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Synthesis of core–shell SiO2/polymer composite microspheres by miniemulsion polymerization and damping performance characteristics of formed thin film

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Discover Polymers 2025年第1期2卷 1-13页

作者： Cheng, Guanzhi Xing, An Xu, Tailin Guan, Wenxun Wang, Xi Xie, Yongjiang State Key Laboratory of High-Speed Railway Track System Beijing China Railway Engineering Research Institute China Academy of Railway Sciences Co. Ltd. Beijing China Research Center for Bioengineering and Sensing Technology University of Science and Technology Beijing Beijing China Institute for Advanced Study Shenzhen University Guangdong China

This study focuses on the synthesis of SiO2/polymer composite microspheres with core–shell structure via miniemulsion polymerization using styrene (St) and butyl acrylate (BA) as monomers, and encapsulating SiO2 nanoparticles during the processes. The resulting composite emulsion and its formed latex thin film were characterized by FT-IR, DLS, DSC, and DMA techniques to investigate the effects of emulsifier concentration, nanoparticle content, and monomer ratio on microsphere morphology and properties. TEM results showed a clear core–shell structure for SiO2/polymer composite microspheres under optimal conditions with an emulsifier (SDS) concentration of 30 mM, a SiO2 content of 5wt%, and a St:BA monomer ratio of 1:1. The maximum loss factor and damping peak area were found to be at their highest levels under these conditions, indicating potential for the composite material as a high-performance damping material due to its excellent mechanical properties and thermal stability.

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Cochlear implant/MXene-based electroacoustic stimulation modulates the growth and maturation of spiral ganglion neurons

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Engineered Regeneration 2024年第4期5卷 443-451页

作者： Yangnan Hu Hao Wei Menghui Liao Shanying Han Xin Gao Yusong Wang Shan Zhou Dongyu Xu Xugang Zhuang Ye Yang Hong Cheng Bin Zhang Qingyue Cui Jieyu Qi Lei Tian Wenyan Li Xia Gao Renjie Chai State Key Laboratory of Digital Medical Engineering Department of Otolaryngology Head and Neck SurgeryZhongda HospitalSchool of Life Sciences and TechnologyAdvanced Institute for Life and HealthJiangsu Province High-Tech Key Laboratory for Bio-Medical ResearchSoutheast UniversityNanjing210096China Co-Innovation Center of Neuroregeneration Nantong UniversityNantong 226001China Department of Otolaryngology Head and Neck Surgery Nanjing Drum Tower HospitalAffiliated Hospital of Medical SchoolNanjing UniversityJiangsu Provincial Key Medical Discipline(Laboratory)Nanjing 210008China Department of Otolaryngology Head and Neck Surgery Sichuan Provincial People’s HospitalUniversity of Electronic Science and Technology of ChinaChengdu 610072China Department of Otolaryngology-Head and Neck Surgery Shandong Provincial ENT HospitalShandong UniversityJinanShandongChina State Key Laboratory of Digital Medical Engineering Department of Otolaryngology Head and Neck SurgeryZhongda HospitalSchool of MedicineAdvanced Institute for Life and HealthSoutheast UniversityNanjing210096China ENT institute and Department of Otorhinolaryngology Eye&ENT HospitalState Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain ScienceFudan UniversityShanghai200031China Department of Neurology Aerospace Center HospitalSchool of Life ScienceBeijing Institute of TechnologyBeijing 100081China Institute for Stem Cell and Regeneration Chinese Academy of ScienceBeijingChina Southeast University Shenzhen Research Institute Shenzhen 518063China

Cochlear implantation(CI)offers a dependable treatment for sensorineural hearing loss,with precision electroa-coustic stimulation parameters showing great potential in improving auditory outcomes in CI ***,we report the attachment of MXene into CI systems which effectively mimic the neural electrode interface due to MXene’s excellent electrical conductivity and ***-frequency short-term biphasic electrical pulses emitted by the MXenes-based CI promoted the outgrowth of spiral ganglion neuron(SGN)neurites and growth cones,substantially boosting the calcium activity in *** study lays a theoretical foundation for the precision medicine approaches in CI patient care,and informs the selection of materials for cochlear implant electrode materials in the future.

关键词： Cochlear implant MXene Electroacoustic stimulation Cellular response

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Enhancing electrochemical performance and stabilizing zinc anode in mild acidic electrolyte using combined additive

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Materials science for Energy Technologies 2023年第1期6卷 178-191页

作者： Motlagh, Shiva Rezaei Khezri, Ramin Mohamad, Ahmad Azmin Pornprasertsuk, Rojana Kidkhunthod, Pinit Nguyen, Mai Thanh Yonezawa, Tetsu Kheawhom, Soorathep Department of Chemical Engineering Faculty of Engineering Chulalongkorn University Bangkok10330 Thailand School of Materials and Mineral Resources Engineering Universiti Sains Malaysia Nibong Tebal Pulau Pinang 14300 Malaysia Department of Materials Science Faculty of Science Chulalongkorn University Bangkok10330 Thailand Center of Excellence on Advanced Materials for Energy Storage Chulalongkorn University Bangkok10330 Thailand Center of Excellence in Petrochemical and Materials Technology Chulalongkorn University Bangkok10330 Thailand Department of Materials Science and Bioengineering Nagaoka University of Technology Niigata940-2188 Japan Synchrotron Light Research Institute 111 University Avenue Muang District Nakhon Ratchasima30000 Thailand Division of Materials Science and Engineering Faculty of Engineering Hokkaido University Hokkaido060-8628 Japan Faculty of Engineering Chulalongkorn University Bangkok10330 Thailand

Rechargeable zinc-based batteries having aqueous electrolytes are renowned as promising alternatives for large scale energy storage systems (ESSs). However, in mild acidic electrolytes, zinc anodes pose several issues that have yet to be overcome. For tackling the major difficulties of zinc anodes, electrolyte engineering is the most practical and cost-effective strategy. Notwithstanding the broad variety of mechanisms associated with different electrolyte additives, the function of a single additive is straightforward. Finding combined additives with broader functionalities and greater efficacy is crucial. In this work, the combination of ionic liquid (IL) 1-butyl-1-methylpyrrolidinium dicyanamide ([BMPY][DCN]) and ethylene glycol (EG) as additives in an aqueous electrolyte 3 M ZnSO4 proves to be an effective strategy for simultaneously enhancing both zinc dissolution and deposition. IL significantly enhances zinc (Zn) dissolution and deposition while EG plays an important role in suppressing hydrogen evolution reaction (HER)and corrosion. Thus, 13.50 % improvement in capacity is achieved by the mixed additive EG + IL/ZnSO4 compared with the 3 M ZnSO4 electrolyte. In the Zn//Zn symmetrical system at 2 mA cm−2, the mixed additive greatly augments the cyclability of zinc, reaching over 400 h while maintaining excellent coulombic efficiency (CE). In-situ XAS and FT-EXAFS analyses confirm the high activities of both zinc oxidation/reduction in the mixed additive electrolyte. Results demonstrate that EG + IL/ZnSO4 can be applied to increase the cyclability of aqueous zinc-based batteries while sustaining high performance. © 2022

关键词： Ethylene glycol

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Substantial transition to clean household energy mix in rural China

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National science Review 2022年第7期9卷 137-151页

作者： Guofeng Shen Rui Xiong Yanlin Tian Zhihan Luo Bahabaike Jiangtulu Wenjun Meng Wei Du Jing Meng Yuanchen Chen Bing Xue Bin Wang Yonghong Duan Jia Duo Fenggui Fan Lei Huang Tianzhen Ju Fenggui Liu Shunxin Li Xianli Liu Yungui Li Mu Wang Ying Nan Bo Pan Yanfang Pan Lizhi Wang Eddy Zeng Chao Zhan Yilin Chen Huizhong Shen Hefa Cheng Shu Tao College of Urban and Environmental Sciences Peking University Collaborative Innovation Center of Atmospheric Environment and Equipment Technology Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control (AEMPC)Nanjing University of Information Science and Technology Institute of Reproductive and Child Health Peking University Laboratory of Geographic Information Science School of Geographic Sciences East China Normal University The Bartlett School of Sustainable Construction University College London College of Environment Zhejiang University of Technology Institute of Applied Ecology Chinese Academy of Sciences Department of Epidemiology and Biostatistics School of Public Health Peking University College of Resources and Environment Shanxi Agricultural University Xinjiang Key Laboratory of Environmental Pollution and Bioremediation Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences National Engineering Technology Research Center for Desert-Oasis Ecological Construction Xinjiang Institute of Ecology and Geography Chinese Academy of Sciences University of Chinese Academy of Sciences School of Geography and Tourism Anhui University School of Environment Nanjing University College of Geography and Environmental Science Northwest Normal University College of Geographical Science Qinghai Normal University Academy of Plateau Science and Sustainability College of Chemistry Chemical Engineering and Environment Minnan Normal University School of Environmental Science and Engineering Hubei Polytechnic University Department of Environmental Engineering Southwest University of Science and Technology College of Food Science Tibet Agricultural and Animal Husbandry University College of Geography and Ocean Sciences Yanbian University Faculty of Environmental Science and Engineering Kunming University of Science and Technology College of Geography and Environmental Science Henan University College of Ecology and Environment Hainan University School of Environment Ji

The household energy mix has significant impacts on human health and climate,as it contributes greatly to many health-and climate-relevant air *** to the well-established urban energy statistical system,the rural hous ehold energy statistical system is incomplete and is often associated with high *** a nationwide investigation,this study reve aled high contributions to energy supply from coal and biomass fuels in the rural household energy sector,while electricity comprised ～20%.Stacking(the use of multiple sources of energy) is significant,and the average number of energy types was 2.8 per *** to 2012,the consumption of biomass and coals in 2017 decreased by 45% and 12%,respectively,while the gas consumption amount increased by 204%.Increased gas and decreased coal consumptions were mainly in cooking,while decreased biomass was in both cooking(41%) and heating(59%).The time-sharing fraction of electricity and gases(E&G) for daily cooking grew,reaching 69% in 2017,but for space heating,traditional solid fuels were still dominant,with the national average shared fraction of E&G being only 20%.The non-uniform spatial distribution and the non-linear increase in the fraction of E&G indicated challenges to achieving universal access to modern cooking energy by 2030,particularly in less-developed rural and mountainous *** some non-typical heating zones,the increased share of E&G for heating was significant and largely driven by income growth,but in typical heating zones,the time-sharing fraction was <5 % and was not significantly increased,except in areas with policy *** intervention policy not only led to dramatic increases in the clean energy fraction for heating but also accelerated the clean cooking *** income,higher education,younger age,less energy/stove stacking and smaller family size positively impacted the clean energy transition.

关键词： household energy mix energy transition clean heating modern energy sustainable development

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Revealing structure correlation between ionic liquid and metal-organic framework matrix

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Magnetic Resonance Letters 2024年第2期4卷 65-72页

作者： Ligang Xu Wenda Zhang Chenjie Lou Chenxu Geng Yuxiu Sun Jie Liu Yongchao Shi Huajie Luo Jipeng Fu Haiyan Zheng Mingxue Tang Center for High Pressure Science and Technology Advanced Research Beijing100193China College of Materials Science and Engineering Guilin University of TechnologyGuilin541004China State Key Laboratory of Separation Membranes and Membrane Processes School of Material Science and EngineeringTiangong UniversityTianjin300387China University of Science and Technology Beijing Beijing100083China Key Laboratory of Rare Earth Optoelectronic Materials and Devices of Zhejiang Province Institute of Optoelectronic Materials and DevicesChina Jiliang UniversityHangzhou310018China

Solid-state batteries are rising rapidly in response to the fast-increasing energy ***-organic framework(MOF) loaded with ionic liquids has brought new opportunities for solid-state batteries owing to its good interfacial compatibility and high ionic conductivity. MOF-808 is selected to be filled with Li-contained ionic liquid for structure and ion dynamics investigation using nuclear magnetic resonance(NMR) and X-ray *** study finds that the introduced ionic liquid would partially soften the matrix of MOF-808 and thus yield amorphous phase. By selective isotope replacement under cycling symmetric ^(6)Li metal cell, Li^(+)ion is observed to mainly go cross ionic liquid in the open channel of matrix under potential polarization.

关键词： Nuclear magnetic resonance Solid-state batteries MOF-808 Ionic liquid Local structure

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Fabrication of periodic gallium droplets by in-situ laser interference based on MBE 10

Fabrication of periodic gallium droplets by in-situ laser in...

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10th Symposium on Novel Optoelectronic Detection technology and Applications

作者： Ren, Maoyun Geng, Biao Cheng, Lingsu Guo, Yu Peng, Chunbo Shi, Zhenwu Peng, Changsi School of Optoelectronic Science and Engineering Collaborative Innovation Center of Suzhou Nano Science and Technology Soochow University Suzhou215006 China Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province Key Lab of Modern Optical Technologies of Education Ministry of China Soochow University Suzhou215006 China Institute of Research for Applicable Computing University of Bedfordshire Park Square LutonLU1 3JU United Kingdom

ISBN: (数字)9781510688155

ISBN: (纸本)9781510688148

In this work, the GaAs substrate was in-situ irradiated by a single-pulse of two-beam laser interference at a low temperature of 40℃. We studied the irradiated surface morphology evolution with the different pulse energies of 20mJ, 40mJ, 50mJ, 60mJ, 80mJ and 100mJ which are corresponding to sample A-F. For Sample A, the irradiation yield of Ga atoms is too limited to form metallic droplets but films with a period of about 310nm due to the low pulse energy. For Sample B, periodic bands of Ga droplets appear on the bright regions while the surface on the dark regions remains very smooth. The droplet density, average width and height are 7.5×1010/cm2, 25nm and 5.1nm. For sample C to E, as the energy rises, the average width/height of Ga droplets rise from 33nm/5.9nm, 36.7nm/8.7nm to 52.1nm/15.7nm but with the decreased density from 5.8×1010/cm2, 4×1010/cm2 to 1.7×1010/cm2. Moreover, some small Ga droplets also appear in the dark regions. Finally for sample F, when the energy becomes enough high, both the dark and bright regions generate Ga droplets of a similar size and density which is equivalent to the random growth. The resulting density is 7.4×109/cm2 and the average width/height is 63.6nm/20.2nm. Obviously, our work has provided a novel approach for fabricating periodic Ga droplets directly in MBE systems with the advantages of low-cost, high-efficiency and strong controllability which must be able to find great application prospects in droplet epitaxy of all kinds of semiconductor devices based on periodic arrays of quantum structures. © 2025 SPIE.

关键词： Molecular beam epitaxy

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Theoretical Study of Tuning the Band Structure and Photoelectric Properties of Two-Dimensional Ruddlesden-Popper Bilayer Perovskite Cs3sn2- Y Pb Y X7 (X=Cl, Br, and I)

SSRN

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SSRN 2023年

作者： Zhang, Hanmiao Huang, Wenqi Zhou, Zihang Jia, Mengjiang Zhang, Chunqian Zuo, Yuhua Beijing Advanced Innovation Center for Materials Genome Engineering Beijing Information Science and Technology University Beijing100101 China School of Applied Science Beijing Information Science and Technology University Beijing100101 China State Key Laboratory on Integrated Optoelectronics Institute of Semiconductors Beijing100083 China Beijing Advanced Innovation Center for Materials Genome Engineering China

All-inorganic two-dimensional Ruddlesden-Popper halide perovskites have garnered considerable interest in the development of photodetectors because of their remarkable thermal stability and photoelectric characteristics. Nevertheless, the widely investigated compounds (Cs2PbI2Cl2, etc) possess a constant band gap, which restricts their potential for applications. Here, the first-principles method based on density functional theory is used to investigate the lattice, band structure, effective mass and optical properties of two-dimensional Ruddlesden-Popper bilayer perovskite Cs3Sn2-yPbyX7(X=Cl,Br,and I) under varying Pb concentrations y, halogen atoms X, and layer spacings d. The findings demonstrate their band gap, effective mass, and optical characteristics may be efficiently tuned by modifying y and X. y predominantly affects the absorption coefficient of visible light, X affects both visible and ultraviolet light. d slightly affects band gap but significantly affects the band shape. By analyzing their density of states, the physical mechanisms that the band structure changes with y, X and d are elucidated. © 2023, The Authors. All rights reserved.

关键词： Energy gap

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Simple and rapid conversion of silicon carbide to nanodiamonds at ambient pressure

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Journal of Materials science & technology 2021年第35期94卷 230-238页

作者： Cheng Yang Bingqiang Wei Kejian He Ping Xu Xiangmin Xie Kai Tong Chen Zeng Yafeng Wang Xiaodong Wang Jinping Liu Mingyu Zhang Zhe'an Su Qizhong Huang State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083China Advanced Research Center.Central South University Changsha 410083China Hunan Changyu Science and Technology Development Co. Ltd.Changsha 410600China

Nanodiamonds(NDs)were prepared under ambient pressure by sublimation decomposition of silicon carbide in an intermediate frequency furnace for only 8 *** synthesis proceeded in the temperature range of 2600-2800℃ without any catalyst or highly active gas components(such as H2,alkane,and halogen).The conversion began at 2600℃ and produced NDs with particle sizes in the range of 1-5 nm with a uniform particle shape and excellent *** linear reaction kinetics allowed for rapid transformation to any depth with reasonable control of the *** linear rate constant(K_(l))for the reaction at 2800℃ was 37.5 mm/h,which is 31.2 times that of the reaction at 2600℃.The Si C sublimation decomposition produced carbon atoms that filled the Si C lattice vacancies or were combined with the suspended carbon chain bonds to form sp3 carbon,while the diffusion of amorphous carbon atoms promoted nucleation and growth of ***-resolution transmission electron microscopy analysis indicated that the NDs were separated from the Si C matrix by break-off due to propagation of the reaction *** Si C sublimation decomposition method is considered simple,fast,environmentally friendly and promising for industrial-scale production.

关键词： n-diamond SiC Nanodiamond Sublimation decomposition

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Horn-array haloscope for volume-efficient broadband axion searches

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Physical Review D 2023年第5期108卷 L051101-L051101页

作者： Junu Jeong Sungwoo Youn Yannis K. Semertzidis Center for Axion and Precision Physics Research (CAPP) Institute for Basic Science (IBS) Daejeon 34051 Republic of Korea Department of Physics Korea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Republic of Korea

The invisible axion is a hypothetical particle that arises from the Peccei-Quinn mechanism proposed to resolve the CP problem in quantum chromodynamics, and is considered one of the most favored candidates for cold dark matter. Dish antennas can provide a useful scheme for sensitive searches for dark matter axions. The conversion power through axion-photon couplings is proportional to the surface area of the metal plate, rather than the volume of the available magnetic field. To maximize the effect, we propose an advanced concept of haloscope that involves an array of horn antennas to increase the axion-induced photons and a reflector to focus them onto a photo sensor. Compared with other proposed schemes, this configuration can significantly improve the experimental sensitivity, especially in the terahertz region.

关键词： Dark matter Axions Dark matter detectors

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用于实时皮肤创面愈合的超强工程化蛋白凝聚体黏合剂

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Engineering 2023年第12期31卷 76-85页

作者： Ming Li Baimei Liu Wei Xu Lai Zhao Zili Wang Haonan He Jingjing Li Fan Wang Chao Ma Kai Liu Hongjie Zhang State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026China Department of Orthopedics Tongren HospitalShanghai Jiao Tong University School of MedicineShanghai 200336China Engineering Research Center of Advanced Rare Earth Materials Department of ChemistryTsinghua UniversityBeijing 100084China Xiangfu Laboratory Jiaxing 314102China

Adhesives have attracted a great deal of attention as an advanced modality in biomedical engineering because of their unique wound management ***,it is a grand challenge for current adhesive systems to achieve robust adhesion due to their tenuous interfacial bonding ***,the absence of dynamic adaptability in conventional chemical adhesives restricts neoblasts around the wound from migrating to the site,resulting in an inferior tissue-regeneration ***,an extracellular matrix-derived biocomposite adhesive with robust adhesion and a real-time skin healing effect is ***–liquid phase separation is well-harnessed to drive the assembly of the biocomposite adhesive,with the active involvement of supramolecular interactions between chimeric protein and natural DNA,leading to a robustly reinforced adhesion *** bioadhesive exhibits outstanding adhesion and sealing behaviors,with a sheared adhesion strength of approximately 18 MPa,outperforming its reported ***,the engineered bioderived components endow this adhesive material with biocompatibility and exceptional biological functions including the promotion of cell proliferation and migration,such that the use of this material eventually yields real-time in situ skin *** work opens up novel avenues for functionalized bioadhesive engineering and biomedical translations.

关键词： Biocomposite adhesive Protein DNA Coacervates Skin healing

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