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Effects of dopants with varying cationic radii on the mechanical properties and hydrothermal aging stability of dental 3Y-TZP ceramics fabricated via vat photopolymerization

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Ceramics International 2025年第9期51卷 11857-11870页

作者： Sheng, Yang Wang, Li Dou, Rui Zhu, Fangyong Gao, Yufeng Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology School of Mechanical Engineering Jiangnan University Jiangsu Wuxi214122 China School of Mechanical Engineering Jiangnan University Jiangsu Wuxi214122 China Department of Stomatology Affiliated Hospital of Jiangnan University Jiangsu Wuxi214000 China Wuxi People's Hospital Jiangsu Wuxi214000 China School of Food Science and Technology Jiangnan University Wuxi China

In this study, the mechanical properties and hydrothermal aging stability of small amounts of cation dopant M-doped 3Y-TZP (M = Er2O3, CeO2, Nb2O5) prepared via vat photopolymerization were investigated. Four zirconia ceramic slurries with high solid content (58 vol%) and low viscosity were prepared by adding three different dopants, along with an undoped control. The phase composition and lattice parameters were analyzed using X-ray diffraction (XRD) and Rietveld refinement. The microstructure was examined via scanning electron microscopy (SEM). Mechanical properties were evaluated for hardness, toughness and the three-point flexural strength with Weibull analysis. Hydrothermal aging stability was also assessed. The dopants had little effect regarding the shrinkage and density of the ceramics in comparison to the undoped ceramics. However, the average grain size of sintered 3Y-TZP at 1500 °C increased with dopant addition. X-ray diffraction showed that both doped and undoped ceramics were predominantly tetragonal, although the monoclinic phase content increased with doping. The doped ceramics also exhibited improved fracture toughness. After 20 h of low-temperature degradation (LTD), 3Y-TZP ceramics exhibited a time-dependent transformation from the tetragonal to the monoclinic phase during aging, with the monoclinic phase content in the Er2O3-doped 3Y-TZP reaching only 18.30 %. Additionally, Er2O3-doped 3Y-TZP exhibited lower tetragonality (c/a√2 = 1.0142) and demonstrated flexural strength exceeding 800 MPa. Dental Er2O3-doped 3Y-TZP, prepared using the VPP technology, demonstrates high LTD resistance and excellent mechanical properties. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Rietveld refinement

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Versatile Wearable Interface: Multi-modal Tactile Sensing and Haptic Feedback for Human-Computer Interaction 5th

Versatile Wearable Interface: Multi-modal Tactile Sensing an...

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5th International Conference on Vibration and Energy Harvesting Applications, VEH 2024

作者： Liu, Ming Chen, Tao Zhu, Minglu Jiangsu Provincial Key Laboratory of Advanced Robotics School of Mechanical and Electric Engineering Soochow University Suzhou215123 China School of Future Science and Engineering Soochow University Suzhou215123 China

ISBN: (纸本)9789819611904

Human-machine interaction is an important aspect of exchanging information between the virtual reality world and the physical world. Haptic information interaction enables users to have immersive and efficient interactions, enhancing the overall experience. With the increasing number of tactile sensors and actuators in human-machine interaction systems, there are new requirements for multifunctional integration, lightweight energy consumption, and portability of devices. This paper proposes a human-machine interaction interface based on multi-modal haptic sensing and feedback fusion devices. This human-machine interaction interface has the following functions: touch-slip sensation sensing based on triboelectric-piezoelectric hybrid effect, vibration feedback, and pneumatic pressure feedback. We apply this human-machine interaction interface to robot digital twin interaction control, providing users with a more realistic control experience through the integration of haptic sensing and feedback. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.

关键词： Piezoelectric actuators

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Enhanced reactive oxygen species generation:Synergic process of three-electron oxygen reduction and electrochemical ozone production by bimetallic La-Nb oxides

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Journal of Energy Chemistry 2025年第5期104卷 155-165页

作者： Xiaoge Peng Xu Liu Xiaosa Wang Yuanan Li Suiqin Li Yuhang Wang Zhikang Bao Haoqiang Cao Yunyi Cao Xing Zhong Jianguo Wang Institute of Industrial Catalysis State Key Laboratory Breeding Base of Green-Chemical Synthesis TechnologyZhejiang University of TechnologyHangzhou 310032ZhejiangChina Innovation Research Center for Advanced Environmental Technology Eco-Industrial Innovation InstituteZJUTQuzhou 324400ZhejiangChina Advanced Technology Center Wuxi Little Swan Electric Co.LtdWuxi 214125JiangsuChina College of Chemical and Material Engineering Quzhou UniversityQuzhou 324000ZhejiangChina

The anodic electrochemical ozone production(EOP)and the cathodic three-electron oxygen reduction reaction(3e^(-)ORR)are effective processes for generating active oxygen species(ROS).However,the activation of ozone(O_(3))by hydroxyl radical(OH)to form ROS poses significant *** micelle balllike bimetallic La-Nb oxides(LNOx)have been developed as a bifunctional electrocatalyst for both the EOP and 3e^(-)ORR *** LNO20 demonstrated a 9.8%of Faradaic efficiency(FE)in O_(3)production and a transfer number of 2.8 electrons in the 3e^(-)*** calculations support the notion that the five-membered ring mechanism in LNO20 facilitates O_(3)***,the incorporation of La provides active sites that enhance the activation of hydrogen peroxide(^(*)H_(2)O_(2))and the generation of *** innovative approach synergistically integrates EOP and 3e^(-)ORR,enhancing the activation of O_(3)to produce ROS,demonstrating exceptional efficacy in the degradation of organic pollutants and antimicrobial *** study paves the way for designing advanced electrocatalysts for EOP and 3e^(-)ORR and offers insights into utilizing electrochemical method to support other antibacterial strategies.

关键词： Three electron oxygen reduction reaction Electrochemical ozone production Synergistic electrosynthesis Reactive oxygen species Antibacterial

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Pulse Signal Acquisition Using Flexible Sensing Dense Array with High Spatial Resolution 38

Pulse Signal Acquisition Using Flexible Sensing Dense Array ...

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38th IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2025

作者： He, Yue Sun, Ke Wang, Fang Tao, Tiger H Yang, Heng Sun, Yi Wang, Quan Li, Xinxin Jiangsu University Zhenjiang Key Laboratory of Advanced Sensing Materials and Devices Zhenjiang212013 China Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences State Key Laboratory of Transducer Technology Shanghai200050 China

ISBN: (纸本)9798331508890

This paper reports a pressure sensing array with high spatial resolution, which, in combination with the proposed cross-sectional feature algorithm, enables measurements with a positional accuracy of at least 0.1 mm. For the first time in human pulse wave testing experiments, we have visualized the lateral offset of the pulse wave. In addition, we found that some people, such as patients with fever and pain, have slightly larger pulse wave offsets than others, which may be described as 'tight pulse' in traditional Chinese medicine (TCM). © 2025 IEEE.

关键词： Pressure transducers

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Integrated Cross-Scale Manipulation and Modulable Encapsulation of Cell-Laden Hydrogel for Constructing Tissue-Mimicking Microstructures

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Research 2025年第1期2024卷 704-717页

作者： Yanfeng Zhao Xinyi Dong Yang Li Juan Cui Qing Shi Hen-Wei Huang Qiang Huang Huaping Wang Intelligent Robotics Institute School of Mechatronical EngineeringBeijing Institute of TechnologyBeijing 100081China Peking University First Hospital Xicheng DistrictBeijing 100034China Key Laboratory of Instrumentation Science and Dynamic Measurement Ministry of EducationNorth University of ChinaTaiyuan 030051China Beijing Advanced Innovation Center for Intelligent Robots and Systems Beijing Institute of TechnologyBeijing 100081China Laboratory for Translational Engineering Harvard Medical SchoolCambridgeMA 02139USA Key Laboratory of Biomimetic Robots and Systems (Beijing Institute of Technology) Ministry of EducationBeijing 100081China

Engineered microstructures that mimic in vivo tissues have demonstrated great potential for applications in regenerative medicine,drug screening,and cell behavior ***,current methods for engineering microstructures that mimic the multi-extracellular matrix and multicellular features of natural tissues to realize tissue-mimicking microstructures in vitro remain ***,we propose a versatile method for constructing tissue-mimicking heterogeneous microstructures by orderly integration of macroscopic hydrogel exchange,microscopic cell manipulation,and encapsulation ***,various cell-laden hydrogel droplets are manipulated at the millimeter scale using electrowetting on dielectric to achieve efficient hydrogel ***,the cells are manipulated at the micrometer scale using dielectrophoresis to adjust their density and arrangement within the hydrogel ***,the photopolymerization of these hydrogel droplets is triggered in designated regions by dynamically modulating the shape and position of the excitation ultraviolet ***,heterogeneous microstructures with different extracellular matrix geometries and components were constructed,including specific cell densities and *** resulting heterogeneous microstructure supported long-term culture of hepatocytes and fibroblasts with high cell viability(over 90%).Moreover,the density and distribution of the 2 cell types had significant effects on the cell proliferation and urea *** propose that our method can lead to the construction of additional biomimetic heterogeneous microstructures with unprecedented potential for use in future tissue engineering applications.

关键词： cell behavior explorationhowevercurrent tissue mimicking microstructures cell laden hydrogel electrowetting dielectric regenerative medicinedrug screeningand heterogeneous microstructures engineered microstructures orderly integration

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Promoting effect of d-band center and in-situ precipitation strategy on sulfur evolution reaction

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Journal of Energy Chemistry 2025年第5期104卷 740-748页

作者： Jun Pu Yun Tan Jiasen Yin Zihan Shen Shoujie Liu Kai Zhang Lei Zhou Yagang Yao Key Laboratory of Functional Molecular Solids Ministry of EducationAnhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage MaterialsCollege of Chemistry and Materials ScienceAnhui Normal UniversityWuhu 241002AnhuiChina National Laboratory of Solid State Microstructures College of Engineering and Applied SciencesJiangsu Key Laboratory of Artificial Functional MaterialsCollaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093JiangsuChina State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China School of Materials Science and Engineering Anhui UniversityHefei 230601AnhuiChina School of Energy and Power Engineering Jiangsu UniversityZhenjiang 212013JiangsuChina Department of Electrical Engineering Eindhoven University of TechnologyEindhoven MB 5600the Netherlands

The slow conversion of polyphase in lithium-sulfur(Li-S)batteries not only intensifies the shuttle effect of lithium polysulfides(LiPSs),but also causes the continuous accumulation of inactive sulfur species,resulting in rapid capacity attenuation and sluggish dynamic ***,the promoting effect of atomic interface stress on sulfur reaction was investigated via CoFe-CoFe_(2)O_(4)heterogeneous nanosheets with a cavity *** strain force induced by the in-situ precipitation of Co Fe bimetallic alloy in oxide matrix increased the d-band center,which was conducive to the interaction between catalyst and Li *** sulfur cathode based on this two-dimensional(2D)nanosheet design showed an extremely high capacity of 751 mAh g^(-1)at 4 *** with a sulfur loading of 5.55 mg cm^(-2),its area capacity was still as high as 7.15 mAh cm^(-2).Meanwhile,the enhanced stability greatly improved the practical potential of Li-S batteries.

关键词： 2D nanosheets In-situ precipitation Strain effect D-band center Li-S batteries

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Kerr-lens mode-locked Ho:CALYO laser at 2.1 µm

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Optics Express 2025年第8期33卷 18017-18023页

作者： Wang, Jing Yao, Weichao Liu, Jian Xu, Xiaodong Xu, Jun Leng, Yuxin State Key Laboratory of Ultra-intense Laser Science and Technology Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai201800 China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing100049 China Jiangsu Key Laboratory of Advanced Laser Materials and Devices Jiangsu Normal University Xuzhou221116 China School of Physics Science and Engineering Institute for Advanced Study Tongji University Shanghai200092 China

We report on a Kerr-lens mode-locked Ho laser operating at 2.1 µm, based on a disordered structure crystal Ho:CALYO. The laser-generated ultrashort pulses with a pulse duration of 177 fs and an average output power of 0.81 W at a repetition rate of 90 MHz, with an optical-to-optical efficiency of 11%. By optimizing the system for shorter pulse durations, we achieved pulses as short as 166 fs, though at a reduced output power of 0.18 W. The pulse duration and output power limitations were analyzed and discussed. © 2025 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement.

关键词： Pulse repetition rate

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Hydrogen radical-based prodrug photoactivation by modulating bond dissociation energy of a phenolic photosensitizer

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Science China Chemistry 2025年 1-14页

作者： Sun, Jian Peng, Jinlei Zhou, Junwei Zhang, Xiaoran Zhu, Chuanwei Wang, Rong Feng, Fude Wang, Shu Key Laboratory of High Performance Polymer Material and Technology of Ministry of Education Department of Polymer Science & Engineering School of Chemistry & Chemical Engineering Nanjing University Nanjing210023 China Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing100190 China State Key Laboratory of Coordination Chemistry Jiangsu Key Laboratory of Advanced Organic Materials Chemistry and Biomedicine Innovation Center School of Chemistry and Chemical Engineering Nanjing University Nanjing210023 China

Phenols are extremely difficult to release the hydrogen radical (H•) due to the disfavored O–H bond dissociation energy (BDE) and undergo O–H homolysis under strong ultraviolet-C (UVC) light. In this work, we provided a method to modulate the O–H BDE of phenols by π-conjugation to electron-donating heteroaromatics. Calculations on a phenol-cored photosensitizer (BTP-1) revealed drastic declines of O–H BDE (80.5 vs. 28.1 kcal mol−1) by comparing the ground state (S0) and triplet excited state (T1). Consequently, BTP-1 was sensitive to visible light and generated H• after O–H scission. With glutathione (GSH) serving as an ultimate H• donor, the BTP-1-based photosystem was efficient in catalyzing H• generation under physiological conditions. This kind of hydrogen atom-based photochemistry is distinct from traditional type I/II photosensitizing pathways that are electron or energy transfer-based. We applied the photosystem to solve the obstacle in hypoxia-activated prodrugs (HAPs) that face a dilemma with the heterogeneously hypoxic level of tumors. In vitro studies demonstrated that the photosystem boosted the chemotherapy performance of TH-302 (a representative HAP) under moderate hypoxia. With the capability to target redox bonds in HAPs and good compatibility with near-infrared two-photon laser, the photosystem is promising for cancer precision therapy. © Science China Press 2025.

关键词： Photodissociation

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Space-confined vapor deposited molecular ferroelectric film for photovoltaic devices

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Nano Research 2025年第3期18卷 611-618页

作者： Chen Wang Shan Cong Lingbo Xiao Chao-ran Huang Ruonan Wang Ruijie Li Lutao Li Guifu Zou Qiang Zhang College of Mechanical and Electronic Engineering Shandong University of Science and TechnologyQingdao 266590China College of Energy Soochow Institute for Energy and Materials Innovationsand Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu ProvinceSoochow UniversitySuzhou 215000China Department of Applied Physics Zhejiang University of Science and TechnologyHangzhou 310023China School of Advanced Energy Sun Yat-sen UniversityShenzhen 518107China

Molecular ferroelectrics,characterized by outstanding photoelectric and unique ferroelectric properties,invigorate the field of ferroelectric ***,the performance of molecular ferroelectric devices is hindered by fine grains resulting from poor high-temperature *** this work,we successfully achieved micron-grained molecular ferroelectric films by using the space-confined vapor deposited *** optimized film exhibited a significant increase in grain size from the nanometer level(0.08μm)to the micrometer level(~2μm),leading to improved optoelectronic and ***,it optimizes the energy level and enhances the photovoltaic performance of vertical *** on the mechanism shows that high annealing temperature and inhibiting component loss play an important role in obtaining large grain *** work provides new research ideas for improving the quality of molecular ferroelectric films and provides valuable reference for the fabrication of high performance molecular ferroelectric photovoltaic devices.

关键词： molecular ferroelectric large grain space confinement photovoltaic devices

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Enhancing performance of fullerene-based organic electrochemical transistors via side-chain engineering

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Nano Research 2025年第2期18卷 905-912页

作者： Wenxin Fang Zijie Li Chengdong Wang Xiaowei Zhao Junyu Li Gang Ye Fengwei Huo Li Qiu Yanxi Zhang Wei Huang Institute of Flexible Electronics(IFE Future Technologies)Xiamen UniversityXiamen 361005China Yunnan Key Laboratory of Electromagnetic Materials and Devices National Center for International Research on Photoelectric and Energy MaterialsSchool of Materials and EnergyYunnan UniversityKunming 650091China Sinopec Shanghai Research Institute of Petrochemical Technology Shanghai 201028China Key Laboratory for the Green Preparation and Application of Functional Materials Hubei Key Laboratory of Polymer MaterialsSchool of Materials Science and EngineeringHubei UniversityWuhan 430062China Key Laboratory of Flexible Electronics(KLOFE)&Institute of Advanced Materials(IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials(SICAM)Nanjing Tech University(NanjingTech)Nanjing 211800China Frontiers Science Center for Flexible Electronics MIIT Key Laboratory of Flexible Electronics(KLoFE)Northwestern Polytechnical UniversityXi'an 710072China

The performance of organic electrochemical transistors(OECTs)relies on the interaction between organic semiconductors and ***,hydrophilic ethylene glycol(EG)side chains are incorporated into organic semiconductors to improve the channel’s capacity to absorb ***,the EG substituted organic semiconductors tend to swell when immersed in aqueous electrolytes and exhibit microstructural changes induced by dopant *** our research,we introduce an alkyl spacer to create distance between the fullerene and EG *** approach is designed to reduce the negative effects of swelling and balance the ion and electron *** conducted an analysis of OECTs using four fullerene derivatives:no alkyl spacer,butyl,hexyl,and octyl *** OECTs based on fullerene derivatives with butyl and hexyl spacers exhibit enhanced transconductance(g_(m)=11.8 and 19.4 mS)compared to the ones without alkyl *** has also been observed that the butyl and hexyl spacers lead to a more than tenfold increase in volumetric *** increasing the alkyl spacer(octyl group)leads to no transistor *** study uncovers the relationship between alkyl spacers and the performance of OECTs based on fullerene *** will serve as a guideline for designing n-type small molecules for ***,we showcased the potential of utilizing OECTs based on these fullerene derivatives in cation sensing,which is promising for developing sweat sensors.

关键词： organic electrochemical transistors fullerene derivatives ethylene glycol side chains ion and electron conduction

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