonstrated efficacy in augmenting temperature gradients on the outer wall,thereby improving the overall performance of the *** the water charge within the thermosyphon increases,there is a corresponding rise in heat transfer rates both from the exhaust to the thermosyphon and from the thermosyphon to the fuel.

关键词： Thermosyphon heat recovery system auto exhaust parametric effect

Hexagonal packing lattice formed by functionalized gold nanoparticles

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Rare Metals 2022年第11期41卷 3858-3864页

作者： xiao-bin Mang Lian-Qi Yao Department of Research and Development Shanghai YS Information Technology Co.LtdShanghai200240China Department of Quality Inspection Shanghai Hutchison PharmaceuticalsShanghai200331China

Nanostructures formed by functionalized gold nanoparticles(GNPs)were studied using X-ray diffraction(XRD).Two systems of such functionalized GNPs,one with gold core grafted by both ligand(rod-like liquid crystalline molecule)and co-ligand(alkylthiols)and the other one with only ligand grafted,were *** presence of ligands and co-ligands increases the mobility of GNPs and induces long-range ordered packing style with the change of *** both systems,functionalized GNPs form columns first and then pack on hexagonal *** is found that the correlation along column direction is dependent on surface conditions of GNPs,which is observed for system with only ligand *** on experimental results,size of gold core and number of ligand and co-ligand belonging to each gold core were *** intensities and electron density map of each structure were simulated,which are evidently similar to experimental ***,structure model was proposed and *** results help us to understand and control the way that organic molecules affect the organization of nanoparticles,and facilitate the design of new hybrid materials.

关键词： Nanostructures Gold nanoparticles Simulation

Grazing-incidence small-angle X-ray scattering property of double-layered gold nanoparticle arrays

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Rare Metals 2022年第10期41卷 3585-3590页

作者： xiao-bin Mang Lian-Qi Yao Department of Research and Development Shanghai YS Information Technology Co.LtdShanghai200240China Department of Quality Inspection Shanhai Hutchison PharmaceuticalsShanghai200331China

Gold nanoparticle arrays fabricated via layerby-layer technique were investigated using grazing-incidence small-angle X-ray scattering(GISAXS) *** containing two gold nanoparticle layers that were separated by 5,11,15 and 21 poly electrolyte(PE) interlayers were *** using different X-ray incident angles,correlations of gold nanoparticles(GNPs) in the same layer and in two different layers were *** is found that both sideway correlations between GNPs in the same layer and vertical correlation between two gold nanoparticle layers depend on the thickness of PE *** to sideway correlation,the size of GNPs is determined to be(13.0±0.5) nm in all of the four samples,which was also proved by scanning electron microscopy(SEM) and theoretical calculation of form factor of spherical *** vertical correlation,distance between two gold nanoparticle layers was determined for sample with 11,15 and 21 PE *** distances can be reasonably explained with the number of PE layers and the thickness of single PE *** results indicate that by repeated depositing of oppositely charged PE layers,a true three-dimensional(3 D) nanostructure can eventually be designed.

关键词： Gold nanoparticle array 3D nanostructure Grazing-incidence small-angle X-ray scattering Form factor Nanocomposites

Instanton Effects on Gluon Propagator

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Communications in Theoretical Physics 2002年第10期38卷 449-454页

作者： FAN xiao-bin WANG Qing Department of Physics Tsinghua University Beijing 100084 China Department of Physics Tsinghua University Beijing 100084 China Institute of Theoretical Physics Academia Sinica Beijing 100080 China

Gluon propagator is investigated for pure Yang-Mills SU(3) gauge theory in field-strength approach. It isfound that instantohs provide a homogeneous solid-like medium background which generates finite nonzero momentum... 详细信息

关键词： gluon propagator, instanton

Pharmaceutical innovation and advancement of Clinical therapy and public health:enlightenment from artemisinin development

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Chinese Journal of Natural Medicines 2016年第1期14卷 3-4页

作者： WANG xiao-bin Department of Population Family and Reproductive HealthJohns Hopkins University Bloomberg School of Public Health

The discovery of artemisinin is significant because not only it is an innovative new drug,but also its treatment of malaria has saved millions of lives worldwide,especially in(tropical)developing *** 2015 Nobel Prize in Physiology or Medicine was awarded to Professor Tu You-You,a scientist from China,who made this seminal *** is one of the most prevalent

关键词：临床治疗药物创新青蒿素公共卫生诺贝尔生理学或医学奖世界卫生组织亚热带地区发展中国家

AN EFFECTIVE WAY TO CONTROL CONGESTION FOR RTI WITH HYBRID ARCHITECTURE

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International Journal of Modeling, Simulation, and Scientific Computing 2014年第1期5卷 19-34页

作者： xiao bin SUN HONGBO xiao TIANYUAN Department of Automation Tsinghua University Beijing 100084P.R.China Academy of Equipment Beijing 101416 P.R.China

Congestions brought by data explosion may suffer system performance or even cause fatal errors in large-scale simulation *** paper analyzes the reasons of generating congestion with queuing theory,and proposes a novel congestion control approach for RTI with hybrid architecture,including framework,sampling policy,queue length predicting,and congestion control *** framework promotes the usage of federate resources,and improves the performance of HLA simulation systems by dynamically distributing loads on RTIG and LRCs(Local RTI Components).At last,experimental results say that the proposed approach is a flexible,simple and efficient way to control congestion in RTI with hybrid architecture.

关键词： High Level Architecture(HLA) Run-Time Infrastructure(RTI) congestion control

Entire solutions of a certain type of functional-differential equations

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Applied Mathematics(A Journal of Chinese Universities) 2013年第2期28卷 138-146页

作者： ZHANG xiao-bin YI Hong-xun College of Science Civil Aviation University of China Department of Mathematics Shandong University

In this paper, we shall utilize Nevanlinna value distribution theory and normality theory to study the solvability of a certain type of functional-differential equations. We also consider the solutions of some nonline... 详细信息

关键词： Entire solution functional-differential equation growth order normal family.

The performance of a z-level ocean model in modeling the global tide

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Acta Oceanologica Sinica 2016年第11期35卷 35-43页

作者： xiao bin QIAO Fangli SHU Qi College of Oceanic and Atmospheric Sciences Ocean University of China The First Institute of Oceanography State Oceanic Administration Laboratory for Regional Oceanography Numerical Modeling Qingdao National Laboratory for Marine Science and Technology

The performance of a z-level ocean model, the Modular Ocean Model Version 4（MOM4）, is evaluated in terms of simulating the global tide with different horizontal resolutions commonly used by climate models. The performance using various sets of model topography is evaluated. The results show that the optimum filter radius can improve the simulated co-tidal phase and that better topography quality can lead to smaller rootmean square（RMS） error in simulated tides. Sensitivity experiments are conducted to test the impact of spatial resolutions. It is shown that the model results are sensitive to horizontal resolutions. The calculated absolute mean errors of the co-tidal phase show that simulations with horizontal resolutions of 0.5° and 0.25° have about 35.5% higher performance compared that with 1° model resolution. An internal tide drag parameterization is adopted to reduce large system errors in the tidal amplitude. The RMS error of the best tuned 0.25° model compared with the satellite-altimetry-constrained model TPXO7.2 is 8.5 cm for M_2. The tidal energy fluxes of M_2 and K_1 are calculated and their patterns are in good agreement with those from the TPXO7.2. The correlation coefficients of the tidal energy fluxes can be used as an important index to evaluate a model skill.

关键词： global tide Modular Ocean Model global tidal energy flux