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Manipulating Piezoelectric and Electro-Strain Properties of BiFeO3-BaTiO3-Based Ceramics Through Chemical Doping-Controlled Domain-Size Engineering

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SSRN 2025年

作者： Lin, Jiamin Liu, Bing Liu, Mengxiang Yang, Shan Zhou, Linming Hong, Zijian Zhu, Xiaoli Wu, Yongjun Li, Juan Huang, Yuhui School of Materials Science and Engineering State Key Laboratory of Silicon and Advanced Semiconductor Materials Cyrus Tang Center for Sensor Materials and Applications Institute of Fundamental and Transdisciplinary Research Zhejiang University Hangzhou310027 China Nanhu Brain-computer Interface Institute Zhejiang Hangzhou311100 China College of Electronic Information and Engineering Hangzhou Dianzi University Zhejiang Hangzhou310018 China Zhejiang Key Laboratory of Advanced Solid State Energy Storage Technology and Applications Taizhou Institute of Zhejiang University Zhejiang Taizhou318000 China School of Engineering Hangzhou City University Zhejiang Hangzhou310015 China College of Materials and Science Engineering Zhejiang University of Technology Zhejiang Hangzhou310006 China

Ferroelectric domains are crucial for the performance of piezoelectric ceramics, as the size and switching dynamics affect polarization response directly, manipulating both ferroelectric and piezoelectric properties. In this study, we achieved BiFeO3-BaTiO3 ceramics with domain sizes from macroscopic to nanoscale by incorporating a small amount of antiferroelectric phase. Contrary to the long-standing belief that smaller ferroelectric domains own lower polarization switching barriers and yield higher piezoelectricity, we found that in chemical doping-controlled domain size engineering, the smaller the domain size, the more difficult it is for polarization switching. Ceramics with the largest domain exhibited superior positive piezoelectric performance due to the sufficient polarization switching and reduced domain wall pinning, achieving a piezoelectric coefficient (d33) of 460 pC/N at 350°C. Middle-sized domains achieved optimal electro-strain performance determined by the trade-off between the domain walls pinning and the increased local tetragonal or orthorhombic symmetries, with a strain (0.29%) and an excellent piezoelectric strain coefficient (d33*) of 726.4 pm/V at 160°C. This work provides novel insights into how domain-size engineering affects domain switching and local distortion, offering guidance for performance optimization of piezoelectric ceramics. © 2025, The Authors. All rights reserved.

关键词： Piezoelectricity

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Gel-derived NiO–MoS 2 for the scalable fabrication of bifunctional screen-printed electrodes for overall water splitting

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International Journal of Hydrogen Energy 2025年 139卷 247-256页

作者： Zhoveta Yhobu Muralikrishna Sreeramareddygari Chatuporn Phanthong Srinivasa Budagumpi Doddahalli H. Nagaraju Wachira Chaiworn Mithran Somasundrum Patsamon Rijiravanich Surawut Chuangchote Werasak Surareungchai Sensor Technology Laboratory Pilot Plant Development and Training Institute King Mongkut's University of Technology Thonburi Bangkhuntien-chaitalay Road Thakam Bangkok 10150 Thailand Centre for Nano and Material Sciences JAIN (Deemed–to–be University) Jain Global Campus Kanakapura Bangalore 562 112 Karnataka India Industrial Sensor Technology Research Team Biochemical Engineering and System Biology Research Group National Center for Genetic Engineering and Biotechnology National Science and Technology Development Agency at KMUTT (Bangkhuntien Campus) Bangkok 10150 Thailand Department of Chemistry School of Applied Sciences REVA University Kattigenahalli Yelahanka Bangalore 560 064 Karnataka India Department of Tool and Materials Engineering Faculty of Engineering King Mongkut's University of Technology Thonburi (KMUTT) 126 Prachauthit Rd. Bangmod Thungkru Bangkok 10140 Thailand Research Center for Advanced Materials for Energy and Environmental Technology (MEET) King Mongkut's University of Technology Thonburi (KMUTT) 126 Prachauthit Rd. Bangmod Thungkru Bangkok 10140 Thailand Nanoscience & Nanotechnology Graduate Programme Faculty of Science King Mongkut's University of Technology Thonburi Bangkhuntien-chaitalay Road Thakam Bangkok 10150 Thailand

The fabrication of flexible, free-standing electrodes is crucial for advancing renewable energy technologies, particularly in energy conversion and storage. Traditional electrode fabrication methods often involve complex procedures, high material wastage, and limited scalability, whereas screen printing offers a cost-effective, reproducible, and scalable approach for producing high-performance electrodes with uniform coatings. This study introduces a versatile screen-printing strategy for fabricating flexible carbon cloth (CC) electrodes using NiO–MoS 2 ink derived from a solvothermal method. The resulting screen-printed CC electrodes function as efficient bifunctional catalysts for the hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and overall water splitting in alkaline media. The NiO–MoS 2 screen-printed CC electrode exhibits excellent electrocatalytic performance, achieving an OER overpotential ( η 10 ) of 382 mV vs RHE with a Tafel slope of 75 mV/dec and HER overpotential ( η 10 ) of −159 mV vs RHE and Tafel slope of 116 mV/dec. To further demonstrate its bifunctionality, the NiO–MoS 2 screen-printed CC electrode was assembled into a water-splitting electrolyzer, requiring a cell voltage of 1.79 V to reach a current density of 10 mA/cm 2 and exhibiting outstanding operational durability. The robustness and structural integrity of the developed electrode is confirmed by the post-stability analysis, highlighting the potential of the methodology reported in this work for the scalable fabrication of high-performance electrodes for water splitting applications.

关键词： Screen printing

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Hydrogen spillover in CoNi/CoNiMo3O8 Mott-Schottky heterostructure facilitates ampere-level hydrogen generation

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Nano Energy 2025年 141卷

作者： Hao, Hongru Wang, Jiahui Wang, Zhe Li, Jingwei Jian, Zhou Liu, Bing Shen, Shuo Xu, Lingling Lv, Zhe Wei, Bo School of Physics Heilongjiang Provincial Key Laboratory of Advanced Quantum Functional Materials and Sensor Components Harbin Institute of Technology Harbin150001 China Department of Applied Physics Nanjing University of Science and Technology Nanjing210094 China Faculty of Engineering Science University of Bayreuth Bayreuth95448 Germany Laboratory and Equipment Management Division Harbin Institute of Technology Harbin150001 China School of Physics and Electronic Engineering Key Laboratory of Photonic and Electric Bandgap Materials Ministry of Education Harbin Normal University Harbin150025 China

Alkaline water electrolysis is a low-cost and sustainable hydrogen production technology, and the proper design of an active hydrogen evolution reaction (HER) catalyst is crucial. Interfacial modulation is an effective strategy for accelerating the electron and mass transfer rates in the HER, which leads to a significant decrease in the energy required for water splitting, particularly at ampere-level current densities. Herein, we report an in-situ constructed CoNi/CoNiMo3O8 Mott-Schottky electrocatalyst characterized by superwetting properties. Both experimental and density functional theory (DFT) calculations indicated that the built-in electric field (BEF) formed at the heterostructure interface can optimize the adsorption and desorption behavior of reaction intermediates and facilitate the hydrogen spillover process on CoNi/CoNiMo3O8. Accordingly, the CoNi/CoNiMo3O8 electrode exhibited superior HER activity, featuring a commendably low overpotential of 267 mV at 1000 mA cm−2 and a durable operation for 650 h under alkaline conditions. An anion-exchange membrane (AEM) electrolyzer using CoNi/CoNiMo3O8 as the cathode demonstrated exceptional performance, which reached a current density of 1000 mA cm−2 at 2.03 V and 60 °C. Our findings delineate a potential pathway for the design of high-performance and efficient Mott-Schottky electrocatalysts, offering a significant leap forward in the development of energy-efficient electrolytic systems for industrial hydrogen production. © 2025 Elsevier Ltd

关键词： Reaction intermediates

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Construction of CeO2-MOF nanorods with oxygen vacancies for nanozyme catalytic antibacterial application

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Journal of Industrial and Engineering Chemistry 2025年

作者： Yang, Meinan Wang, Nan Wang, Xu Zhang, Ruiyong Etim, Ini-lbehe Nabuk Yue, Mei-E. Duan, Jizhou Hou, Baorong Sand, Wolfgang College of Biological Engineering Qingdao University of Science and Technology Qingdao266042 China Key Laboratory of Advanced Marine Materials Key Laboratory of Marine Environmental Corrosion and Bio-fouling Institute of Oceanology Chinese Academy of Sciences Qingdao266071 China Marine Chemistry and Corrosion Research Group Department of Marine Science Akwa Ibom State University P.M.B. 1167 Uyo Nigeria Key Laboratory of Sensor Analysis of Tumor Marker Ministry of Education College of Chemistry and Molecular Engineering Qingdao University of Science and Technology Qingdao266042 China

Oxygen vacancies can provide active sites for catalysts, promoting catalytic activity. However, there are fewer nanozyme catalysts with oxygen vacancies. In this study, CeO2 metal–organic framework (CeO2-MOF) nanorods with oxygen vacancies are synthesized through a simple hydrothermal and calcination processes. The obtained CeO2-MOFs exhibit excellent nanozyme catalytic activity for antibacterial applications. The CeO2-MOF nanorods demonstrate intrinsic haloperoxidase-like activity by catalyzing the bromination of organic signaling compounds, outperforming the catalytic properties of pure CeO2. The activity of CeO2-MOF(6) is the best because of its large specific surface area of 103.638 m2/g, surpassing that of CeO2 at 74.752 m2/g. The oxygen vacancies are crucial in regulating the electronic structure of CeO2-MOFs, thereby improving the catalytic performance. The experiments of multiple substrates show that CeO2-MOF(6) exhibits good stability and recyclability. Additionally, CeO2-MOF(6) can catalyze the oxidation of Br- with H2O2 to the corresponding hypobromous acid (HBrO), which exhibits strong antibacterial activity against typical marine bacteria (Pseudomonas aeruginosa). This study expands the range of biomimetic enzyme materials. It provides an efficient and green perspective and strategy for developing antibacterial and antifouling biomimetic catalysts, which offers a sustainable alternative for industrial applications in marine coatings and environmental protection. © 2025

关键词： Nanorods

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The dual role of electrical stimulation in pain:from management to reconstruction

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Science Bulletin 2025年第7期70卷 1016-1021页

作者： Kehui Xu Yuxuan Ma Tao Ye Yuzhu Wang Yannan Xie Chaohui Li Franklin R.Tay Lina Niu Zhou Li Kai Jiao Department of Stomatology Tangdu HospitalState Key Laboratory of Oral&Maxillofacial Reconstruction and RegenerationSchool of StomatologyThe Fourth Military Medical UniversityXi’an 710038China State Key Laboratory of Oral&Maxillofacial Reconstruction and Regeneration National Clinical Research Center for Oral DiseasesShaanxi Key Laboratory of StomatologyDepartment of ProsthodonticsSchool of StomatologyThe Fourth Military Medical UniversityXi’an 710032China State Key Laboratory of Organic Electronics and Information Displays&Institute of Advanced Materials(IAM) Jiangsu Key Laboratory for BiosensorsJiangsu National Synergetic Innovation Center for Advanced Materials(SICAM)Nanjing University of Posts and TelecommunicationsNanjing 210023China Department of Clinical Medicine Shanghai Smartee Denti-Technology Co.Ltd.Shanghai 201210China The Dental College of Georgia Augusta UniversityAugustaGA 30912USA School of Nanoscience and Technology University of Chinese Academy of SciencesBeijing 100083China CAS Center for Excellence in Nanoscience Beijing Key Laboratory of Micro-Nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing 100049China

Pain is a common sensory experience in our daily *** or recurrent pain affects over 30%of the global population,imposing a significant burden on individuals and ***,normal pain perception functions as a warning mechanism for the body and is essential for *** propagation of electrical signals is central to pain perception,and the capacity to modulate these signals is crucial for human pain ***,the applications for electrical stimulation in pain management are gradually expanding,offering patients innovative treatment ***,advancements in bionics have led to increased attention on reconstructing pain perception through artificial synapses,electronic skin,and ***,we focus on the dual role of electrical stimulation in both pain management and pain reconstruction,highlighting their shared developmental trends.

关键词： electrical stimulation modulate signals propagation electrical signals artificial synapses bionics electronic skin pain management pain reconstruction

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Real-Time LIDAR Imaging by Solid-State Single Chip Beam Scanner

Real-Time LIDAR Imaging by Solid-State Single Chip Beam Scan...

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IS and T International Symposium on Electronic Imaging: Autonomous Vehicles and Machines, AVM 2022

作者： Lee, Jisan Son, Kyunghyun Lee, Changbum Hwang, Inoh Jang, Bongyong Lee, Eun Kyung Shim, Dongshik Byun, Hyunil Shin, Changgyun Tatsuhiro, Otsuka Cho, YongChul Ha, Kyoungho Choo, Hyuck Advanced Sensor Lab. Samsung Advanced Institute of Technology Samsung Electronics Korea Republic of

We present a real-time light detection and ranging (LIDAR) imaging by developing a single-chip solid-state beam scanner. The beam scanner is integrated with a fully functional 32-channel optical phased array, 36 optical amplifiers, and a tunable laser at central wavelength ~1310 nm, all on a 7.5 × 3 mm2 single chip fabricated with III-V on silicon processes. The phased array is calibrated with self-evolving genetic algorithm to enable beam forming and steering in two dimensions. Distance measurement is performed with a digital signal processing that measures the time of flight (TOF) of pulsed light with a system consisting of an avalanche photodiode (APD), trans-impedance amplifier (TIA), analog-digital converter (ADC), and a processor. The LIDAR module utilizing this system can acquire point cloud images with 120 × 20 resolution with a speed of 20 frames per seconds at a distance up to 20 meters. This work presents the first demonstration of a chip-scale LIDAR solution without any moving part or bulk external light source or amplifier, making an ultra-low cost and compact LIDAR technology a reality. © 2022, Society for Imaging Science and technology.

关键词： Light sources

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Novel medium entropy perovskite oxide Sr(FeCoNiMo)_(1/4)O_(3−δ)for zinc-air battery cathode

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Journal of Energy Chemistry 2024年第9期96卷 669-678页

作者： Kaixin Li Juntao Gao Xu Han Qi Shao Zhe Lü School of Physics Harbin Institute of TechnologyHarbin 150001HeilongjiangChina Heilongjiang Provincial Key Laboratory of Advanced Quantum Functional Materials and Sensor Components Harbin 150001HeilongjiangChina

It is widely recognized that the development of ZABs is impeded by the kinetic bottleneck of oxygen evolution reaction(OER)and oxygen reduction reaction(ORR).The application of conformational entropy strategy to oxides often involves introducing multiple elements with different properties,thereby providing outstanding bifunctional catalytic activity for OER/***,the possible underlying catalytic pathways and potential interactions between various components are still poorly *** paper presents an excellent medium-entropy perovskite oxide,Sr(FeCoNiMo)_(1/4)O_(3−δ)(lower overpotential of 301 mV at 10 mA cm^(−2)).Zinc-air batteries employing it as a cathode catalyst demonstrate excellent round-trip efficiency(62%).By combining theoretical calculation with experiments,we aim to establish the link between the electronic structure of perovskite oxides with different elemental compositions and their OER *** reveals that the conformational entropy strategy can simultaneously shift the O 2p-band center and metal d-band center of perovskite oxide towards the vicinity of the Fermi energy level,thereby triggering a more favorable lattice oxygen-participated mechanism(LOM)during the OER *** outcomes of this work provide crucial insights into the role of conformational entropy strategies in oxygen catalysis and offer potential avenues for constructing efficient and stable electrocatalysts.

关键词： Sr(FeCoNiMo)_(1/4)O_(3−δ) Bifunctional catalyst Medium entropy LOM Rechargeable zinc-air batteries

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Palm-sized LiDAR module with III/V-on-Si optical phased array

Palm-sized LiDAR module with III/V-on-Si optical phased arra...

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2022 IEEE Symposium on VLSI technology and Circuits, VLSI technology and Circuits 2022

作者： Son, Kyunghyun Shin, Dongjae Lee, Jisan Jang, Bongyong Shim, Dongsik Byun, Hyunil Lee, Changbum Cho, Yongchul Otsuka, Tatsuhiro Shin, Changgyun Hwang, Inoh Lee, Eun Kyung Ha, Kyoungho Choo, Hyuck Samsung Advanced Institute of Technology Samsung Electronics Advanced Sensor Lab. Suwon Korea Republic of

ISBN: (纸本)9781665497725

We have implemented a compact, highly accurate light detection and ranging (LiDAR) module using our III/V-on-Si optical phased array (OPA). Our module measures only 1.4 liter in volume, and we demonstrated 20-m ranging and 10-m 3D imaging with 1-cm accuracy under 100-klx bright sunlight. The accuracy was improved by 300% from our previous work [1] by employing sub-binning-based digital signal processing (DSP). The small size and its robust 3D depth-sensing performance promise strong commercial viability. © 2022 IEEE.

关键词： Digital signal processing

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Selective growth of carbon nanotube on silicon substrates

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中国有色金属学会会刊：英文版 2006年第B01期16卷 377-380页

作者：邹小平 H.ABE T.SHIMIZU A.ANDO H.TOKUMOTO 朱申敏周豪慎 Research Center for Sensor Technology Beijing Information Technology InstituteBeijing 100101China Beijing Key Laboratory for Sensor Beijing 100101China Nanotechnology Research Institute National Institute of Advanced Industrial Science and Technology1-1-1 HigashiTsukubaIbalaki 305-8562Japan Energy Electronics Research Institute National Institute of Advanced Industrial Science and Technology1-1-1 UmezonoTsukubaIbalaki 305-8568Japan Nano-electronics Research Institute National Institute of Advanced Industrial Science and Technology1-1-1 UmezonoTsukubaIbalaki 305-8568Japan Nanotechnology Research Center Research Institute for Electronic ScienceHokkaido UniversitySapporo 001-0021Japan

The carbon nanotube (CNT) growth of iron oxide-deposited trench-patterns and the locally-ordered CNT arrays on silicon substrate were achieved by simple thermal chemical vapor deposition(STCVD) of ethanol vapor. The CNTs were uniformly synthesized with good selectivity on trench-patterned silicon substrates. This fabrication process is compatible with currently used semiconductor-processing technologies, and the carbon-nanotube fabrication process can be widely applied for the development of electronic devices using carbon-nanotube field emitters as cold cathodes and can revolutionize the area of field-emitting electronic devices. The site-selective growth of CNT from an iron oxide nanoparticle catalyst patterned were also achieved by drying-mediated self-assembly technique. The present method offers a simple and cost-effective method to grow carbon nanotubes with self-assembled patterns.

关键词： carbon nanotubes silicon substrate STCVD trench-patterned locally-ordered pattern

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Controlling Ion Conductance and Channels to Achieve Synapticlike Frequency Selectivity

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Nano-Micro Letters 2015年第2期7卷 121-126页

作者： Siheng Lu Fei Zeng Wenshuai Dong Ao Liu Xiaojun Li Jingting Luo Laboratory of Advanced Materials (MOE) School of Materials Science and Engineering Tsinghua University Institute of Thin Film Physics and Applications Shenzhen Key Laboratory of Sensor Technology Shenzhen University

Enhancing ion conductance and controlling transport pathway in organic electrolyte could be used to modulate ionic kinetics to handle signals. In a Pt/Poly(3-hexylthiophene-2,5-diyl)/Polyethylene?Li CF3SO3/Pt hetero-junction, the electrolyte layer handled at high temperature showed nano-fiber microstructures accompanied with greatly improved salt solubility. Ions with high mobility were confined in the nano-fibrous channels leading to the semiconducting polymer layer,which is favorable for modulating dynamic doping at the semiconducting polymer/electrolyte interface by pulse *** a device realized synaptic-like frequency selectivity, i.e., depression at low frequency stimulation but potentiation at high-frequency stimulation.

关键词： Ions migration Nano-channels Frequency selectivity Semiconducting polymer Organic electrolyte Dynamic doping

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