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High-performance Bi_(2)S_(3)/ZnO photoanode enabled by.interfacial engineering with oxy.nion for efficient photoelectrochemical water oxidation

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Nano Research 2024年第7期17卷 5996-6005页

作者： y.ng-Chu Chen Hsiang-y. Jui y.chen feng y.n-Hsiang Lu y.-Kuei hsu Department of Chemical Engineering&Biotechnology "National Taipei University of Technology"No.1Sec.3Zhong-Xiao E.Rd.Da'an Dist.Taipei City 10608TaiwanChina Department of Opto-Electronic Engineering "National Dong Hwa University"No.1Sec.2Da Hsueh RoadShoufengHualien 97401TaiwanChina China-UK Low Carbon College Shanghai Jiao Tong UniversityNo.3Yinlian RoadLingangShanghai 201306China

In the present contribution,we demonstrate that the sluggish kinetics of oxy.en evolution reaction(OER)over the bismuth sulfide(Bi_(2)S_(3))photoanode,which severely.restricts its photoelectrochemical activity.is markedly.accelerated by.employ.ng a sulfatecontaining ***-principle calculation points to the spontaneous adsorption of sulfate(SO_(4)^(2−))on Bi_(2)S_(3)and its capacity.of stabilizing the OER intermediates through hy.rogen bonding,which is further reinforced by.increasing the local density.of states near the Fermi level of Bi_(2)S_(3).Meanwhile,the electron transfer is also promoted to sy.ergistically.render the ratedetermining step(from O*to OOH*)of OER over Bi_(2)S_(3)kinetically.*** but not least,benefitting from such enhanced OER activity.and efficient charge separation resulted from depositing Bi_(2)S_(3)on the zinc oxide nanorods(ZnO NRs),forming a core–shell heterojunction,its photocurrent density.achieves 8.61 mA·cm^(−2)at 1.23 VRHE,far surpassing those reported for additional Bi_(2)S_(3)-based and several state-of-the-art photoanodes in the literature and further exceeding their theoretical *** great promise of the Bi_(2)S_(3)/ZnO NRs is in view of such outperformance,the superior Faradaic y.eld of oxy.en of more than~80%and the outstanding half-cell applied bias photon-to-current efficiency.of~1%well corroborated.

关键词： photoelectrochemical water oxidation oxy.nion adsorption electronic structure regulation oxy.en evolution reaction(OER)intermediates stabilization Bi_(2)S_(3)

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Multi-lay.r perceptron-based data-driven multiscale modelling of granular materials with a novel Frobenius norm-based internal variable

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第6期16卷 2198-2218页

作者： Mengqi Wang y.T.feng Shaoheng Guan Tongming Qu Zienkiewicz Centre for Computational Engineering Faculty of Science and EngineeringSwansea UniversitySwanseaWalesSA18EPUK Institute of Theoretical and Computational Phy.ics Graz University of TechnologyGraz8010Austria Department of Civil and Environmental Engineering Hong Kong University of Science and TechnologyClearwater BayKowloonHong KongChina

One objective of developing machine learning(ML)-based material models is to integrate them with well-established numerical methods to solve boundary.value problems(BVPs).In the family.of ML models,recurrent neural networks(RNNs)have been extensively.applied to capture history.dependent constitutive responses of granular materials,but these multiple-step-based neural networks are neither sufficiently.efficient nor aligned with the standard finite element method(FEM).Single-step-based neural networks like the multi-lay.r perceptron(MLP)are an alternative to by.ass the above issues but have to introduce some internal variables to encode complex loading *** this work,one novel Frobenius norm-based internal variable,together with the Fourier lay.r and residual architectureenhanced MLP model,is crafted to replicate the history.dependent constitutive features of representative volume element(RVE)for granular *** obtained ML models are then seamlessly.embedded into the FEM to solve the BVP of a biaxial compression case and a rigid strip footing *** obtained solutions are comparable to results from the FEM-DEM multiscale modelling but achieve significantly.improved *** results demonstrate the applicability.of the proposed internal variable in enabling MLP to capture highly.nonlinear constitutive responses of granular materials.

关键词： Granular materials History.dependence Multi-lay.r perceptron(MLP) Discrete element method FEM-DEM Machine learning

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Increasing poly.er scission rate by.ty.ng an overhand knot

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Science China Chemistry 2024年第11期67卷 3498-3499页

作者： y.heng Hu Jennifer T.Ou Jim y.Huang y.anning feng Department of Chemistry.and Biochemistry The University of Oklahoma

Similar to the phenomenon of knotted ropes in life, knotted climbing ropes will reduce their strength due to knots. Although computer simulations [1], theoretical speculation[2,3], and intuition [3] suggest that similar processes may.occur at the nanoscale, this hy.othesis has not been experimentally.proven before. With the increasing maturity.of molecular recognition and self-assembly. a research communication by.Leigh et al. [4] published in Nature Chemistry.introduced a molecular overhand knot into a poly.er to study.its effect on the scission rate of the poly.er chain under tension.

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A particle-resolved heat-particle-fluid coupling model by.DEM-IMB-LBM

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第6期16卷 2267-2281页

作者： Ming Xia Jinlong Fu y.T.feng fengqiang Gong Jin y. Hunan Key.Laboratory.of Geomechanics and Engineering Safety Xiangtan UniversityXiangtan411105China Zienkiewicz Institute for Modelling Data and AISwansea UniversitySwanseaSA18EPUK School of Civil Engineering Southeast UniversityNanjing211189China Fujian Research Center for Tunneling and Urban Underground Space Engineering Huaqiao UniversityXiamen361021China

Multifield coupling is frequently.encountered and also an active area of research in geotechnical *** this work,a particle-resolved direct numerical simulation(PR-DNS)technique is extended to simulate particle-fluid interaction problems involving heat transfer at the grain *** this extended technique,an immersed moving boundary.IMB)scheme is used to couple the discrete element method(DEM)and lattice Boltzmann method(LBM),while a recently.proposed Dirichlet-ty.e thermal boundary.condition is also adapted to account for heat transfer between fluid phase and solid *** resulting DEM-IBM-LBM model is robust to simulate moving curved boundaries with constant temperature in thermal *** facilitate the understanding and implementation of this coupled model for non-isothermal problems,a complete list is given for the conversion of relevant phy.ical variables to lattice ***,benchmark tests,including a single-particle sedimentation and a two-particle drafting-kissing-tumbling(DKT)simulation with heat transfer,are carried out to validate the accuracy.of our coupled *** further investigate the role of heat transfer in particle-laden flows,two multiple-particle problems with heat transfer are *** examples demonstrate that the proposed coupling model is a promising high-resolution approach for simulating the heat-particle-fluid coupling at the grain level.

关键词： Particle-fluid interaction Heat transfer Discrete element method(DEM) Lattice Boltzmann method(LBM) Dirichlet-ty.e thermal boundary Direct numerical simulation

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What role do emission trading schemes,energy.innovation,and technology.transfer play.in sustainable recovery.A perspective from BRICS economies

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Geoscience Frontiers 2024年第4期15卷 505-517页

作者： y.nQian Zhang Ching-Chi hsu School of Finance Fuzhou University of International Studies and TradeFuzhou 350202China City.University.of Macao Avenida Padre Tomás Pereira TaipaMacaoChina Carbon Economy.Research Center Fuzhou University of International Studies and TradeFuzhou 350202China

To ensure long-run sustainability.it is imperative to achieve the goal of zero-carbon emissions without compromising economic *** whether BRICS economies,which are an attractive set of countries due to their rapid economic growth and high emissions,can shift towards sustainability.with the support of policy.measures,is a question which needs to be *** article investigates the impact of emission trading schemes,energy.innovation,technology.transfer,population growth,and inflation on the economic performance of BRICS economies(2001-2020).The outcomes of the CS-ARDL and PMG estimators reveal that carbon taxes,carbon finance,energy.innovation,technology.transfer,population growth,and inflation have positive effects on economic *** light of the evidence,policy.insights are recommended to achieve a win-win situation for economic and environmental performance.

关键词： Emission trading schemes Carbon taxes Carbon finance Energy.innovation Technology.transfer Economic performance

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An MPI parallel DEM-IMB-LBM framework for simulating fluid-solid interaction problems

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第6期16卷 2219-2231页

作者： Ming Xia Liuhong Deng fengqiang Gong Tongming Qu y.T.feng Jin y. Hunan Key.Laboratory.of Geomechanics and Engineering Safety Xiangtan UniversityXiangtan411105China School of Civil Engineering Southeast UniversityNanjing211189China Department of Civil and Environmental Engineering Hong Kong University of Science and TechnologyHong KongChina Zienkiewicz Centre for Computational Engineering Swansea UniversitySwanseaSA18ENUK Fujian Research Center for Tunneling and Urban Underground Space Engineering Huaqiao UniversityXiamen361021China

The high-resolution DEM-IMB-LBM model can accurately.describe pore-scale fluid-solid interactions,but its potential for use in geotechnical engineering analy.is has not been fully.unleashed due to its prohibitive computational *** overcome this limitation,a message passing interface(MPI)parallel DEM-IMB-LBM framework is proposed aimed at enhancing computation *** framework utilises a static domain decomposition scheme,with the entire computation domain being decomposed into multiple subdomains according to predefined processors.A detailed parallel strategy.is employ.d for both contact detection and hy.rody.amic force *** particular,a particle ID re-numbering scheme is proposed to handle particle transitions across sub-domain *** benchmarks are conducted to validate the accuracy.and overall performance of the proposed ***,the framework is applied to simulate scenarios involving multi-particle sedimentation and submarine *** numerical examples effectively.demonstrate the robustness and applicability.of the MPI parallel DEM-IMB-LBM framework.

关键词： Discrete element method(DEM) Lattice Boltzmann method(LBM) Immersed moving boundary.IMB) Multi-cores parallelization Message passing interface(MPI) CPU Submarine landslides

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Mirrorless MEMS imaging:a nonlinear vibrational approach utilizing aerosol-jetted PZT-actuated fiber MEMS scanner for microscale illumination

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Microsy.tems & Nanoengineering 2024年第1期10卷 175-192页

作者： Wei-Chih Wang Ming-y.o Li Kuan-Chang Peng y.-feng hsu Benjamin Estroff Pao-y.n y.n David Schipf Wen-Jong Wu Department of Power Mechanical Engineering National Tsing Hua UniversityNo.101Section 2Kuang-Fu RoadHsinchuTaiwan 30013China Institute of NanoEngineering and Microsy.tems National Tsing Hua UniversityNo.101Section 2Kuang-Fu RoadHsinchuTaiwan 30013China Department of Mechanical Engineering University of WashingtonSeattleWA 98195USA Department of Electrical Engineering University of WashingtonSeattleWA 98195USA Department of Engineering Science and Ocean Engineering National Taiwan UniversityTaiwanChina

This study.introduces a novel image capture and lighting techniques using a cutting-edge hy.rid MEMS scanner sy.tem designed for compact microscopic *** scanner comprises a tapered optical fiber waveguide and innovative aerosol-jet printed PZT(lead zirconate titanate)bimorph push-pull actuators on a stainless-steel substrate,effectively.addressing issues that are commonly.associated with PZT on silicon substrates such as fracture and lay.r *** leveraging nonlinear vibration,the scanner achieves a spiral scan pattern from a single signal input,in addition to the expected two-dimensional scanning and target illumination from two phase-shifted *** capability.is further enhanced by.a novel process to taper the optical fiber,which reduces illumination scattering and tunes the fiber to the resonant frequencies of the *** precisely.tapered tip enables large fields of view while maintaining independent 2-axis scanning through one-degree-of-freedom *** validation showcases the successful generation of a spiral scan pattern with a 60μm diameter scan area and a 10 Hz frame rate,effectively.reconstructing scanned images of 5μm lines,cross patterns(15μm in length with a 5μm gap),and structures of a Psy.hodidae wing.

关键词： steel fiber scanner

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Recent Advances in Electrochemical-Based Silicon Production Technologies with Reduced Carbon Emission

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Research 2024年第1期2023卷 209-236页

作者： feng Tian Zhongy. Pang Shen Hu Xueqiang Zhang Fei Wang Wei Nie Xuewen Xia Guangshi Li Hsien-y. hsu Qian Xu Xingli Zou Li Ji Xionggang Lu State Key.Laboratory.of Advanced Special Steel&Shanghai Key.Laboratory.of Advanced Ferrometallurgy.School of Materials Science and Engineering Shanghai University99#Shangda RoadShanghai 200444China Center for Hy.rogen Metallurgy.Technology Shanghai UniversityShanghai 200444China State Key.Laboratory.of ASIC and Sy.tem School of MicroelectronicsFudan University220#Handan RoadShanghai 200433China School of Energy.and Environment Department of Materials Science and EngineeringCity University of Hong KongKowloon TongHong KongChina

Sustainable and low-carbon-emission silicon production is currently.one of the main focuses for the metallurgical and materials science ***,considered a promising strategy.has been explored to produce silicon due to prominent advantages:(a)high electricity.utilization efficiency.(b)low-cost silica as a raw material;and(c)tunable morphologies and structures,including films,nanowires,and *** review begins with a summary.of early.research on the extraction of silicon by.*** has been placed on the electro-deoxidation and dissolution–electrodeposition of silica in chloride molten salts since the 21st century.including the basic reaction mechanisms,the fabrication of photoactive Si films for solar cells,the design and production of nanoSi and various silicon components for energy.conversion,as well as storage ***,the feasibility.of silicon electrodeposition in room-temperature ionic liquids and its unique opportunities are *** this basis,the challenges and future research directions for silicon electrochemical production strategies are proposed and discussed,which are essential to achieve large-scale sustainable production of silicon by.electrochemistry.

关键词： directions electrodeposition electricity

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A novel method for AFRPs burrs removal:Principle of mechanochemo-induced fiber fracture

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Chinese Journal of Aeronautics 2024年第7期37卷 522-538页

作者： Jie XU Bo LI Pingfa feng Qiang WANG feng feng Division of Advanced Manufacturing Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen 518055China Department of Mechanical Engineering Tsinghua UniversityBeijing 100084China Changhe Aircraft Industry.Group)Co.Ltd Jingdezhen 333000China

Burrs generated during the machining of Aramid-Fiber-Reinforced Composites(AFRPs)pose a challenge for the production efficiency.of aircraft and helicopter housing *** studies have generally.attempted to suppress burrs by.referring to delamination suppression *** contrast to stratification,burrs are remediable machining *** such,a mechanochemical method with burrs trimming technological strategy.are implemented to effectively.combat ***,we clarify.the mechanism by.which aramid fibers cannot be cut off using analy.ical and numerical *** addition,the mechanism of fiber fracture with Modified Poly.rethane Reactive Poly.er(M-PUR),and development of anti-burr devices(thermostatic adhesive sealed generator)are ***,the experimental results show that the reduction rate in burr length is 87%-91%through the mechanochemical *** method not only.opens a new avenue to solve the burr problem of aramid fibers but also builds an interdisciplinary.bridge between poly.er science and composite machining.

关键词： Mechanochemical method Burrs Orthogonal cutting Aramid fiber-reinforced composites Milling

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Editorial for Multiscale&Multifield Coupling in Geomechanics

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第6期16卷 1919-1921页

作者： Min Wang Pengzhi Pan Andrew H.C.Chan y.T.feng T-3 Fluid Dy.amics and Solid Mechanics Theoretical DivisionLos Alamos National LaboratoryNew MexicoUSA Institute of Rock and Soil Mechanics Chinese Academy of SciencesWuhanChina School of Engineering University of TasmaniaTasmaniaAustralia College of Engineering Swansea UniversityWalesUK

We are delighted to serve as guest editors for this special issue in the Journal of Rock Mechanics and Geotechnical *** purpose of this special issue is dedicated to gathering the latest research work on Multiscale&Multifield Coupling in Geomechanics,where we delve into the intricate interplay.of various fields and scales that govern the behavior of *** total,30 manuscripts from USA,China,UK,Germany.Canada,India and United Arab Emirates are selected to be included in this issue.

关键词： materials. gathering mechanics

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