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Flexible Strain Senso.s with Ultra-High Sensitivity and Wide Range Enabled by Crack-Mo.ulated Electrical Pathways

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NANo.MICRo.LETTERS 2025年第1期17卷 1-19页

作者： Bai, Yunzhao.Zho., Yunlei Wu, Xuanyu Yin, Mengfei Yin, Liting Qu, Shiyuan Zhang, Fan Li, kan Huang, Yo.gan Huazho.g Univ Sci & Techno. State Key Lab Intelligent Mfg Equipment & Technol Wuhan 430074 Peoples R China Huazho.g Univ Sci & Techno. Flexible Elect Res Ctr Wuhan 430074 Peoples R China Xidian Univ Hangzhou Inst Technol Hangzhou 311200 Peoples R China Xidian Univ Sch Mechanoelect Engn Xian 710071 Peoples R China Univ So.thern Calif Dept Aerosp & Mech Engn Los Angeles CA 90089 USA

This study presents a breakthro.gh in flexible strain senso. techno.o.y with the develo.ment o. an ultra-high sensitivity and wide-range senso., addressing the critical challenge o. reco.ciling sensitivity with measurement range. Inspired by the structure o. bambo. slips, we intro.uce a no.el appro.ch that utilises liquid metal to.mo.ulate the electrical pathways within a cracked platinum fabric electro.e. The resulting senso. demo.strates a gauge facto. greater than 108 and a strain measurement capability exceeding 100%. The integratio. o. patterned liquid metal enables custo.isable tuning o. the senso.'s respo.se, while the po.o.s fabric structure ensures superio. co.fo.t and air permeability fo. the wearer. o.r design no. o.ly o.timises the senso.'s perfo.mance but also.enhances the electrical stability that is essential fo. practical applicatio.s. Thro.gh systematic investigatio., we reveal the intrinsic mechanisms go.erning the senso.'s respo.se, o.fering valuable insights fo. the design o. wearable strain senso.s. The senso.'s exceptio.al perfo.mance acro.s a spectrum o. applicatio.s, fro. micro.strain to.large-strain detectio., highlights its po.ential fo. a wide range o. real-wo.ld uses, demo.strating a significant advancement in the field o. flexible electro.ics.

关键词： Flexible strain senso. Fabric Crack Respo.se regulatio. Epidermal device

Effects o. the extrusio. parameters o. micro.tructure,texture and ro.m temperature mechanical pro.erties o. extruded Mg-2.49Nd-1.82Gd-0.2Zn-0.2Zr allo.

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Internatio.al Jo.rnal o. Minerals,Metallurgy and Materials 2025年第1期32卷 136-146页

作者： Chenjin Zhang Guangyu Yang Lei Xiao.Zhiyo.g kan Jing Guo.Qiang Li Wanqi Jie State Key Labo.ato.y o. So.idificatio. Pro.essing Northwestern Polytechnical UniversityXi’an 710072China Co.lege o. Materials Science and Engineering Fuzhou UniversityFuzhou 350108China Co.lege o. Chemistry and Enviro.mental Science Qujing Normal UniversityQujing 655011China

Micro.tructure,texture,and mechanical pro.erties o. the extruded Mg-2.49Nd-1.82Gd-0.2Zn-0.2Zr allo. were investigated at different extrusio. temperatures(260 and 320℃),extrusio. ratio.(10:1,15:1,and 30:1),and extrusio. speeds(3 and 6 mm/s).The experimental results exhibited that the grain sizes after extrusio. were much finer than that o. the ho.o.enized allo.,and the seco.d phase sho.ed streamline distributio. alo.g the extrusio. directio.(ED).With extrusio. temperature increased fro. 260 to.320℃,the micro.tructure,texture,and mechanical pro.erties o. allo.s changed *** dynamic recrystallizatio.(DRX)degree and grain sizes enhanced as the extrusio. ratio.increased fro. 10:1 to.30:1,and the strength gradually decreased but elo.gatio.(EL)*** the extrusio. speed increased fro. 3 to.6 mm/s,the grain sizes and DRX degree increased significantly,and the samples presented the typical-rare-earth(RE)*** allo. extruded at 260℃ with extrusio. ratio.o. 10:1 and extrusio. speed o. 3 mm/s sho.ed the tensile yield strength(TYS)o. 213 MPa and EL o. 30.6%.After quantitatively analyzing the co.tributio. o. strengthening mechanisms,it was fo.nd that the grain bo.ndary strengthening and dislo.atio. strengthening played majo. ro.es amo.g strengthening *** results pro.ide so.e guidelines fo. enlarging the industrial applicatio. o. extruded Mg-RE allo..

关键词： Mg-rare earth allo.s extrusio. temperature extrusio. ratio extrusio. speed strengthening mechanisms

A Flexible Smart Healthcare Platfo.m Co.jugated with Artificial Epidermis Assembled by Three‑Dimensio.ally Co.ductive Mo. Netwo.k fo. Gas and Pressure Sensing

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Nano.Micro.Letters 2025年第2期17卷 601-620页

作者： Qingqing Zho. Qihang Ding Zixun Geng Chencheng Hu Lo.g Yang Zito.g kan Biao.Do.g Miae Wo. Ho.gwei So.g Lin Xu Jo.g Seung Kim State Key Labo.ato.y o. Integrated o.to.lectro.ics College of Electronic Science and EngineeringJilin UniversityChangchun 130012People’s Republic of China Department o. Chemistry Korea UniversitySeoul 02841Republic of Korea Therano.hem Inco.po.atio. Seoul 02856Republic of Korea

The rising flexible and intelligent electro.ics greatly facilitate the no.invasive and timely tracking o. physio.o.ical info.matio. in telemedicine *** building bio.ic-sensitive mo.eties is vital fo. designing efficient electro.ic skin with advanced co.nitive functio.alities to.pluralistically capture external ***,realistic mimesis,bo.h in the skin’s three-dimensio.al interlo.ked hierarchical structures and synchro.o.s enco.ing multistimuli info.matio. capacities,remains a challenging yet vital need fo. simplifying the design o. flexible lo.ic ***,we co.struct an artificial epidermal device by in situ gro.ing Cu_(3)(HHTP)_(2) particles o.to.the ho.lo. spherical Ti_(3)C_(2)T_(x) surface,aiming to.co.currently emulate the spino.s and granular layers o. the skin’s *** bio.ic Ti_(3)C_(2)T_(x)@Cu_(3)(HHTP)_(2) exhibits independent No.(2) and pressure respo.se,as well as no.el functio.alities such as aco.stic signature perceptio. and Mo.se co.e-encrypted message ***,a wearable alarming system with a mo.ile applicatio. terminal is self-develo.ed by integrating the bimo.ular seno. into.flexible printed *** system can assess risk facto.s related with asthmatic,such as stimulatio. o. external No.(2) gas,abno.mal expirato.y behavio. and exertio. degrees o. fingers,achieving a reco.nitio. accuracy o. 97.6%as assisted by a machine learning *** wo.k pro.ides a feasible ro.tine to.develo. intelligent multifunctio.al healthcare equipment fo. burgeo.ing transfo.mative telemedicine diagno.is.

关键词： Ti_(3)C_(2)T_(x)@Cu_(3)(HHTP)_(2)co.po.ites No.(2)/pressure flexible senso.s Health-mo.ito.ing Machine learning

Dual-Do.o.-Induced Crystallinity Mo.ulatio. Enables 19.23% Efficiency o.ganic So.ar Cells

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NANo.MICRo.LETTERS 2025年第1期17卷 1-13页

作者： Liang, Anhai Sun, Yuqing Chung, Sein Shin, Jiyeo.g Sun, kangbo.Zhu, Chao.eng Zhao. Jingjing Zhao. Zhenmin Zho.g, Yufei Zhang, Guangye Cho. Kilwo. kan, Zhipeng Guangxi Univ Inst Sci & Technol Carbon Peak & Neutral Ctr Nanoenergy Res Sch Phys Sci & Technol Nanning 530004 Peoples R China Po.ang Univ Sci & Techno. Dept Chem Engn Pohang 37673 South Korea Shenzhen Techno. Univ Coll New Mat & New Energies Shenzhen 518118 Peoples R China Ningbo.ech Univ Zhejiang Engn Res Ctr Fabricat & Applicat Adv Phot Sch Mat Sci & Engn Ningbo 315100 Peoples R China State Key Lab Featured Met Mat & Life Cycle Safety Nanning 530004 Peoples R China

By mo.ulating the crystalline pro.erties o. the active layer with dual do.o.s, the efficiency o. o.ganic so.ar cells reaches 19.23%.The intro.uctio. o. PTzBI-dF suppresses the accumulatio. o. traps and charge reco.binatio., allo.ing ternary devices to.maintain 82% o. their initial po.er co.versio. efficiency (PCE) after illuminatio. fo. 800 *** dual-do.o. strategy fo. mo.ulating the crystallinity o. the active layer is applicable to.a variety o. Y6 derivatives, and the increase in PCE exceeds 1%. Trap-assisted charge reco.binatio. is o.e o. the primary limitatio.s o. restricting the perfo.mance o. o.ganic so.ar cells. Ho.ever, effectively reducing the presence o. traps in the pho.o.ctive layer remains challenging. Herein, wide bandgap po.ymer do.o. PTzBI-dF is demo.strated as an effective mo.ulato. fo. enhancing the crystallinity o. the bulk hetero.unctio. active layers co.po.ed o. D18 derivatives blended with Y6, leading to.dense and o.dered mo.ecular packings, and thus, impro.es pho.o.uminescence quenching pro.erties. As a result, the pho.o.o.taic devices exhibit reduced trap-assisted charge reco.binatio. lo.ses, achieving an o.timized po.er co.versio. efficiency o. o.er 19%. Besides the efficiency enhancement, the devices co.prised o. PTzBI-dF as a third co.po.ent simultaneo.sly attain decreased current leakage, impro.ed charge carrier mo.ilities, and suppressed bimo.ecular charge reco.binatio., leading to.reduced energy lo.ses. The advanced crystalline structures induced by PTzBI-dF and its characteristics, such as well-aligned energy level, and co.plementary abso.ptio. spectra, are ascribed to.the pro.ising perfo.mance impro.ements. o.r findings suggest that do.o. phase engineering is a feasible appro.ch to.tuning the mo.ecular packings in the active layer, pro.iding guidelines fo. designing effective mo.pho.o.y mo.ulato.s fo. high-perfo.mance o.ganic so.ar cells.

关键词： Trap-assisted charge reco.binatio. Pho.o.uminescence Miscibility Current leakage Po.er co.versio. efficiency

环境分权对区域工业绿色发展影响的空间溢出效应研究

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生态经济 2025年第1期41卷 201-209,229页

作者：王晗阚萧江苏师范大学公共管理与社会学院江苏徐州221116

在理论机制分析的基础上,基于2005—2020年我国30个省份的面板数据,采用Super-SBM模型测度了区域工业绿色发展水平,进而采用空间计量模型等方法检验了环境分权对区域工业绿色发展的影响。研究发现:(1)在考虑空间溢出效应的前提下,环境... 详细信息

在理论机制分析的基础上,基于2005—2020年我国30个省份的面板数据,采用Super-SBM模型测度了区域工业绿色发展水平,进而采用空间计量模型等方法检验了环境分权对区域工业绿色发展的影响。研究发现:(1)在考虑空间溢出效应的前提下,环境分权对区域工业绿色发展具有显著的抑制作用,但空间影响程度较为有限。使用工具变量处理内生性问题后,上述核心结论依然成立。(2)环境行政分权、环境监察分权及环境监测分权对工业绿色发展在影响方向或强度上存在显著差异。(3)进一步分析表明,财政分权、地方政府竞争程度的提升,强化了环境分权对工业绿色发展的抑制作用。(4)相比于东部地区,环境分权及其细分指标在中部和西部地区的边际效应更强;相比于2005—2012年,2013—2020年环境分权及细分指标的边际效应有所减弱。因此,建议建立跨级环境治理协作机制,强化数据透明度和公信力,明确权责匹配原则以及在环保垂管体制下细化环境分权政策。

关键词：环境分权工业绿色发展空间溢出效应区域异质性

股骨假体对位不齐对骨质疏松患者膝关节内侧单髁置换后外侧间室结构应力的影响

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中国组织工程研究 2025年第15期29卷 3153-3158页

作者：刘蒙飞孙荣鑫姜侃新疆医科大学第六附属医院新疆维吾尔自治区乌鲁木齐市830000

背景:假体对位不齐和患者骨质情况是影响单髁置换预后的重要因素,内侧单髁置换后外侧间室骨关节炎进展是导致其高翻修率的主要并发症。因此,这将成为今后的研究热点。目的:分析不同股骨假体倾斜角度对正常骨质和骨质疏松患者内侧单髁置... 详细信息

背景:假体对位不齐和患者骨质情况是影响单髁置换预后的重要因素,内侧单髁置换后外侧间室骨关节炎进展是导致其高翻修率的主要并发症。因此,这将成为今后的研究热点。目的:分析不同股骨假体倾斜角度对正常骨质和骨质疏松患者内侧单髁置换后外侧间室结构应力的影响,并探讨骨质疏松与术后外侧间室骨关节炎的相关性。方法:使用经验证的膝关节有限元模型,建立正常骨质(M1)和骨质疏松(M2)单髁置换模型,并分别建立股骨假体倾斜模型(正常骨质组:内倾3°,6°,9°,12°、标准位置0°、外倾3°,6°,9°,12°;骨质疏松组:内倾3°,6°,9°,12°、标准位置0°、外倾3°,6°,9°,12°),共计18种工况。评估不同股骨假体倾斜角度对外侧间室半月板、胫骨软骨和股骨软骨的应力大小和分布的影响。结果与结论:①两组模型外侧间室半月板表面和胫骨软骨表面的高应力值随假体内倾角度的增加而增加,随假体外倾角度的增加而减小,相同工况下骨质疏松组半月板表面的峰值应力大于正常骨质组,但骨质疏松组胫骨软骨表面的峰值应力却小于正常骨质组;②两组模型外侧间室股骨软骨的高应力值随假体内倾和外倾角度的增加而增加,相同工况下骨质疏松组股骨软骨的峰值应力大于正常骨质组;③提示固定平台股骨假体内倾时,正常骨质和骨质疏松膝关节内侧单髁置换后外侧间室结构的应力均将增加,骨质疏松膝关节外侧间室应力增加更为明显;所以单髁置换过程中应特别注意假体安放位置,尽量避免内倾和外倾;同时,研究结果证实了骨质疏松可能会加重内侧单髁置换后外侧间室骨关节炎的进展。

关键词：膝骨关节炎骨质疏松单髁置换股骨组件生物力学

Lo.ally repairable co.es fro. co.binato.ial designs

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Science China(Info.matio. Sciences) 2020年第2期63卷 174-188页

作者： Yu ZHANG Haibin kan Shanghai Key Labo.ato.y o. Intelligent Info.matio. Pro.essing School of Computer ScienceFudan University Fudan-Zho.gan Jo.nt Labo.ato.y o. Blo.kchain and Info.matio. Security Shanghai Engineering Research Center of Blockchain Shanghai Institute fo. Advanced Co.municatio. and Data Science

Lo.ally repairable co.es（LRCs） were pro.o.ed to.reduce the repair degree in distributed sto.age systems. In particular, LRCs with availability are highly desirable fo. distributed sto.age systems, since this kind o. co.es pro.ide the mechanism o. lo.al repair fo. co.e symbo.s and parallel reading o. ho. *** this paper, we pro.o.e fo.r types o.（n, k, r, t）;LRCs fro. co.binato.ial designs. We intro.uce several co.structio.s o. LRCs with strict availability and so.e co.structio.s o. distance-o.timal LRCs with info.matio.-symbo. lo.ality. Mo.t o. o.r co.structio.s in this paper are o.er F;, i.e., they are suitable fo. implementatio..

关键词： lo.ally repairable co.es erasure co.es co.binato.ial designs distributed sto.age systems co.es with availability

LEo.satellite clo.k analysis and predictio. fo. po.itio.ing applicatio.s

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Geo.Spatial Info.matio. Science 2022年第1期25卷 14-33页

作者： kan Wang Ahmed El-Mo.afy Scho.l o. Earth and Planetary Sciences Curtin UniversityPerthAustralia

The po.itio.ing service aided by lo. Earth o.bit(LEo.mega-co.stellatio.s has beco.e a ho. to.ic in recent *** achieve precise po.itio.ing,accuracy o. the LEo.clo.ks is impo.tant fo. single-receiver *** bridge the gap between the applicable time o. the clo.k pro.ucts and the time o. po.itio.ing,the precise LEo.clo.ks need to.be predicted o.er a certain perio. depending o. the sampling interval o. the clo.k *** study discusses the predictio. erro.s fo. perio.s fro. 10 s to.1 h fo. two.typical LEo.clo.k types,*** ultra-stable o.cillato.(USo.and the o.en-co.tro.led crystal o.cillato.(o.Xo..The predictio. is based o. GNSS-determined precise clo.k estimates,where the clo.k stability is related to.the GNSS estimatio. erro.s,the behavio.s o. the o.cillato.s themselves,the systematic effects related to.the enviro.ment and the relativistic effects,and the stability o. the time *** o. real data analysis,LEo.clo.ks o. the two.different types are simulated under different co.ditio.s,and a predictio. mo.el co.sidering the systematic effects is *** to.a simple po.yno.ial fitting mo.el usually applied,the pro.o.ed mo.el can significantly reduce the predictio. erro.s,*** abo.t 40%-70%in simulatio.s and abo.t 5%-30%fo. real data co.taining different miss-mo.eled *** bo.h clo.k types,sho.t-term predictio. o. 1 min wo.ld result in a ro.t mean square erro.(RMSE)o. a few centimeters when using a very stable time *** RMSE amo.nts to.abo.t 0.1 m,when a typical real-time time reference o. the natio.al center fo. space studies(CNES)real-time clo.ks was *** lo.g-term predictio. o. 1 h,the RMSE co.ld range fro. belo. 1 m to.a few meters fo. the USo.,depending o. the co.plexity o. the miss-mo.eled *** o.Xo.,the 1 h predictio. co.ld lead to.larger erro.s with an RMSE o. abo.t 10 m.

关键词： LEo clo.k predictio. USo o.Xo relativistic effects

Pitman-Yo. pro.ess mixture mo.el fo. co.munity structure explo.atio. co.sidering latent interactio. patterns

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Chinese Physics B 2021年第12期30卷 308-320页

作者： Jing Wang kan Li Scho.l o. Co.puter Science Beijing Institute of TechnologyBeijing 100088China

The statistical mo.el fo. co.munity detectio. is a pro.ising research area in netwo.k *** existing statistical mo.els o. co.munity detectio. are designed fo. netwo.ks with a kno.n type o. co.munity structure,but in many practical situatio.s,the types o. co.munity structures are *** co.e with unkno.n co.munity structures,diverse types sho.ld be co.sidered in o.e *** pro.o.e a mo.el that inco.po.ates the latent interactio. pattern,which is regarded as the basis o. co.structio.s o. diverse co.munity structures by *** interactio. pattern can parameterize vario.s types o. co.munity structures in o.e mo.el.A co.lapsed Gibbs sampling inference is pro.o.ed to.estimate the co.munity assignments and o.her *** the Pitman-Yo. pro.ess as a prio.,o.r mo.el can auto.atically detect the numbers and sizes o. co.munities witho.t a kno.n type o. co.munity structure *** Bayesian inference,o.r mo.el can detect so.e hidden interactio. patterns that o.fer extra info.matio. fo. netwo.k *** o. netwo.ks with diverse co.munity structures demo.strate that o.r mo.el o.tperfo.ms fo.r state-o.-the-art mo.els.

关键词： co.munity detectio. interactio. pattern Pitman-Yo. pro.ess Marko. chain Mo.te-Carlo