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MXene Hybridized Polymer with Enhanced Electromagnetic Energy Harvest for Sensitized Microwave Actuation and Self‑Powered Motion Sensing

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Nano-Micro Letters 2025年第3期17卷 265-279页

作者： Yu‑Ze Wang Yu‑Chang Wang Ting‑Ting Liu Quan‑Liang Zhao Chen‑Sha Li Mao‑Sheng Cao School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081People’s Republic of China School of Materials Science and Engineering Peking UniversityBeijing 100871People’s Republic of China School of Mechanical and Material Engineering North China University of TechnologyBeijing 100144People’s Republic of China Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education of the People’s Republic of ChinaHeilongjiang UniversityHarbin 150080People’s Republic of China

Polymeric microwave actuators combining tissue-like softness with programmablemicrowave-responsive deformation hold great promise for mobile intelligentdevices and bionic soft robots. However, their application is challenged by restricted electromagneticsensitivity and intricate sensing coupling. In this study, a sensitized polymericmicrowave actuator is fabricated by hybridizing a liquid crystal polymer with Ti3C2Tx(MXene). Compared to the initial counterpart, the hybrid polymer exhibits unique spacechargepolarization and interfacial polarization, resulting in significant improvements of230% in the dielectric loss factor and 830% in the apparent efficiency of electromagneticenergy harvest. The sensitized microwave actuation demonstrates as the shortenedresponse time of nearly 10 s, which is merely 13% of that for the initial shape memory polymer. Moreover, the ultra-low content of MXene (upto 0.15 wt%) benefits for maintaining the actuation potential of the hybrid polymer. An innovative self-powered sensing prototype that combinesdriving and piezoelectric polymers is developed, which generates real-time electric potential feedback (open-circuit potential of ~ 3 mV) duringactuation. The polarization-dominant energy conversion mechanism observed in the MXene-polymer hybrid structure furnishes a new approachfor developing efficient electromagnetic dissipative structures and shows potential for advancing polymeric electromagnetic intelligent devices.

关键词： Microwave absorption Electromagnetic response Energy harvest Self-sensing Soft actuator

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Nonlinear Aeroelastic Model Considering RANS Unsteady Aerodynamics with Dynamically Linearized Time-domain Approach

Nonlinear Aeroelastic Model Considering RANS Unsteady Aerody...

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AIAA science and Technology Forum and Exposition, AIAA SciTech Forum 2025

作者： Serafim, Luisa Piccolo Dowell, Earl H. Duke University Department of Mechanical Engineering and Materials Science DurhamNC27708 United States

ISBN: (数字)9781624107238

ISBN: (纸本)9781624107238

A nonlinear aeroelastic model for a flexible panel is expanded to consider the effect of the viscous boundary layer using a RANS solver. This study presents the use of a Reduced Order Model (ROM) to compute the generalized aerodynamic force from a CFD simulation and compares the results obtained using the same approach with an inviscid solver and the analytical implementation of Full Potential Flow Aerodynamics. The flutter onset critical condition is obtained based on the Limit Cycle Oscillation amplitudes, for different supersonic Mach numbers. Additionally, the effect of different viscous boundary layer thicknesses is explored. Conclusions are made based on the use and application of this more complete aerodynamic theory, particularly for near transonic Mach numbers. © 2025, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.

关键词： Time domain analysis

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Boosting bulk photovoltaic effect in transition metal dichalcogenide by edge semimetal contact

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Light(science & Applications) 2025年第1期14卷 197-205页

作者： Shuang Qiao Jihong Liu Chengdong Yao Ni Yang Fangyuan Zheng Wanqing Meng Yi Wan Philip C.Y.Chow Dong-Keun Ki Lijie Zhang Yumeng Shi Lain-Jong Li Hebei Key Laboratory of Optic-Electronic Information and Materials College of Physics Science and TechnologyHebei University071002BaodingChina Department of Mechanical Engineering The University of Hong KongHong KongChina Department of Physics and HK Institute of Quantum Science&Technology The University of Hong KongHong KongChina Key Laboratory of Carbon Materials of Zhejiang Province College of Chemistry and Materials EngineeringWenzhou UniversityWenzhouChina Key Laboratory of Luminescence and Optical Information Ministry of EducationSchool of Physical Science and EngineeringBeijing Jiaotong University100044BeijingChina

Oxide materials with a non-centrosymmetric structure exhibit bulk photovoltaic effect(BPVE)but with a low cell *** the past few years,relatively larger BPVE coefficients have been reported for two-dimensional(2D)layers and stacks with asymmety-induced spontaneous ***,we report a crucial breakthrough in boosting the BPVE in 3R-MoS2 by adopting edge contact(EC)geometry using bismuth semimetal *** clear contrast to the typically used top contact(TC)geometry,the EC metal which strongly adheres to the edges and the subtrates can induce a pronounced tensile strain to the 3R-MoS2,and the lateral contact geometry allows to completely access to in-plane polarization from underneath layers reachable by light,leading to>100 times of BPVE enhancement in *** further design a 3R-MoS2/WSe2 heterojunction to demonstrate constructive coupling of BPVE with the conventional photovoltaic effect,indicating their potential in photodetectors and photovoltaic devices.

关键词： effect geometry breakthrough

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Mesoporous WO3-Dot-Decorated Flexible Electrodes for the Determination of Industrial Pollutants

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Energy & Environmental materials 2025年第2期8卷 277-287页

作者： Aneesh Koyappayil Hyunho Seok Gwan Hyun Choi Sachin Chavan Sangho Yeon Sihoon Son Anna Go Jinhyoung Lee Keon-Woo Kim Dongho Lee Hyun-Bin Choi Hyeong-U Kim Jin Kon Kim Taesung Kim Min-Ho Lee School of Integrative Engineering Chung-Ang University SKKU Advanced Institute of Nanotechnology (SAINT) Sungkyunkwan University Materials Architecturing Research Center Korea Institute of Science and Technology (KIST) School of Mechanical Engineering Sungkyunkwan University National Creative Research Initiative Center for Hybrid Nano Materials by High-level Architectural Design of Block Copolymer Pohang University of Science and Technology (POSTECH) Department of Semiconductor Convergence Engineering Sungkyunkwan University Semicondcutor Manufacturing Research Center Korea Institute of Machinery and Materials (KIMM) Department of Nano-Mechatronics University of Science and Technology (UST)

This study demonstrates the fabrication of mesoporous tungsten trioxide（WO3）-decorated flexible polyimide（PI） electrodes for the highly sensitive detection of catechol（CC） and hydroquinone（HQ）,two environmental ***-inorganic composite dots are formed on flexible PI electrodes using evaporation-induced self-assembly（EISA） and electrospray *** EISA process is induced by a temperature gradient during electrospray,and the heated substrate partially decomposes the organic parts etched by O2plasma,creating mesoporous *** pulse voltammetry and cyclic voltammetry demonstrate a linear correlation between analyte concentration and the electrochemical *** studies support the spontaneous adsorption of CC and HQ molecules on model *** proposed sensor shows high sensitivity,a wide linear range,and a low detection limit for both individual and simultaneous determination of CC and *** sample analysis on river water confirms practical *** WO3-decorated PI electrode presents an efficient and reliable approach for detecting these pollutants,contributing to environmental safety measures.

关键词： catechol flexible sensor hydroquinone mesoporous WO3 simultaneous determination

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La-substituted W-type barium-nickel ferrites for tunable and high-performance electromagnetic wave absorption

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International Journal of Minerals,Metallurgy and materials 2025年第3期32卷 645-656页

作者： Long Wang Jiurong Liu Shenghui Xie Yanli Deng Zhou Wang Shanyue Hou Shengying Yue Gang Wang Na Wu Zhihui Zeng Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials(Ministry of Education) School of Materials Science and EngineeringShandong UniversityJinan 250061China Electronic Materials Research Laboratory Key Laboratory of the Ministry of Education and International Center for Dielectric ResearchSchool of Electronic Science and EngineeringXi’an Jiaotong UniversityXi’an 710049China Army Engineering University of PLA College of Field Engineering Nanjing 210007China Laboratory for Multiscale Mechanics and Medical Science State Key Laboratory for Strength and Vibration of Mechanical StructuresSchool of AerospaceXi’an Jiaotong UniversityXi’an 710049China Department of Electrical and Computer Engineering Beckman Institute for Advanced Science and TechnologyUniversity of Illinois at Urbana-ChampaignUrbana 61801USA School of Chemistry and Chemical Engineering Shandong UniversityJinan 250100China

W-type barium-nickel ferrite(BaNi_(2)Fe_(16)O_(27))is a highly promising material for electromagnetic wave(EMW)absorption be-cause of its magnetic loss capability for EMW,low cost,large-scale production potential,high-temperature resistance,and excellent chemical ***,the poor dielectric loss of magnetic ferrites hampers their utilization,hindering enhancement in their EMW-absorption *** efficient strategies that improve the EMW-absorption performance of ferrite is highly desired but re-mains ***,an efficient strategy substituting Ba^(2+)with rare earth La^(3+)in W-type ferrite was proposed for the preparation of novel La-substituted ferrites(Ba_(1-x)LaxNi_(2)Fe_(15.4)O_(27)).The influences of La^(3+)substitution on ferrites’EMW-absorption performance and the dissipative mechanism toward EMW were systematically explored and ***^(3+)efficiently induced lattice defects,enhanced defect-induced polarization,and slightly reduced the ferrites’bandgap,enhancing the dielectric properties of the ***^(3+)also enhanced the ferromagnetic resonance loss and strengthened magnetic *** effects considerably improved the EMW-absorption perform-ance of Ba_(1-x)LaxNi_(2)Fe_(15.4)O_(27)compared with pure W-type *** x=0.2,the best EMW-absorption performance was achieved with a minimum reflection loss of-55.6 dB and effective absorption bandwidth(EAB)of 3.44 GHz.

关键词： electromagnetic wave absorption W-type barium ferrite rare earth dielectric

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In-situ bond-assisted aqueous binder for enhancing sodium storage in ionic conductor-modified black phosphorus/carbon anodes

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Journal of Energy Chemistry 2025年第4期103卷 188-199页

作者： Bo Yan Longfeng Chen Yanping Li Hui Ma Wei Xiao Meihua Zhong Lulu Zhang Xuelin Yang Xifei Li Collaborative Innovation Center for Microgrid of New Energy College of Electrical Engineering&New EnergyChina Three Gorges UniversityYichang 443002HubeiChina Xi’an Key Laboratory of New Energy Materials and Devices Institute of Advanced Electrochemical Energy&School of Materials Science and EngineeringXi’an University of TechnologyXi’an 710048ShaanxiChina College of Materials and Chemical Engineering China Three Gorges UniversityYichang 443002HubeiChina College of Mechanical and Electrical Engineering Hubei Three Gorges PolytechnicYichang 443002HubeiChina

Black phosphorus(BP)is recognized as a promising anode for sodium-ion batteries(SIBs)due to its high safety and theoretical ***,traditional ball milling methodologies for fabricating BP composite anodes have not satisfactorily addressed the challenges of poor rate performance and short cycle *** fill this scientific gap,we herein pioneer incorporating the sodium fast ionic conductorβ"-Al_(2)O_(3)into ball-milled BP with carbon,which facilitates the formation of three-dimensional mass transfer channels in the resulting *** stabilize these channels,we develop a novel and environmentally friendly functional binder that outperforms traditional binders in thermal stability,wettability,and mechanical *** newly established binder is capable of remarkably mitigating volume expansion and interfacial side reactions in the BP/β"-Al_(2)O_(3)/C composite ***,we identify synergistic effects of the binder interacting with the BP/β"-Al_(2)O_(3)/C composite during cycling,characterized by the in-situ formation of P-O-C bonds,which is the first instance of a strong,durable chemical bond between the binder and the active material to the best of our *** advancements allow the composite electrode to exhibit exceptional sodium storage,including high initial Coulombic efficiency and long-term cycling stability,which surpasses most previous phosphorus-based anodes fabricated via traditional ***,when paired with a Na_(4)Fe_(3)(PO_(4))_(2)P_(2)O_7(NFPP)cathode,the full cell exhibits unexpectedly high energy and power densities,highlighting the BP potential in *** findings presented in the present work contribute to the promotion of economical and efficient applications of phosphorus-based anode materials.

关键词： Black phosphorus anodes Fast ionic conductors Aqueous functional binders In-situ chemical bonds Sodium storage properties

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Interfacial Zn^(2+)-solvation regulator towards reversible and stable Zn anode

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Journal of Energy Chemistry 2025年第1期100卷 684-692页

作者： Miao Zhou Xiongbin Luo Hang Li Shan Guo Zhuang Tong Xiaotao Zhou Xu Li Zhaohui Hou Shuquan Liang Guozhao Fang College of Mechanical Engineering Key Laboratory of Hunan Province for Advanced Carbon-based Functional MaterialsHunan Institute of Science and TechnologyYueyang 414006HunanChina School of Materials Science and Engineering Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan ProvinceCentral South UniversityChangsha 410083HunanChina College of Materials and Metallurgy Guizhou UniversityGuiyang 550000GuizhouChina National Energy Metal Resources and New Materials Key Laboratory Central South UniversityChangsha 410083HunanChina

Aqueous zinc-ion batteries (AZIBs) are fundamentally challenged by the instability of the electrode/electrolyte interface,predominantly due to irreversible zinc (Zn) deposition and hydrogen ***,the intricate mechanisms behind the electrochemical discrepancies induced by interfacial Zn^(2+)-solvation and deposition behavior demand comprehensive *** molecules endowed with special functional groups (such as hydroxyl,carboxyl,etc.) have the potential to significantly optimize the solvation structure of Zn^(2+)and regulate the interfacial electric double layer (EDL).By increasing nucleation overpotential and decreasing interfacial free energy,these functional groups facilitate a lower critical nucleation radius,thereby forming an asymptotic nucleation model to promote uniform Zn ***,this study presents a pioneering approach by introducing trace amounts of n-butanol as solvation regulators to engineer the homogenized Zn (H-Zn) anode with a uniform and dense *** interfacial reaction and structure evolution are explored by in/ex-situ experimental techniques,indicating that the H-Zn anode exhibits dendrite-free growth,no by-products,and weak hydrogen evolution,in sharp contrast to the bare ***,the H-Zn anode achieves a remarkable Zn utilization rate of approximately 20% and simultaneously sustains a prolonged cycle life exceeding 500 ***,the H-Zn//NH_(4)V_(4)O^(10)(NVO) full battery showcases exceptional cycle stability,retaining 95.04%capacity retention after 400 cycles at a large current density of 5 A g^(-1).This study enlightens solvation-regulated additives to develop Zn anode with superior utilization efficiency and extended operational lifespan.

关键词： Aqueous zinc-ion batteries Zn^(2+)-solvation structure Interfacial reaction Asymptotic nucleation model Reversible and stable Zn anode

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In Vitro Corrosion Behavior and mechanical Property of Novel Mg-Sn-In-Ga Alloys for Orthopedic Applications

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Acta Metallurgica Sinica(English Letters) 2025年第3期38卷 353-366页

作者： Jing Wang Xuejian Wang Zongning Chen Huijun Kang Tongmin Wang Enyu Guo School of Mechanical Engineering Guizhou UniversityGuiyang 550025China Key Laboratory of Solidifcation Control and Digital Preparation Technology(Liaoning Province) School of Materials Science and EngineeringDalian University of TechnologyDalian 116024China Ningbo Institute of Dalian University of Technology Ningbo 315000China

This study develops novel Mg-Sn-In-Ga alloys as potential implant materials for orthopedic *** corrosion behavior of the Mg-Sn-In-Ga alloys was studied through mass loss measurements,hydrogen evolution measurements,electrochemical analysis,and corrosion morphology *** results show that the corrosion rate of the Mg-1Sn-1In-1Ga alloy was only 0.10±0.003 mm/y after immersion in Hank’s solution for 15 *** outstanding corrosion resistance was associated with the protective efect of the corrosion *** increase in the Sn and Ga element content led to the precipitation of a large amount of Mg_(2)Sn and Mg_(5)Ga_(2),which had a dominant efect on the corrosion rate in the Mg-5Sn-1In-2Ga *** precipitates increased the current density and detached from the alloy surface during the corrosion *** can lead to a weakened protective efect of the corrosion layer,and thus generate localized corrosion and an increase in the corrosion *** strength of the Mg-5Sn-1In-2Ga alloy was enhanced due to fne-grain strengthening and precipitation *** ultimate tensile strength and yield strength of the Mg-5Sn-1In-2Ga alloy were~309 MPa and~253 MPa,respectively.

关键词： Mg-Sn-In-Ga alloy Corrosion behavior Electrochemical measurements mechanical properties

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In-situ HRTEM observations of intermediate phase transformation in lattice reorientation in HCP rhenium

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材料科学技术（英文版） 2025年第3期206卷 15-25页

作者： Yang He Zhengwu Fang Bin Li Chongmin Wang Scott X.Mao Department of Mechanical Engineering and Materials Science University of PittsburghPittsburghPA 15261USA Department of Industrial and Manufacturing Systems Engineering Iowa State UniversityAmesIA 50011USA Environmental Molecular Sciences Laboratory Pacific Northwest National LaboratoryRichlandWashington 99352USA

In-situ high-resolution transmission electron microscopy(HRTEM)is performed to investigate the de-formation behavior of hexagonal close-packed rhenium(Re)which is compressed along the<1(1)00>*** simulations are also conducted to better understand the deformation *** types of lattice reorientation are observed during *** first type involves the reori-entation of one lattice by～90° around<11(2)0>,which is accomplished by the formation of an interme-diate face-center-cubic(FCC)phase at the *** transformation sequence can be described as{1(1)00}matrix →{111}FCC →(0001)*** the second type,a new grain is formed but does not satisfy any known twin relationship with the matrix,and an intermediate FCC phase is also *** transfor-mation sequence can be described as{1(1)01}matrix →{111｝FCC →(0001)*** responsible for the observed lattice reorientation and sequential phase transitions are analyzed by conducting lattice correspondence analyses on the simulation *** accommodation is also analyzed to explain the mechanisms for lattice reorientation and the intermediate phase *** results provide new insight into the deformation behavior of HCP metals.

关键词： Lattice reorientation Phase transformation Lattice correspondence

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锡基硫化物电催化剂中强且均匀的Sn–S键促进CO2到甲酸盐的高效转化（英文）

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science China materials 2025年第5期68卷 1602-1610页

作者：侯国禹崔洪花李亿程刘亚杨振艺赵明罗中箴邹志刚张玉 School of Mechanical and Power Engineering East China University of Science and Technology Laboratory of Eco-materials Advanced Technology College of Materials Science and EngineeringFuzhou University Department of Materials Science and Engineering National University of Singapore Eco-materials and Renewable Energy Research Center College of Engineering and Applied SciencesNanjing University

电化学CO2还原反应（CO2RR）是缓解全球CO2过量排放的有效途径之一.相比于单纯的金属催化剂,金属硫化物普遍具有更高的甲酸盐选择性及活性,因此被认为是一类独特的CO2RR电催化剂.然而,该类催化剂在负电位易发生组分还原,从而导致S元素... 详细信息

电化学CO2还原反应（CO2RR）是缓解全球CO2过量排放的有效途径之一.相比于单纯的金属催化剂,金属硫化物普遍具有更高的甲酸盐选择性及活性,因此被认为是一类独特的CO2RR电催化剂.然而,该类催化剂在负电位易发生组分还原,从而导致S元素大量溢出.在此,我们合成了一系列具有高结晶度的硫化锡（SnS,Sn2S3和SnS2）作为模型催化剂,揭示了Sn–S键强在原子构型上的分布对甲酸盐生成选择性及活性的影响规律.其中,SnS2具有较强且均匀分布的Sn–S键,能够有效抑制S溢出,形成有利于CO2RR的Sn/SnS2异质界面;而SnS的Sn–S键强较弱,导致其在CO2RR过程中快速还原成惰性金属Sn.而具有混合键强的Sn2S3则从最弱的Sn–S键开始断裂,引发了更加快速的组分还原,表现出较差的CO2RR性能.因此,S nS2表现出最高的甲酸盐法拉第效率9 3.8%±0.5 9%(-1.0VRHE)及最高的偏电流密度(195.3 mA cm-2,-1.2 VRHE).该工作为深入理解金属基硫化物中金属-硫键强及其分布对CO2RR制甲酸盐的影响提供一定的科学依据.

关键词： CO2 reduction tin sulfides bond strength formate S loss

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