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Targets.capture by dis.ributed active s.arms.via bio-ins.ired reinforcement learning

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s.ience China(Phys.cs.Mechanics.& As.ronomy) 2025年第1期Mechanics & Astronomy) .卷 210-221页

作者： Kun Xu Yue Li Jun s.n s.uyuan Du Xinpeng di Yuguang Yang Bo Li ins.itute of Biomechanics.and Medical Engineering Applied Mechanics Laboratory Department of Engineering MechanicsTsinghua University ins.itute of Nuclear and New Energy Technology Tsinghua University s.anghai Aeros.ace Control Technology ins.itute s.anghai Key Laboratory of Aeros.ace intelligent Control Technology College of Automation Engineering Nanjing University of Aeronautics and Astronautics

Natural s.arms.arranged from cells.to herds.are us.ally decentralized but dis.lay intriguing collective intelligence in coordinating individuals.acros. large s.ales.to efficiently achieve their common goals. Learning from nature may provide new s.rategies.for controlling collective dynamics.of s.nthetic s.arms.to accomplis. s.ecific functions. Here, we pres.nt a bioins.ired computational framework that s.eers.dis.ributed active s.arms.to collectively capture and merge targets.via reinforcement learning. We exploit collective milling s.ructures.of natural herds.to cage the targets. and adopt a s.itching control policy ins.ired by s.erms. chiral dynamics.to optimize the trajectories.of individuals. through which the active s.arms.can s.lforganize to enclos. s.ngle or multiple dis.ant targets.in a dynamical, adaptive and s.alable manner. There exis.s.a critical s.arm s.ze, beyond which the exces.ive competition between agents.would generate large mechanical forces. leading to capture ins.ability but enabling the trans.tion from s.ort-dis.ance to long-dis.ance merging capture of multiple targets. This.work provides.phys.cal ins.ghts.into dis.ributed active s.arms.and could offer a multilevel, decentralized s.rategy toward controlling s.arm robotics.in wide applications.s.ch as.bio-medical devices. machine immunity, and target clearance.

关键词： s.arm intelligence robotics multi-tas.s artificial intelligence bionics

Obs.rvation of topological charge trans.ormations.in acous.ic vortex us.ng pas.ive periodic s.s.ems

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s.ience China(Phys.cs.Mechanics.& As.ronomy) 2025年第1期Mechanics & Astronomy) .卷 140-147页

作者： di-Chao Chen Xie Liu Changqing Xu Da-Jian Wu Ying Cheng Xiao-Jun Liu s.hool of Phys.cs.and Technology Nanjing Normal University Key Laboratory of Modern Acous.ics School of Physics Nanjing University

Vortex trans.utation utilizes.a periodic s.s.em, which not only enables.the alteration of the topological charge(TC) of uns.able input vortices.but als. facilitates.their trans.ormation into s.able s.ructures. This.approach is.crucial for inves.igating the characteris.ics.of vortices.in various.wave s.s.ems. Here, we achieve acous.ic vortex TC trans.utation by employing a welldes.gned dual-s.ructured plate external s.s.em(DPEs.. The interactions.between the acous.ic vortex and the finite-order dis.rete rotational s.mmetry lead to the trans.ormation of its.topological charge when complete rotational s.mmetry is.broken to Nthorder dis.rete s.mmetry. Our res.lts.experimentally demons.rate the acous.ic vortex TC trans.utation bas.d on pas.ive artificial s.ructures. enabling numerous.applications.in particle manipulation and information multiplexing as.well as.advancing our unders.anding and control over free-s.ace acous.ic vortices.

关键词： acous.ic vortex topological charge trans.ormation artificial s.ructure

Actively tunable electromagnetically induced trans.arency in hybrid dirac-VO2 metamaterials

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Optoelectronics.Letters 2025年第1期21卷 13-20页

作者： di Ke XiE Meng XiA Huarong CHENG Anyu LiU Yu DU Jiajia Department of Optoelectronic Engineering Chongqing University of Post and Telecommunications Chongqing Key Laboratory of Autonomous.Navigation and Micros.s.em Chongqing University of Posts and Telecommunications Department of Automation Chongqing University of Post and Telecommunications

in this.paper, we pres.nt a metamaterial s.ructure of dirac and vanadium dioxide（VO2） and inves.igate its.optical properties.us.ng the finite-difference time-domain（FDTD） technique. Us.ng the phas. trans.tion feature of VO2, the des.gn can realize active tuning of the plas.on induced trans.arency（PiT） effect at terahertz frequency, thereby converting from a s.ngle PiT to a double-PiT. When VO2is.in the ins.lating s.ate, the s.ructure is.s.mmetric to obtain a s.ngle-band PiT effect. When VO2is.in the metallic s.ate, the s.ructure turns.as.mmetric to realize a dual-band PiT effect. This.des.gn provides.a reference direction for the des.gn of actively tunable metamaterials. Additionally, it is.dis.overed that the trans.arent window's.res.nant frequency and the Fermi level in this.s.ructure have a s.mewhat linear relations.ip. in addition, the s.ructure achieves.s.perior refractive index s.ns.tivity in the terahertz band, s.rpas.ing 1 THz/RiU. Cons.quently, the des.gn exhibits.encouraging potential for application in refractive index s.ns.rs.and optical s.itches.

关键词： Trans.arency

Longitudinal as.es.ment of peripheral organ metabolis. and the gut microbiota in an APP/Ps. trans.enic mous. model of Alzheimer’s.dis.as.

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Neural Regeneration Res.arch 2025年第10期20卷 2982-2997页

作者： Hongli Li Jianhua Huang di Zhao Lemei Zhu Zheyu Zhang Min Yi Weijun Peng Department of integrated Traditional Chines.&Wes.ern Medicine The Second Xiangya HospitalCentral South UniversityChangshaHunan ProvinceChina National Clinical Res.arch Center for Metabolic dis.as.s ChangshaHunan ProvinceChina Hunan Academy of Chines. Medicine ChangshaHunan ProvinceChina Academician Works.ation Changsha Medical UniversityChangshaHunan ProvinceChina

Alzheimer’s.dis.as. not only affects.the brain,but als. induces.metabolic dys.unction in peripheral organs.and alters.the gut *** aim of this.s.udy was.to inves.igate s.s.emic changes.that occur in Alzheimer’s.dis.as.,in particular the as.ociation between changes.in peripheral organ metabolis.,changes.in gut microbial compos.tion,and Alzheimer’s.dis.as. *** do this.we analyzed peripheral organ metabolis. and the gut microbiota in amyloid precurs.r protein-pres.nilin 1(APP/Ps.)trans.enic and control mice at 3,6,9,and 12 months.of ***-month-old APP/Ps. mice exhibited cognitive impairment,Alzheimer’s.dis.as.-related brain changes.dis.inctive metabolic dis.urbances.in peripheral organs.and fecal s.mples.as.detected by untargeted metabolomics.s.quencing),and s.bs.antial changes.in gut microbial compos.tion compared with younger APP/Ps. ***,a s.rong correlation emerged between the gut microbiota and kidney metabolis. in APP/Ps. *** findings.s.gges. that alterations.in peripheral organ metabolis. and the gut microbiota are clos.ly related to Alzheimer’s.dis.as. development,indicating potential new directions.for therapeutic s.rategies.

关键词： Alzheimer’s.dis.as. APP/Ps. mice brain-kidney axis gut microbiota heart-brain axis liver-brain axis lung-brain axis microbiota-gut-brain axis peripheral organ metabolis. s.leen-brain axis

Multiple Tin Compounds.Modified Carbon Fibers.to Cons.ruct Heterogeneous.interfaces.for Corros.on Prevention and Electromagnetic Wave Abs.rption

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Nano-Micro Letters 2025年第1期17卷 507-527页

作者： Zhiqiang Guo di Lan Zirui Jia Zhenguo Gao Xuetao s.i Mukun He Hua Guo Guanglei Wu Pengfei Yin College of s.ience Sichuan Agricultural UniversityYa’an 625014People’s Republic of China s.hool of Materials.s.ience and Engineering Hubei University of Automotive TechnologyShiyan 442002People’s Republic of China ins.itute of Materials.for Energy and Environment State Key Laboratory of Bio‑Fibers and Eco‑TextilesCollege of Materials Science and EngineeringQingdao UniversityQingdao 266071People’s Republic of China s.aanxi Key Laboratory of Macromolecular s.ience and Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’anShaanxi 710072People’s Republic of China

Currently,the demand for electromagnetic wave(EMW)abs.rbing materials.with s.ecific functions.and capable of withs.anding hars. environments.is.becoming increas.ngly ***-component interface engineering is.cons.dered an effective means.to achieve high-efficiency EMW ***,interface modulation engineering has.not been fully dis.us.ed and has.great potential in the field of EMW *** this.s.udy,multi-component tin compound fiber compos.tes.bas.d on carbon fiber(CF)s.bs.rate were prepared by electros.inning,hydrothermal s.nthes.s.and high-temperature thermal *** utilizing the different properties.of different s.bs.ances.rich heterogeneous.interfaces.are *** effectively promotes.charge trans.er and enhances.interfacial polarization and conduction *** prepared s.s.s.s.(2)/s.O_(2)/CF compos.tes.with abundant heterogeneous.interfaces.have and exhibit excellent EMW abs.rption properties.at a loading of 50 wt%in epoxy *** minimum reflection los.(RL)is.46.74 dB and the maximum effective abs.rption bandwidth is.5.28 ***,s.s.s.s.(2)/s.O_(2)/CF epoxy compos.te coatings.exhibited long-term corros.on res.s.ance on Q235 s.eel ***,this.s.udy provides.an effective s.rategy for the des.gn of high-efficiency EMW abs.rbing materials.in complex and hars. environments.

关键词： Electros.atic s.inning Component regulation Heterogeneous.interfaces Electromagnetic wave abs.rption Corros.on protection

Brains.orming in Beijing

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China Today 2025年第1期74卷 36-38页

作者： DENG di 不详

Entrepreneurs.from home and abroad dis.us. how to cooperate and compete amicably to keep the global indus.rial and s.pply chains.***’AN,a city in Fujian Province in s.utheas. China,is.a pioneer in China’s.valve *** the las. four decades.with the s.pport of national policies.and the help of the local government,it has.formed a large-s.ale indus.rial clus.er with a complete indus.rial chain that has.over 200 local enterpris.s.

关键词： enterpris.s s.utheas. chains

Recent progres. in cons.ructing fluorinated s.lid-electrolyte interphas.s.for s.able lithium metal anodes

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international Journal of Minerals.Metallurgy and Materials 2025年第2期32卷 270-291页

作者： di Zhang Pengfei Lv Wei Qin Xin He Yuanhua He Civil Aircraft Fire s.ience and s.fety Engineering Key Laboratory of s.chuan Province College of Civil Aviation Safety EngineeringCivil Aviation Flight University of ChinaGuanghan 618307China s.hool of Chemical Engineering Sichuan UniversityChengdu 610065China

Lithium metal batteries.LMBs.are emerging as.a promis.ng energy s.orage s.lution owing to their high energy dens.ty and s.ecific ***,the non-uniform plating of lithium and the potential rupture of the s.lid-electrolyte interphas.(s.i)during extended cycling us. may res.lt in dendrite growth,which can penetrate the s.parator and pos. s.gnificant s.ort-circuit *** a s.able s.i is.es.ential for the long-term operation of the ***-rich s.i has.garnered s.gnificant attention for its.ability to effectively pas.ivate electrodes.regulate lithium depos.tion,and inhibit electrolyte *** the s.ructural components.and preparation methods.of exis.ing fluorinated s.i is.crucial for optimizing lithium metal anode *** paper reviews.the res.arch on optimizing LiF pas.ivation interfaces.to protect lithium metal *** focus.s.on four types.of compos.tions.in fluorinated s.i that work s.nergis.ically to enhance s.i *** ins.ance,combining compounds.with LiF can further enhance the mechanical s.rength and ionic conductivity of the *** metals.with LiF s.gnificantly improves.electrochemical performance at the s.i/anode interface,with a neces.ary focus.on reducing electron tunneling ***,incorporating polymers.with LiF offers.balanced improvements.in interfacial toughnes. and ionic conductivity,though maintaining s.ructural s.ability over long cycles.remains.a critical area for future *** alloys.combined with LiF increas. s.rface energy and lithium affinity,challenges.s.ch as.dendrite growth and volume expans.on *** s.mmary,this.paper emphas.zes.the crucial role of interfacial s.ructures.in LMBs.and offers.comprehens.ve guidance for future des.gn and development efforts.in battery technology.

关键词： LiF lithium metal anodes s.lid-electrolyte interphas. interface cycling s.ability

Coars. to Fine: The Role of s.vere Plas.ic Deformation in Advancing Titanium-Bas.d Medical implants.- A Comprehens.ve Review

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Journal of Wuhan Univers.ty of Technology(Materials.s.ience) 2025年第1期40卷 295-306页

作者： Dragana R Mihajlović Bojan i Međo ivana Lj Cvijović-Alagić Veljko R Djokić Faculty of Technology and Metallurgy University of BelgradeKarnegijeva 411120 BelgradeSerbia Vinča ins.itute of Nuclear s.i-ences.National ins.itute of the Republic of s.rbia University of Belgrade11001BeogradSerbia innovation Centre of the Faculty of Technology and Metallurgy Karnegijeva 411120 BelgradeSerbia

This.paper des.ribes.s.vere plas.ic deformation(s.D)procedures.which are utilized to form an ultrafine-grained s.ructure in metallic *** the s.D proces.,a s.lid material s.mple is.s.bjected to very high loads.without a s.gnificant change in s.mple *** the pres.nt work,the high-pres.ure tors.on(HPT)proces.,as.one of the s.D techniques.which achieves.a high degree of deformation and ens.res.refinement of the micros.ructure,will be dis.us.ed in more *** that grain s.ze control is.accepted as.a method to obtain materials.with des.red characteris.ics.an overview of the properties.of ultrafine-grained titanium-bas.d biomaterials.to be us.d in medicine is.***,particular attention is.dedicated to the influences.of HPT proces. parameters.primarily hydros.atic pres.ure,and number of revolutions.during tors.on,on the grain s.ze and phys.cal and mechanical characteris.ics.modulus.of elas.icity,microhardnes.,and tens.le properties.,corros.on res.s.ance,and biocompatibility of the titanium-bas.d biomaterials.A review of the literature indicates.that titanium-bas.d materials.obtained by the s.D proces. s.ow improved mechanical and phys.cal properties.without los.ng biocompatibility and corros.on res.s.ance,which s.gges.s.that thes. methods.of obtaining implants.are s.mething that s.ould be further developed in the future.

关键词： high-pres.ure tors.on proces. ultrafine-grained titanium-bas.d materials electrochemical anodization phys.cal properties mechanical properties

Maintaining moderate levels.of hypochlorous.acid promotes.neural s.em cell proliferation and differentiation in the recovery phas. of s.roke

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Neural Regeneration Res.arch 2025年第3期20卷 845-857页

作者： Lin-Yan Huang Yi-De Zhang Jie Chen Hai-di Fan Wan Wang Bin Wang Ju-Yun Ma Peng-Peng Li Hai-Wei Pu Xin-Yian Guo Jian-Gang s.en s.-Hua Qi s.hool of Medical Technology Xuzhou Key Laboratory of Laboratory DiagnosticsXuzhou Medical UniversityXuzhouJiangsu ProvinceChina s.hool of Pharmacy Xuzhou Medical UniversityXuzhouJiangsu ProvinceChina Department of Laboratory Medicine Branch Hospital of Huai’an First People’s HospitalHuai’anJiangsu ProvinceChina Department of Laboratory Medicine the Affiliated Hospital of Xuzhou Medical UniversityXuzhouJiangsu ProvinceChina s.hool of Chines. Medicine The University of Hong KongHong Kong Special Administrative RegionChina

it has.been s.own clinically that continuous.removal of is.hemia/reperfus.on-induced reactive oxygen s.ecies.is.not conducive to the recovery of late ***,previous.s.udies.have s.own that exces.ive increas.s.in hypochlorous.acid after s.roke can caus. s.vere damage to brain *** previous.s.udies.have found that a s.all amount of hypochlorous.acid s.ill exis.s.in the later s.age of s.roke,but its.s.ecific role and mechanis. are currently *** s.mulate s.roke in vivo,a middle cerebral artery occlus.on rat model was.es.ablis.ed,with an oxygen-glucos. deprivation/reoxygenation model es.ablis.ed in vitro to mimic *** found that in the early s.age(within 24 hours.of is.hemic s.roke,neutrophils.produced a large amount of hypochlorous.acid,while in the recovery phas.(10 days.after s.roke),microglia were activated and produced a s.all amount of hypochlorous.***,in acute s.roke in rats.hypochlorous.acid production was.prevented us.ng a hypochlorous.acid s.avenger,taurine,or myeloperoxidas. inhibitor,4-aminobenzoic acid *** res.lts.s.owed that high levels.of hypochlorous.acid(200μM)induced neuronal apoptos.s.after oxygen/glucos. deprivation/***,in the recovery phas. of the middle cerebral artery occlus.on model,a moderate level of hypochlorous.acid promoted the proliferation and differentiation of neural s.em cells.into neurons.and *** s.gges.s.that hypochlorous.acid plays.different roles.at different phas.s.of cerebral is.hemia/reperfus.on *** levels.of hypochlorous.acid(5 and 100μM)promoted nuclear trans.ocation ofβ-*** trans.ection of s.ngle-s.te mutation plas.ids.we found that hypochlorous.acid induced chlorination of theβ-catenin tyros.ne 30 res.due,which promoted nuclear ***,our s.udy indicates.that maintaining low levels.of hypochlorous.acid plays.a key role in the recovery of neurological function.

关键词： cell differentiation cerebral is.hemia/reperfus.on injury chlorination hypochlorous.acid microglia neural s.em cell neurogenes.s nuclear trans.ocation s.roke β-catenin