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Machine learning-assisted multi-stage highly sensitive electronic skin tactile sensing tracking platform

Science China materials 2025年

作者： Shun Liu Ziqi Wang Duo Pan Hu Liu State Key Laboratory of Structural Analysis Optimization and CAE Software for Industrial Equipment National Engineering Research Center for Advanced Polymer Processing Technology Zhengzhou University

Human skin sensory system, featuring a sophisticated threedimensional(3D) distribution of mechanoreceptors within the skin, possesses an exceptional ability to perceive a diverse range of external mechanical stimuli a...

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A Transparent Polymer-Composite Film for Window Energy Conservation

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纳微快报（英文版） 2025年第7期17卷 1-11页

作者： Xianhu Liu Haoyu Zhang Yamin Pan Jun Ma Chuntai Liu Changyu Shen College of Materials Science and Engineering State Key Laboratory of Structural AnalysisOptimization and CAE Software for Industrial EquipmentNational Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou 450002People's Republic of China UniSA STEM and Future Industries Institute University of South AustraliaAdelaideSA 5095Australia College of Materials Science and Engineering State Key Laboratory of Structural AnalysisOptimization and CAE Software for Industrial EquipmentNational Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou 450002People's Republic of China UniSA STEM and Future Industries Institute University of South AustraliaAdelaideSA 5095Australia

As living standards improve,the energy consumption for regulating indoor temperature keeps ***,in particular,enhance indoor bright-ness but also lead to increased energy loss,especially in sunny *** a product that can maintain indoor brightness while reducing energy consumption is a *** developed a facile,spectrally selec-tive transparent ultrahigh-molecular-weight polyethylene composite film to address this *** is based on a blend of antimony-doped tin oxide and then spin-coated hydrophobic fumed silica,achieving a high visible light transmittance(＞70％)and high shielding rates for ultra-violet(＞90％)and near-infrared(＞70％).When applied to the acrylic window of containers and placed outside,this film can cause a 10 ℃ temperature drop compared to a pure polymer ***,in building energy simulations,the annual energy savings could be between 14.1％～31.9％per *** development of energy-efficient and eco-friendly transparent films is crucial for reducing energy consumption and promoting sustainability in the window environment.

关键词： Energy conservation Polymer Transparent films Composite Radiative cooling

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Polymeric ultralong organic phosphorescence with excellent humidity and temperature resistance via hydrophobic effect

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Aggregate 2024年第2期5卷 222-228页

作者： Zhongyu Li Kexin Fu Huangjun Deng Kaixuan Nie Zhe Pan Zhu Mao Juan Zhao Gang Li Pengli Zhu Zhenguo Chi Rong Sun National Key Laboratory of Materials for Integrated Circuits Shenzhen Institute of Advanced Electronic MaterialsShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenChina PCFM Lab GDHPPC LabGuangdong Engineering Technology Research Center for High-performance Organic and Polymer Photoelectric Functional FilmsState Key Laboratory of OEMTSchool of ChemistrySun Yat-sen UniversityGuangzhouChina State Key Laboratory of Optoelectronic Material and Technologies School of Materials Science and EngineeringSun Yat-sen UniversityGuangzhouChina

Polymeric ultralong organic phosphorescence(UOP)with persistent emission is of great importance in practical ***,achieving good water-resistance for long-term environmental stability is a formidable *** this contribution,through tailoring the alkyl-chain length of the hardeners and emitters,polymeric UOPs with varying crosslinking density and hydrophobic effect were ***,all the polymers show no obvious decrease in UOP emission after high temperature-humidity test(85℃/85%relative humidity for 7 days).Detailed investigations demonstrate that the rigid covalent crosslinking networks suppress the quenching of triplet excitons while the hydrophobic microenvironment affords good water/moisture-resistance ***,the polymers with superior processability are successfully applied as optical coatings,prepreg,and afterglow *** this work,we provide a new strategy to promote the long-term stability of polymeric UOP materials in high-temperature-humidity conditions.

关键词： aqueous environment hydrophobic effect long-term stability polymeric phosphorescence room temperature phosphorescence

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Stretchable polymer composites with ultrahigh piezoelectric performance

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National Science Review 2023年第8期10卷 203-210页

作者： Tongxiang Tang Zhonghui Shen Jian Wang Shiqi Xu Jiaxi Jiang Jiahui Chang Mengfan Guo Youjun Fan Yao Xiao Zhihao Dong Houbing Huang Xiaoyan Li Yihui Zhang Danyang Wang Long-Qing Chen Ke Wang Shujun Zhang Ce-Wen Nan Yang Shen State Key Lab of New Ceramics and Fine Processing School of Materials Science and Engineering Tsinghua University State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Center of Smart Materials and Devices Wuhan University of Technology Advanced Research Institute of Multidisciplinary Science Beijing Institute of Technology Applied Mechanics Laboratory Department of Engineering Mechanics Tsinghua University Center for Flexible Electronics Technology Tsinghua University School of Materials Science and Engineering University of New South Wales Department of Materials Science and Engineering The Pennsylvania State University State College Institute for Superconducting and Electronic Materials Australian Institute for Innovative MaterialsUniversity of Wollongong

Flexible piezoelectric materials capable of withstanding large deformation play key roles in flexible electronics. Ferroelectric ceramics with a high piezoelectric coefficient are inherently brittle, whereas polar polymers exhibit a low piezoelectric coefficient. Here we report a highly stretchable/compressible piezoelectric composite composed of ferroelectric ceramic skeleton, elastomer matrix and relaxor ferroelectric-based hybrid at the ceramic/matrix interface as dielectric transition layers, exhibiting a giant piezoelectric coefficient of 250 picometers per volt, high electromechanical coupling factor keff of 65%,ultralow acoustic impedance of 3MRyl and high cyclic stability under 50% compression strain. The superior flexibility and piezoelectric properties are attributed to the electric polarization and mechanical load transfer paths formed by the ceramic skeleton, and dielectric mismatch mitigation between ceramic fillers and elastomer matrix by the dielectric transition layer. The synergistic fusion of ultrahigh piezoelectric properties and superior flexibility in these polymer composites is expected to drive emerging applications in flexible smart electronics.

关键词： polymer composites piezoelectric materials structure design flexible electronics

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基于隧穿宽度调制的具有超高开态电流的二维Tl_(2)O隧穿场效应晶体管

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Science China materials 2024年第5期67卷 1661-1667页

作者：陈楚尧杨佳霖周文瀚胡学敏郭婷婷张胜利 Key Laboratory of Advanced Display Materials and Devices Ministry of Industry and Information TechnologyCollege of Material Science and EngineeringNanjing University of Science and TechnologyNanjing210094China School of Material Engineering Jinling Institute of TechnologyNanjing211169China

隧穿场效应晶体管作为后CMOS时代的低功耗器件引起了人们的极大关注.基于带间隧穿机制,隧穿场效应晶体管具有抑制亚阈值摆幅低于60 mV dec^(-1)的潜力.然而,与金属氧化物半导体场效应晶体管相比,传统隧穿场效应晶体管的开态电流相对较低... 详细信息

隧穿场效应晶体管作为后CMOS时代的低功耗器件引起了人们的极大关注.基于带间隧穿机制,隧穿场效应晶体管具有抑制亚阈值摆幅低于60 mV dec^(-1)的潜力.然而,与金属氧化物半导体场效应晶体管相比,传统隧穿场效应晶体管的开态电流相对较低,阻碍了其实际应用.在此,我们提出二维Tl_(2)O材料具有直接且合适大小的带隙,小的电子和空穴有效质量,独特的三重简并和强各向异性电子结构,这适合作为口袋掺杂隧穿场效应晶体管的沟道材料.得益于口袋导致的降低的隧穿宽度,栅极长度为10 nm的二维Tl_(2)O隧穿场效应晶体管具有3449μAμm^(-1)的超高开态电流,具有亚热的亚阈值摆幅,其值为49 mV dec^(-1).值得注意的是,与未实施口袋掺杂的情况相比,开态电流的值提高到441%,并且成功满足了国际设备和系统路线图对于2028年高性能器件的要求.这项工作展示了二维Tl_(2)O口袋隧穿场效应晶体管在下一代低功耗高性能纳米电子学中的巨大潜力.

关键词： first-principles calculations 2D materials electronic structure properties transport properties density functional theory

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Copper Ions Removal from Wastewater by Electrocoagulation Using Cement-based Cathode Plates

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Journal of Wuhan University of technology(materials Science) 2023年第2期38卷 387-393页

作者： YOU Song WU Jing WANG Shizhe WANG Wei LI Qiong ZAHNG Ganggang DING Qinjun WANG Luoxin College of Materials Science and Engineering State Key Laboratory of New Textile Materials&Advanced Processing TechnologyWuhan Textile UniversityWuhan430200China Department of Logistics Support Wuhan University of TechnologyWuhan430070China School of Materials Science and Engineering Wuhan University of TechnologyWuhan430070China

The present work uses PEO solution to well disperse carbon fiber and identifies percolation thresholds of carbon fiber and carbon black which are used as conductive *** resultant cathode plates have an average compressive strength of 27.3 MPa and flexural strength of 29.09 MPa,which demonstrate excellent mechanical *** Cu^(2+)removal efficiency was measured at different current densities in EC process with cement-based cathode plate,while the voltage changes were *** results showed that the cement-based cathode plate operated stably and achieved 99.7%removal of 1 L of simulated wastewater with a Cu^(2+)concentration of 200 ppm at a current density of 8 m A/cm^(2)for 1 *** of floc and tested cathode plates,SEM and EDS analyses,and repeatability testing of the tested plates demonstrate the reusability of the plates,proving that cement-based plates can effectively replace metal cathode plates,reduce the cost of EC and improve the applicability of EC devices.

关键词： electrocoagulation cathode plate cement-based conductive materials copper ions repeatability

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Predicted Pressure-Induced High-Energy-Density Iron Pentazolate Salts

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Chinese Physics Letters 2022年第8期39卷 47-52页

作者： Chuli Sun Wei Guo Yugui Yao Frontiers Science Center for High Energy Material(MOE) Beijing Institute of TechnologyBeijing 100081China Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement(MOE) School of PhysicsBeijing Institute of TechnologyBeijing 100081China State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing 100081China

Metal-pentazolate compounds as candidates for novel high-energy-density materials have attracted extensive attention in recent ***,dehydrated pentazolate salts of transition metal iron are rarely *** predict two new iron pentazolate salts Fdd2-FeN10 and P1(No.1)-FeN10 using a constrained crystal search method based on first-principles *** propose that the stable Fdd2-FeN_(10) crystal may be synthesized from FeN and N_(2) above 20 GPa,and its formation enthalpy is lower than the reported iron pentazolate salt(marked as P1(No.2)-FeN_(10)).Crystal P1(No.1)-FeN_(10) is composed of iron bispentazole *** enthalpy,phonon spectrum and ab initio molecular dynamics calculations are performed to show their thermodynamic,mechanical and dynamic ***,the high energy density(3.709 kJ/g,6.349 kJ/g)and good explosive performance indicate their potential applications as high-energy-density materials.

关键词： properties materials enthalpy

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Coral-like and binder-free carbon nanowires for potassium dual-ion batteries with superior rate capability and long-term cycling life

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Green Energy & Environment 2023年第2期8卷 548-558页

作者： Min Wang Qirong Liu Guangming Wu Jianmin Ma Yongbing Tang Functional Thin Films Research Center Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen518055China School of Physics and Electronics Hunan UniversityChangsha410082China Key Laboratory of Advanced Materials Processing&Mold Ministry of EducationZhengzhou UniversityZhengzhou450002China Guangdong-Hong Kong-Macao Joint Laboratory of Human-Machine Intelligence-Synergy Systems Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen518055China

Owing to the advantages of high operating voltage,environmental benignity,and low cost,potassium-based dual-ion batteries(KDIBs)have been considered as a potential candidate for large-scale energy ***,KDIBs generally suffer from poor cycling performance and unsatisfied capacity,and inactive components of conductive agents,binders,and current collector further lower their overall ***,we prepare coral-like carbon nanowres(CCNWs)doped with nitrogen as a binder-free anode material for K^(+)-ion storage,in which the unique coral-like porous nanostructure and amorphous/short-range-ordered composite feature are conducive to enhancing the structural stability,to facilitating the ion transfer and to boosting the full utilization of active sites during potassiation/de-potassiation *** a result,the CCNW anode possesses a hybrid K^(+)-storage mechanism of diffusive behavior and capacitive adsorption,and stably delivers a high capacity of 276 mAh g^(-1)at 50 mA g^(-1),good rate capability up to 2 A g^(-1),and long-term cycling stability with 93%capacity retention after 2000 cycles at 1 A g^(-1).Further,assembling this CCNW anode with an environmentally benign expanded graphite(EG)cathode yields a proof-of-concept KDIB,which shows a high specific capacity of 134.4 mAh g^(-1)at 100 mA g^(-1),excellent rate capability of 106.5 mAh g^(-1)at 1 A g^(-1),and long-term cycling stability over 1000 cycles with negligible capacity *** study provides a feasible approach to developing high-performance anodes for potassium-based energy storage devices.

关键词： Carbon nanowires Binder-free K-ion Dual-ion batteries Structural stability

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Mechanical property improving in ultrasonic assisted brazing SiCp/6061Al MMCs by an additional ultrasonic treatment 5

Mechanical property improving in ultrasonic assisted brazing...

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2024 5th International Conference on advanced materials and Intelligent Manufacturing, ICAMIM 2024

作者： Ma, Lin Zhang, Shufan Lu, Kaicheng Zhu, Chao Xu, Zhiwu School of Material Science and Engineering Shenyang Aerospace University Shenyang110036 China State Key Laboratory of Advanced Welding and Joining Harbin Institute of Technology Harbin150001 China

To meet the welding requirements of SiCp/6061Al metal-matrix composites (MMCs), this paper proposed an additional ultrasonic treatment (AUT) based on traditional ultrasonic-assisted brazing. The shear strength of SiCp/6061Al MMCs brazed joints was effectively improved by a secondary ultrasonic treatment using Sn-Zn solder. Compared with the conventional ultrasonic treatment (43.84 MPa), the strength of the AUT welded joint was increased by 20 MPa, as high as 64.17 MPa. Moreover, through the analysis of the microstructure and fracture structure, the microstructure formation process of the weld during the AUT was found and expressed. 2025 Published under licence by IOP Publishing Ltd.

关键词： Metallic matrix composites

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Rational design of hierarchically porous Fe-N-doped carbon as efficient electrocatalyst for oxygen reduction reaction and Zn-air batteries

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Nano Research 2021年第12期14卷 4768-4775页

作者： Zihan Meng Neng Chen Shichang Cai Jiawei Wu Rui Wang Tian Tian Haolin Tang Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu Hydrogen ValleyFoshan528200China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan430070China School of Material Science and Engineering Henan University of TechnologyZhengzhou450001China

The rational design and construction of hierarchically porous nanostructure for oxygen reduction reaction (ORR) electrocatalysts is crucial to facilitate the exposure of accessible active sites and promote the mass/electron transfer under the gas-solid-liquid triple-phase condition. Herein, an ingenious method through the pyrolysis of creative polyvinylimidazole coordination with Zn/Fe salt precursors is developed to fabricate hierarchically porous Fe-N-doped carbon framework as efficient ORR electrocatalyst. The volatilization of Zn species combined with the nanoscale Kirkendall effect of Fe dopants during the pyrolysis build the hierarchical micro-, meso-, and macroporous nanostructure with a high specific surface area (1,586 m^(2)·g^(−1)), which provide sufficient exposed active sites and multiscale mass/charge transport channels. The optimized electrocatalyst exhibits superior ORR activity and robust stability in both alkaline and acidic electrolytes. The Zn-air battery fabricated by such attractive electrocatalyst as air cathode displays a higher peak power density than that of Pt/C-based Zn-air battery, suggesting the great potential of this electrocatalyst for Zn-air batteries.

关键词： hierarchically porous structure Fe-N-doped carbon electrocatalysts oxygen reduction reaction Zn-air batteries

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