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Non-hygroscopic ionogel-based humidity-insensitive iontronic sensor arrays for intra-articular pressure sensing

National science Review 2024年第11期11卷 183-193页

作者： Junli Shi Sai Xie Zhiguang Liu Minkun Cai Chuan Fei Guo Department of Materials Science and Engineering Southern University of Science and Technology Guangdong Provincial Key Laboratory of Functional Oxide Materials and Devices Southern University of Science and Technology

Implanted pressure sensors can provide pressure information to assess localized health conditions of specific tissues or organs, such as the intra-articular pressure within knee joints. However, the prerequisites for implanted sensors pose greater challenges than those for wearables or for robots: aside from biocompatibility and tissue-like softness, they must also exhibit humidity insensitivity and high-pressure resolution across a broad pressure spectrum. Iontronic sensors can provide superior sensing properties, but they undergo property degradation in wet environments due to the hygroscopic nature of their active component: ionogels. Herein, we introduce a humidity-insensitive iontronic sensor array based on a hydrophobic and tough ionogel polymerized in a hydrophobicity transition yielding two hydrophobic phases: a soft liquid-rich phase that enhances ionic conductivity and ductility, and a stiff polymer-rich phase that contributes to superior toughness. We demonstrate the in vivo implantation of these sensor arrays to monitor real-time intra-articular pressure distribution in a sheep model, while assessing knee flexion with an angular resolution of 0.1° and a pressure resolution of 0.1%. We anticipate that this sensor array will find applications in various orthopedic surgeries and implantable medical devices.

关键词： iontronic pressure sensor phase separation humidity-insensitive ionogel biocompatibility intra-articular pressure sensing

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Investigating thermal properties of 2D non-layered material using a NEMS-based 2-DOF approach towards ultrahigh-performance bolometer

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National science Review 2024年第10期11卷 194-202页

作者： Luming Wang Song Wu Zejuan Zhang Jiankai Zhu Luwei Zou Bo Xu Jiaqi Wu Junzhi Zhu Fei Xiao Chenyin Jiao Shenghai Pei Jiaze Qin Yu Zhou Juan Xia Zenghui Wang Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China School of Physics Hunan Key Laboratory of Nanophotonics and Devices Central South University State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China

Two-dimensional（2D） non-layered materials in many aspects differ from their layered counterparts, and the exploration of their physical properties has produced many intriguing findings. However, due to challenges in applying existing experimental techniques to such nanoscale samples, their thermal properties have remained largely uncharacterized, hindering further exploration and device application using this promising material system. Here, we demonstrate an experimental study of thermal conduction in β-In2S3,a typical non-layered 2D material, using a resonant nanoelectromechanical systems（NEMS） platform. We devise a new two-degrees-of-freedom technique, more responsive and sensitive than Raman spectroscopy,to simultaneously determine both the thermal conductivity to be 3.7 W m-1K-1and its interfacial thermal conductance with SiO2as 6.4 MW m-2K-1. Leveraging such unique thermal properties, we further demonstrate a record-high power-to-frequency responsivity of -447 ppm/μW in β-In2S3NEMS sensors,the best among drumhead NEMS-based bolometers. Our findings offer an effective approach for studying thermal properties and exploring potential thermal applications of 2D non-layered materials.

关键词： thermal properties non-layered material resonant NEMS nanoscale motion bolometer

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Nickel-based cathode in the rechargeable aqueous zinc ion batteries

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Progress in Natural science:Materials International 2025年第2期35卷 245-257页

作者： Lin Chen Tiancheng Tu Longyan Li School of Chemistry and Materials Science Jiangsu Key Laboratory of New Energy Devices & Interface Science Nanjing University of Information Science and Technology

In order to reduce reliance on fossil energy sources, there has been a focus on developing and utilizing the new renewable energy sources, leading to the gradual development of electrochemical energy storage systems. Among these systems, the rechargeable aqueous zinc ion battery has emerged as one of the most promising for commercialization in the next generation, receiving extensive research attention since its inception. A specific type within this category is the aqueous nickel-zinc battery, which utilizes a nickel-based electrode as the cathode and zinc as the anode, offering researchers a high capacity option. However, as research progresses, limitations of using solely nickel-based materials have become apparent, such as poor stability. To address these issue, various modification studies have been conducted, yielding some promising results. To provide a comprehensive overview of the design of cathode materials for aqueous zinc ion batteries, this review summarizes recent research and outlines the preparation method, modification techniques, and enhancement mechanisms of nickel-based materials.

关键词： Doping Electrochemical performance Modification Nickel-based material Zinc-ion battery

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Optimizing large optical contrast in Ge-Se-Te films via high-throughput method

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Progress in Natural science:Materials International 2025年第1期35卷 222-228页

作者： Qiqi Chen Guoxiang Wang Zijun Liu Yixiao Gao Chenjie Gu Tiefeng Xu Xiang Shen Yimin Chen Laboratory of Infrared Material and Devices & Key Laboratory of Photoelectric Materials and Devices of Zhejiang Province Advanced Technology Research InstituteNingbo University Department of Microelectronic Science and Engineering School of Physical Science and Technology Ningbo University Ningbo Solartrum Co.Ltd.

Chalcogenide phase-change materials（PCMs） have attracted great attentions due to their potential applications in reconfigurable photonic devices. The Ge2Sb2Te5and GeTe PCMs exhibit significant difference in refractive index（Δn） between amorphous and crystalline states, but they suffer from high optical loss. The binary Sb2S3and Sb2Se3PCMs, however, show low optical loss but small Δn. This encourages us to develop the novel materials,which are desired to combine large Δn and low optical loss. Instead of traditional trial-and-error screening method, we here used an efficient high-throughput method to optimize the PCMs' candidates for reconfigurable photonic devices in Ge-Se-Te chalcogenides. The crystallization temperature and difference in optical bandgap were detected, and then the component of Ge25Se7Te68, which also exhibits ultralow optical loss of 1.2 × 10-6（in amorphous state） and large Δn of 1.32 at 1550 nm, was optimized. This Te-rich Ge-Se-Te film can be a candidate for the applications of programmable reconfigurable photonic circuits.

关键词： Chalcogenide phase-change films High-throughput Reconfigurable photonics Refractive index

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On the Performance of Destructive Bond Strength Tests in Wedge Welding Stability 10th

On the Performance of Destructive Bond Strength Tests in Wed...

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10th International Conference on Mechanical, Automotive and Materials Engineering, CMAME 2023

作者： Zhou, Jingnan Wang, Ke Li, Jing Gao, Jiantou Sun, Peng Cai, Xiaowu Zhao, Fazhan Han, Zhengsheng Key Laboratory of Science and Technology on Silicon Devices Institute of Microelectronics Chinese Academy of Sciences Beijing China

ISBN: (纸本)9789819748051

Bond strength tests are the most widely accepted methods for controlling the quality of the wire bonding operation, and thereby offering added assurance that semiconductor devices will not fail in the field due to weak wire bonds. In this paper, three destructive bond strength tests are investigated in Au/Al and Al/Al bonding interface. Experiments demonstrate that wire bond shear test and wire pull test (single bond) can reflect the bonding state of the Au/Al interface more accurately than wire pull test (double bond). To obtain the most reliable data, combining wire bond shear test and its wedge bond lift offs records would be the best choice for Au/Al interface stability. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Semiconductor devices

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Topological magnetoelectric response in ferromagnetic axion insulators

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National science Review 2024年第2期11卷 8-14页

作者： Yuhao Wan Jiayu Li Qihang Liu Department of Physics and Shenzhen Institute for Quantum Science and Engineering(SIQSE) Southern University of Science and Technology Shenzhen Key Laboratory of Advanced Quantum Functional Materials and Devices Southern University of Science and Technology Guangdong Provincial Key Laboratory for Computational Science and Material Design Southern University of Science and Technology

The topological magnetoelectric effect （TME） is a hallmark response of the topological field theory,which provides a paradigm shift in the study of emergent topological ***,its direct observation is yet to be realized due to the demanding magnetic configuration required to gap all surface ***,we theoretically propose that axion insulators with a simple ferromagnetic configuration,such as the MnBi2Te4/（Bi2Te3）nfamily,provide an ideal playground to realize the *** the designed triangular prism geometry,all the surface states are magnetically *** a vertical electric field,the surface Hall currents give rise to a nearly half-quantized orbital moment,accompanied by a gapless chiral hinge mode circulating in ***,the orbital magnetization from the two topological origins can be easily distinguished by reversing the electric *** work paves the way for direct observation of the TME in realistic axion-insulator materials.

关键词： topological magnetoelectric effect axion insulator magnetic topological materials

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High-voltage solid-sate electrolytes for advanced lithium-ion batteries

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Journal of Energy Chemistry 2025年第6期105卷 713-731页

作者： Zhijun Wu Hao Tian Dali Ji Xin Zhang Lanxun Li Zichen Lou Wenping Sun Mingxia Gao Yongfeng Liu Hongge Pan Institute of Science and Technology for New Energy Xi'an Technological University Zhejiang Key Laboratory of Advanced Solid State Energy Storage Technology and Applications Taizhou Institute of Zhejiang University State Key Laboratory of Silicon Materials and School of Materials Science and Engineering Zhejiang University

Solid-state batteries(SSBs) are highly attractive on account of their high energy density and good *** high-voltage and high-current conditions,however,the interface reactions,structural changes,and decomposition of the electrolyte impede the transmission of lithium ions in all-solid-state lithium batteries(ASSLBs),significantly reducing the charging and discharging capacity and cycling stability of the battery and therefore restricting its practical *** main content of review is to conduct an in-depth analysis of the existing problems of solid-state batteries from the aspects of interface reactions,material failure,ion migration,and dendrite growth,and points out the main factors influencing the electrochemical performance of ***,the compatibility and ion conduction mechanisms between polymer electrolytes,inorganic solid electrolytes,and composite electrolytes and the electrode materials are ***,the perspectives of electrode materials,electrolyte properties,and interface modification are summarized and prospected,providing new optimization directions for the future commercialization of high-voltage solid-state electrolytes.

关键词： All-solid-state batteries High-voltage electrolytes Interface compatibility Ionic conduction Solid-state electrolytes

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Tungsten-based Li-rich rock salt stabilized Co-free Ni-rich layered oxide cathodes

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稀有金属（英文版） 2025年第2期44卷 901-911页

作者： Bing-Chen Li Mei Wang Bing-Yuan Han Yuan-Xia Zhang Da-Jian Wang Jing-Jing Chen Zhi-Yong Mao Chen-Long Dong Tianjin Key Laboratory for Photoelectric Materials and Devices School of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China Tianjin Key Laboratory of Quantum Optics and Intelligent Photonics School of ScienceTianjin University of TechnologyTianjin 300384China

Dual-element-doped Co-free Ni-rich LiNiO2-based cathodes demonstrate great potential for high-energy lithium-ion batteries(LIBs).Nevertheless,they suffer from serious Li+/Ni2+mixing,irreversible phase transitions,structural degradation and side reactions at the cath-ode/electrolyte ***,W is purposively intro-duced into LiNi0.9Mn0.05Ti0.025Al0.025O2 to engineer rock-salt Li4+xNi1-xWO6 stabilized LiNi0.9Mn0.035-Ti0.025Al0.025W0.015O2(LNMTAWO)*** situ characterizations,together with electrochemical analysis,demonstrate that Mn,Ti and Al can effectively enhance the reversibility of phase transitions,stabilize the TM-O bonds under high voltage and relieve voltage *** rock-salt Li4+xNi1_xWO6 can prevent the overgrowth of grain size,avoid the exposure of active materials into electrolytes and decrease the side *** from the dual-ele-ment synergistic effects,the LNMTAWO cathode offers high reversible capacities of 228.7 and 150.8 mAh·g-1 at 0.2C and 5C,respectively,and contributes a high reversible capacity of 171.4 mAh·g-1 at 0.5C after 200 cycles(voltage delay:5 mV)and 88.4 mAh·g-1at 10C after 500 *** design of rock-salt structure symbiotically grown on Ni-rich cathodes by introducing high-valence elements would provide rational guidelines on engineering high-energy Co-free Ni-rich LIB cathodes.

关键词： Lithium-ion battery Ni-rich cathodes Phase transition Rock salt Symbiotic structure

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Constructing a 3D multichannel structure to enhance performance of Ni–Co–Mn hydroxide electrodes for flexible supercapacitors

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Rare Metals 2024年第1期43卷 148-163页

作者： Zhi-Hui Xu Shi-Shuai Sun Xue-Lei Li Zhi-Hui Zhang Hai-Ying Li Shuang-Ting Ruan Shou-Gen Yin Key Laboratory of Display Materials and Photoelectric Devices(Ministry of Education)and Tianjin Key Laboratory for Photoelectric Materials and Devices School of Materials Science and EngineeringTianjin University of TechnologyTianjin 300384China College of Science Tianjin University of TechnologyTianjin 300384China School of Materials Science and Engineering Inner Mongolia University of TechnologyHohhot 010051China

The balancing of the electrochemical performance,mechanical stability,and processing technology for applying supercapacitors to flexible and wearable electronics continues to encounter severe ***,we prepare Ni-Co-Mn hydroxide electrodes with a threedimensional multichannel structure via a simple hydrothermal *** are constructed using vertically contiguous nano sheets with a uniform thickness and rough *** electrodes can provide numerous electroactive sites and accelerate the transmission of electrolyte *** relationship between the structure and electrochemical performances is verified by experiments and theoretical ***-dimensional(2D)planar and one-dimensional(1D)fiber electrodes are prepared using a flexible carbon cloth(CC)and carbon fiber(CF),respectively,as *** assembled quasi-solid-state flexible asymmetric supercapacitor(FASC)with a twodimensional sandwich structure using NiCoMn-OH/CC as the electrode achieves a remarkable energy density of73.8 Wh·kg^(-1)at a power density of 1.03 kW·kg^(-1).The quasi-solid-state FASC with a 1D linear structure using NiCoMn-OH/CF as the electrode also attains a high energy density(12.9 Wh·kg^(-1)at a power density of0.75 W·kg^(-1)).Moreover,the electrochemical performances of the NiCoMn/CC//AC/CC and NiCoMn/CF//AC/CF FASCs are not disturbed at different bending angles(0°,45°,90°,135°and 180°),This indicates the superior flexibility of the *** also assemble a self-powered energy-harvesting storage system by integrating FASCs and commercial solar cells to verify its *** displays sustainable development potential for energy storage.

关键词： Supercapacitors Flexible Ni–Co–Mn hydroxide 3D multichannel structure High performances

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In vivo whole brain photoacoustic microscopy through a transparent ultrasound transducer

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Chinese Optics Letters 2025年第2期23卷 38-43页

作者： Chen Liang Junwei Wu Hangbing Peng Ljun Deng Yiqin Lin Zhongwen Cheng Luming Zeng Xuanrong Ji Jiangxi Provincial Key Laboratory of Advanced Electronic Materials and Devices Jiangxi Science and Technology Normal University Nanchang 33038China State Key Laboratory of Precision Electronics Manufacturing Technology and Equipment Guangdong University of TechnologyGuangzhou 510006China

Brain imaging techniques provide in vivo insight into structural and functional phenotypes that are physiologically and clinically ***,most existing brain imaging techniques suffer from balancing trade-offs among the temporal and spatial resolutions as well as the field of view(FOV).Here,we proposed a high-resolution photoacoustic microscopy(PAM)system based on a transparent ultrasound transducer(TUT).The system not only retains the advantage of the fast imaging speed of pure optical scanning but also has an imaging FOV of up to 20 mm×20 mm,which can easily enable rapid imaging of the whole mouse brain in *** on experimental validation of brain injury,glioma,and cerebral hemorrhage in mice,the system has the capability to visualize the vascular structure and hemodynamic changes in the cerebral ***-based PAM provides an important research tool for rapid multi-parametric brain imaging in small animals,providing a solid foundation for the study of brain diseases.

关键词： photoacoustic microscopy transparent ultrasound transducer whole brain imaging.

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