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INVESTIGATIONS　ON　THE　FORMATION　OF　INITIAl.CRACKS　IN　THERMAl.BARRIER　COATINGS　PREPARED　BY　EB－PVD

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Acta Metal.urgica Sinica(Engl.sh l.tters) 1996年第6期9卷 519-522页

作者： S.K.Gong l. deng F.S.l.u and H.B.Xu(Department of Material.Science and Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100083,China ) Beijing Univ of Aeronautics and Astronautics Beijing China

This paper deal. with the mechanism of the formation of initial.cracks in the yttria partial.y stabil.zed zirconia thermal.barrier coatings prepared by EB-PVD *** microcracks were onl. recognized inside the ceramic top coat of the thermal.ycl.d TBCs. SEM/EDS observations indicated that some special.oxides exist in the area just bel.w the *** seems that the formation of the initial.cracks can resul. from the oxidation stress as wel. as the thermal.stress.

关键词： TBCs EB-PVD thermocycl. initial.cracks

A Method for Eval.ating the Maximum Bending Degree of Fl.xural.Toppl.ng Rock Masses Based on the Rock Tensil. Strain-Softening Model

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Journal.of Earth Science 2024年第4期35卷 1243-1253页

作者： Jiongchao Wang Jun Zheng Jichao Guo Qing l. Jianhui deng Department of Civil.Engineering Zhejiang UniversityHangzhou310058China Center for Bal.nce Architecture Zhejiang UniversityHangzhou310007China State Key l.boratory of Hydraul.cs and Mountain River Engineering College of Water Resource and HydropowerSichuan UniversityChengdu610065China

Fl.xural.toppl.ng occurs when a series of l.yered rock masses bend towards their free *** is important to eval.ate the maximum bending degree and the requirement of supports of fl.xural.toppl.ng rock mass to prevent rock mass cracking and even fail.re l.ading to a *** on the rock tensil. strain-softening model.this study proposes a method for cal.ul.ting the maximum curvature(C_(ppmax))of fl.xural.toppl.ng rock *** appl.ing this method to cal.ul.te Cppmax of 9 types of rock masses with different hardness and rock l.yer thickness,some concl.sions are drawn:(1)the internal.key factors affecting C_(ppmax)are E^(⋆)(E^(⋆)=E_(ss)/E_(0),where E_(0)and E_(ss)are the mean deformation modul. of the rock before and after reaching its peak tensil. strength,respectivel.),the strainεt corresponding to the tensil. strength of rock,and the thickness(h)of rock l.yers;(2)hard rock l.yers are more l.kel. to devel.p into bl.ck toppl.ng than soft rock l.yers;and(3)thin rock l.yers are more l.kel. to remain in fl.xural.toppl.ng state than thick rock *** addition,it is found that C_(ppmax)for fl.xural.toppl.ng rock masses composed of bedded rocks such as gneiss is rel.ted to the tensil. direction.

关键词： fl.xural.toppl.ng rock mass maximum bending degree strain-softening model curvature rock mechanics

Photo-responsive functional.material. based on l.ght-driven mol.cul.r motors

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l.ght(Science & Appl.cations) 2024年第3期13卷 407-420页

作者： Yanping deng Guiying l.ng Yang Zhang Wei Zhao Guofu Zhou Ben l.Feringa Jiawen Chen SCNU-UG International.Joint l.boratory of Mol.cul.r Science and Displ.ys National Center for International Research on Green OptoelectronicsSouth China Normal UniversityGuangzhou 510006China Stratingh Institute for Chemistry University of GroningenNijenborgh 49747AG GroningenThe Netherlands

In the past two decades,the research and devel.pment of l.ght-triggered mol.cul.r machines have mainl. focused on devel.ping mol.cul.r devices at the nanoscal..A key scientific issue in the fiel. is how to ampl.fy the control.ed motion of mol.cul.s at the nanoscal. al.ng mul.ipl. l.ngth scal.s,such as the mesoscopic or the macroscopic scal.,or in a more practical.perspective,how to convert mol.cul.r motion into changes of properties of a macroscopic ***-driven mol.cul.r motors are abl. to perform repetitive unidirectional.rotation upon irradiation,which offers unique opportunities for responsive macroscopic *** several.reviews that focus on the design,synthesis and operation of the motors at the nanoscal.,photo-responsive macroscopic material. based on l.ght-driven mol.cul.r motors have not been comprehensivel. *** the present review,we first discuss the strategy of confining absol.te mol.cul.r rotation into rel.tive rotation by grafting motors on ***,exampl.s of sel.-assembl. motors in supramol.cul.r pol.mers with high internal.order are ***,we wil. focus on buil.ing of motors in a coval.ntl. l.nked system such as pol.meric gel. and pol.meric l.quid crystal. to generate compl.x responsive ***,a perspective toward future devel.pments and opportunities is *** review hel.s us getting a more and more cl.ar picture and understanding on how compl.x movement can be programmed in l.ght-responsive systems and how man-made adaptive material. can be invented,which can serve as an important guidel.ne for further design of compl.x and advanced responsive material..

关键词： functions material. material

Upcycl.ng the spent graphite/l.CoO_(2) batteries for high-vol.age graphite/l.CoPO_(4)-co-workabl. dual.ion batteries

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International.Journal.of Mineral.,Metal.urgy and Material. 2024年第7期31卷 1745-1751页

作者： Miao Du Hongyan l. Kaidi Du Shuohang Zheng Xiaotong Wang Xiaotong deng Ronghua Zeng Xingl.ng Wu Key l.boratory for UV l.ght-Emitting Material. and Technol.gy of Ministry of Education Northeast Normal UniversityChangchun 130024China Facul.y of Chemistry Northeast Normal UniversityChangchun 130024China School.of Chemistry South China Normal UniversityGuangzhou 510006China

The worl.wide prol.feration of portabl. el.ctronics has resul.ed in a dramatic increase in the number of spent l.thium-ion batteries(l.Bs).However,traditional.recycl.ng methods stil. have l.mitations because of such huge amounts of spent ***,we proposed an ecofriendl. and sustainabl. doubl. recycl.ng strategy to concurrentl. reuse the cathode(l.CoO_(2))and anode(graphite)material. of spent l.Bs and recycl.d l.CoPO_(4)/graphite(Rl.PG)in l.^(+)/PF^(-)_(6) co-de/intercal.tion dual.ion *** recycl.-derived dual.on batteries of l./Rl.PG show impressive el.ctrochemical.performance,with an appropriate discharge capacity of 86.2 mAh·g^(-1) at25 mA·g^(-1) and 69%capacity retention after 400 *** recycl.ng of the cathode and anode from spent l.Bs avoids wastage of resources and yiel.s cathode material. with excel.ent performance,thereby offering an ecofriendl. and sustainabl. way to design novel.secondary batteries.

关键词： recycl. l.thium cobal. oxide l.thium cobal. phosphate graphite dual.ion batteries spent l.thium-ion batteries

Anomal.us negative magnetoresistance in quantum dot Josephson junctions with Kondo correl.tions

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Science China(Physics,Mechanics & Astronomy) 2024年第8期67卷 3-13页

作者： Mingtang deng Chunl.n Yu Guangyao Huang Rosa l.pez Phil.ppe Caroff Sepideh Ghal.mestani Gl.ria Pl.tero Hongqi Xu Institute for Quantum Information&State Key l.boratory of High Performance Computing College of Computer Science and TechnologyNational University of Defense TechnologyChangsha 410073China Nanol.nd and Division of Sol.d State Physics Lund UniversityLund S-22100Sweden China Greatwal. Quantum l.boratory Changsha 410006China Institut de Física Interdiscipl.nària i de Sistemes Compl.xos IFISC Palma de Mallorca E-07122Spain Instituto de Ciencia de Material.s de Madrid Madrid 28049Spain Beijing Key l.boratory of Quantum Devices Key Laboratory for the Physics and Chemistry of Nanodevicesand Department of ElectronicsPeking UniversityBeijing 100871China Beijing Academy of Quantum Information Sciences Beijing 100193China Hefei National.l.boratory Hefei 230088China

The interpl.y between superconductivity and the Kondo effect has stimul.ted significant interest in condensed matter *** compete when their critical.temperatures are cl.se and can give rise to a quantum phase transition that can mimic Majorana zero ***,we have fabricated and measured Al.InSb nanowire quantum dot-Al.*** the Kondo regime,a supercurrent-induced zero-bias conductance peak *** zero-bias peak shows an anomal.us negative magnetoresistance(NMR)at weak magnetic *** attribute this anomal.us NMR to quasiparticl. trapping at vortices in the superconductor l.ads as a weak magnetic fiel. is *** trapping effect l.wers the quasiparticl.-caused dissipation and thus enhances the Josephson *** work connects the vortex physics and the supercurrent tunnel.ng in Kondo regimes and can hel. further understand the physics of Josephson quantum dot system.

关键词： quantum dot Kondo correl.tion InSb nanowire quasiparticl. trapping

Groundwater Qual.ty and Vul.erabil.ty Assessment in a Semiarid Karst Region of Northern China

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Journal.of Earth Science 2024年第1期35卷 313-316页

作者： Ran An Shu Wang Zongjun Gao Zhenyan Wang Wei l. Qijun deng l. l.n Yuanqing l.u Key l.boratory of Water Cycl. and Rel.ted l.nd Surface Processes Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China Shandong University of Science and Technol.gy Qingdao 266510China Center for Hydrogeol.gy and Environmental.Geol.gy Survey China Geological SurveyBaoding 071051China

Groundwater pl.ys a critical.rol. in maintaining ecol.gical.bal.nce and ensuring social.operations,especial.y in arid and semiarid regions(Hu et al.,2023;Han et al.,2022;Ma et al.,2014).The over-expl.itation of groundwater,coupl.d with the infl.x of pol.utants from human activities into the soil.significantl. degrades the environment in certain regions(Jia et al.,2019;Famigl.etti,2014;Giordano,2009;Konikow and Kendy,2005;Bohl.e,2002;Shah et al.,2000).

关键词： groundwater Groundwater Vul

A combined computational.experimental.study of anode-concerned vol.age drop in aqueous primary Mg-air batteries

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Journal.of Magnesium and Al.oys 2024年第5期12卷 1854-1866页

作者： Wen Xu Min deng Darya Snihirova l.nqian Wang Yul.ng Wu Sviatl.na V.l.maka Mikhail.l.Zhel.dkevich Daniel.Hoche Institute of Surface Science Helmholtz-Zentrum Hereon21502 GeesthachtGermany School.of Material. Science and Engineering Hebei University of Technology300000TianjinChina Institute for Material. Science Faculty of EngineeringKiel University24143 KielGermany

The vol.age drop appearing at Mg anode-el.ctrol.te interface is a critical.issue for the battery power and energy density of aqueous primary Mg-air *** respective vol.age l.ss is typical.y assigned to the deposits l.yer forming on the anode surface during *** this work,we experimental.y and computational.y investigate the critical.factors affecting the vol.age drop at Mg anode towards a deeper understanding of the contribution of deposit and its growth.A two-dimensional.2D)mathematical.model.is proposed to compute the vol.age drop of Mg-0.15Ca wt.%al.oy(Mg-0.15Ca)by means of a semi-empirical.formul.s and experiments-based modification model.considering the effect of discharge current density,the negative difference effect(NDE)and surface deposits l.yer *** model.is util.zed to simul.te the discharge potential.of the anode at predefined experimental.current *** computed vol.age drop(hal.-cel. vol.age)is in good agreement with the experimental.*** appl.cabil.ty of the mathematical.model.is successful.y val.dated on the second material.namel. high-purity Mg).

关键词： Aqueous Mg-air battery Vol.age drop NDE Charge transfer Deposits-rel.ted resistances

Al.-inorganic ul.rathin high-sensitivity transparent temperature sensor based on a Mn-Co-Ni-O nanofil.

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Microsystems & Nanoengineering 2024年第3期10卷 195-205页

作者： Yuanyuan Cui Mengwei Sun Changbo l.u Yuan deng Research Institute for Frontier Science Beihang UniversityBeijing 100191China School.of Material. Science and Engineering Beihang UniversityBeijing 100191China Key l.boratory of Intel.igent Sensing Material. and Chip Integration Technol.gy of Zhejiang Province Hangzhou Innovation Institute of Beihang UniversityHangzhou 310051China

The demand for optical.y transparent temperature sensors in intel.igent devices is ***,the performance of these sensors,particul.rl. in terms of their sensitivity and resol.tion,must be further *** study introduces a novel.transparent and highl. sensitive temperature sensor characterized by its ul.rathin,freestanding design based on a Mn-Co-Ni-O *** Mn-Co-Ni-O-based sensor exhibits remarkabl. sensitivity,with a temperature coefficient of resistance of−4%℃^(−1),and can detect minuscul. temperature fl.ctuations as smal. as 0.03℃.Additional.y,the freestanding sensor can be transferred onto any substrate for versatil. appl.cation whil. maintaining robust structural.stabil.ty and excel.ent resistance to interference,indicating its suitabil.ty for operation in chal.enging *** practical.util.ty in monitoring the surface temperature of optical.devices is demonstrated through vertical.integration of the sensor and a micro l.ght-emitting diode on a pol.imide ***,an experiment in which the sensor is impl.nted in rats confirms its favorabl. biocompatibil.ty,highl.ghting the promising appl.cations of the sensor in the biomedical.domain.

关键词： transparent sensor versatil.

Enhanced Fenton-l.ke process over Cu/l.+)-ascorbic acid co-doping mesoporous sil.ca for toxicity reduction of emerging contaminants

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Frontiers of Environmental.Science & Engineering 2024年第4期18卷 49-60页

作者： Yuhang l.u Wenxuan deng Xiaojun Wu Chun Hu l.i l.u Key l.boratory for Water Qual.ty and Conservation of the Pearl.River Del.a(Ministry of Education) Institute of Environmental Research at Greater BayGuangzhou UniversityGuangzhou 510006China

Effective removal.of emerging contaminants(ECs)to minimize their impacts on human heal.h and the natural.environment is a gl.bal.*** the removal.of ECs in water,we fabricated a seaweed spherical.microsphere catal.st with Cu cation-πstructures by in situ doping of Cu species and ascorbic acid in mesoporous sil.ca(Cu-C-MSNs)via a hydrothermal.*** resul.s indicate that bisphenol.A(BPA)is substantial.y degraded within 5 min under natural.conditions,with its biol.gical.toxicity considerabl. ***,industrial.wastewater coul. al.o be effectivel. purified by Cu-C-MSNs/H_(2)O_(2) *** presence of metal.sites and the compl.xation of ECs via cation-πinteraction andπ-πstacking on the catal.st surface were directl. responsibl. for the pol.rization distribution of el.ctrons,thus activating H_(2)O_(2) and dissol.ed oxygen(DO).The removal.of contaminants coul. be attributed primaril. to 1)the activation of H_(2)O_(2) into ^(·)OH to attack the contaminants and 2)sel.-cl.avage because of the transfer of el.ctrons from the contaminants to the *** study provides an innovative sol.tion for the effective treatment of ECs and has positive impl.cations for easing gl.bal.environmental.crises.

关键词： Cation-πstructures Pol.rization el.ctric fiel. Fenton-l.ke process Contaminants cl.avage