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CLEO: Fundamental science, CLEO:FS 2024 - Part of Conference on Lasers and Electro-Optics, CLEO 2024

作者： Luo, Jiaming Lin, Tong Zhang, Junjie Chen, Xiaotong Blackert, Elizabeth R. Xu, Rui Yakobson, Boris I. Zhu, Hanyu Department of Materials Science and Nano Engineering Rice University Houston United States Applied Physics Graduate Program Rice University Houston United States

We report that circularly polarized terahertz light pulses can drive chiral phonons, which then induce an effective quasi-static magnetic field on the order of 1 tesla to polarize the paramagnetic cerium fluoride. ... 详细信息

ISBN: (纸本)9781957171395

关键词： Phonons

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Ultrafast dynamics of chiral phonons in tungsten disulfide

Ultrafast dynamics of chiral phonons in tungsten disulfide

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CLEO: Fundamental science, CLEO:FS 2024 - Part of Conference on Lasers and Electro-Optics, CLEO 2024

作者： Lin, Tong Chen, Xiaotong Xu, Rui Luo, Jiaming Zhu, Hanyu Department of Materials Science and Nano Engineering Rice University Houston United States Applied Physics Graduate Program Rice University Houston United States

Linearly and circularly polarized phonons in monolayer WS2 are directly excited by resonant infrared pulses. The dynamics of coherent and incoherent chiral phonons are measured by time-resolved Raman spectroscopy and ... 详细信息

ISBN: (纸本)9781957171395

关键词： Time-resolved spectroscopy

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Hydrogel for light delivery in biomedical applications

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Bioactive materials 2024年第7期37卷 407-423页

作者： Pek Yin Michelle Yew Pei Lin Chee Qianyu Lin Cally Owh Jiayi Li Qing Qing Dou Xian Jun Loh Dan Kai Yong Zhang Institute of Sustainability for Chemicals Energy and Environment(ISCE2)Agency for ScienceTechnology and Research(A*STAR)1 Pesek Road627833Singapore Department of Biomedical Engineering Faculty of EngineeringNational University of SingaporeSingapore117583Singapore Institute of Materials Research and Engineering(IMRE) Agency for ScienceTechnology and Research(A*STAR)2 Fusionopolis WayInnovis#08-03Singapore138634Singapore School of Biological Sciences Nanyang Technological University60 Nanyang DriveSingapore637551Singapore School of Environmental and Chemical Engineering Shanghai UniversityShanghai200444China School of Chemistry Chemical Engineering and BiotechnologyNanyang Technological University21 Nanyang LinkSingapore637371Singapore Department of Biomedical Engineering City University of Hong Kong83 Tat Chee AvenueKowloonHong Kong SARChina

Traditional optical waveguides or mediums are often silica-based materials,but their applications in biomedicine and healthcare are limited due to the poor biocompatibility and unsuitable mechanical *** term of the applications in human body,a biocompatible hydrogel system with excellent optical transparency and mechanical flexibility could be *** this review,we explore the different designs of hydrogel-based optical waveguides derived from natural and synthetic *** highlighted key developments such as light emitting contact lenses,implantable optical fibres,biosensing systems,luminating and fluorescent ***,we expand further on the challenges and perspectives for hydrogel waveguides to achieve clinical applications.

关键词： Optical fibres Transparent hydrogels Flexibility Biocompatibility Photodynamic therapy

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Concentrated ternary ether electrolyte allows for stable cycling of a lithium metal battery with commercial mass loading high-nickel NMC and thin anodes

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Carbon Energy 2023年第3期5卷 2-18页

作者： Jun Yang Xing Li Ke Qu Yixian Wang Kangqi Shen Changhuan Jiang Bo Yu Pan Luo Zhuangzhi Li Mingyang Chen Bingshu Guo Mingshan Wang Junchen Chen Zhiyuan Ma Yun Huang Zhenzhong Yang Pengcheng Liu Rong Huang Xiaodi Ren David Mitlin School of New Energy and Materials Southwest Petroleum UniversityChengduChina Energy Storage Research Institute Southwest Petroleum UniversityChengduChina Shenzhen Key Laboratory of Nanobiomechanics Shenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhenChina China Key Laboratory of Polar Materials and Devices(MOE) Department of ElectronicsEast China Normal UniversityShanghaiChina Materials Science Program and Texas Materials Institute The University of Texas at AustinAustinTexasUSA Beijing Computational Science Research Center BeijingChina School of Materials Science and Engineering Center for Green Innovation University of Science and Technology BeijingBeijingChina Department of Materials Science and Engineering Hefei National Research Center for Physical Sciences at the MicroscaleUniversity of Science and Technology of ChinaHefeiAnhuiChina

A new concentrated ternary salt ether-based electrolyte enables stable cycling of lithium metal battery(LMB)cells with high-mass-loading(13.8 mg cm^(−2),2.5 mAh cm^(−2))NMC622(LiNi_(0.6)Co_(0.2)Mn_(0.2)O_(2))cathodes and 50μm Li ***“CETHER-3,”this electrolyte is based on LiTFSI,LiDFOB,and LiBF4 with 5 vol%fluorinated ethylene carbonate in 1,***-cial carbonate and state-of-the-art binary salt ether electrolytes were also tested as *** CETHER-3,the electrochemical performance of the full-cell battery is among the most favorably reported in terms of high-voltage cycling *** example,LiNi_(x)Mn_(y)Co_(1-x-y)O_(2)(NMC)-Li metal cells retain 80%capacity at 430 cycles with a 4.4 V cut-off and 83%capacity at 100 cycles with a 4.5 V cut-off(charge at C/5,discharge at C/2).According to simulation by density functional theory and molecular dynamics,this favorable performance is an outcome of enhanced coordination between Li^(+)and the solvent/salt *** advanced microscopy(high-resolution transmission electron microscopy,scanning electron microscopy)and surface science(X-ray photoelectron spectroscopy,time-of-fight secondary ion mass spectroscopy,Fourier-transform infrared spectroscopy,Raman spectroscopy),it is demonstrated that a thinner and more stable cathode electrolyte interphase(CEI)and solid electrolyte interphase(SEI)are *** CEI is rich in lithium sulfide(Li_(2)SO_(3)),while the SEI is rich in Li_(3)N and *** cycling,the CEI/SEI suppresses both the deleterious transformation of the cathode R-3m layered near-surface structure into disordered rock salt and the growth of lithium metal dendrites.

关键词： concentrated electrolyte density functional theory ether electrolyte high‐nickel cathode high‐voltage battery molecular dynamics

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Design and development of an integrated enset processing machine suitable for central highland farmers of west shewa zone Ethiopia

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Discover Agriculture 2025年第1期3卷 1-26页

作者： Jima, Beka Adugna Kolhe, Kishor Purushottam Jiru, Moera Gutu Agricultural Machinery Engineering Program Department of Mechanical Engineering School of Mechanical Chemical and Materials Engineering at Adama Science and Technology University Adama Ethiopia Department of Mechanical Engineering School of Mechanical Chemical and Materials Engineering at Adama Science and Technology University Adama Ethiopia

The development of Integrated Enset processing technology is significant for the easy availability of stable food in the current condition for fulfilling the pangs of hunger in Ethiopia, currently; individual manual technologies such as decortication, corm granting, bulla extraction, and fermenting techniques eventually contribute to utilizing food security such as Kocho, which is not affordable for the marginal farmers of Ethiopia. However, there is a lack of integrated compromise of the all-function process of corm granting, decortication, and pulverization in one machine wholesome of the product such as Kocho, and bulla within consuming time and labor. Therefore, it is decided to design and develop an integrated enset processing machine for central high land of Ethiopian farmers with high-quality production. The physical and mechanical properties of the enset is studied to get an efficient and robust design of the various components. The overall design and development of proposed machine components were carried out at Adama science and Technology University, Ethiopia by using ANSYS 2023 R1 software by considering the engineering economics and material specifications as per ASTM standards. The process parameters of the proposed machine are identified as feed rate, drum speed, concave to drum clearance, power requirement, etc. Also, the enset characteristics were considered as decorticating and granting, fiber cutting resistance, fiber length, dimension, shape, and weight. The overall developed enset integrated machine assembles are analyzed for granting and decorticating with drum clearance and bulla extraction throughput capacity, reliability, simplicity, safety, and overall cost. The machine's safety from a Design Perspective is checked and validated by a simulation study on the critical parts subjected to higher stresses. The cost of available individual decorticators, granting, pulverized, and bulla squeezer machines is costly to the farmer’s community. Theref

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Morphological and Sensing Properties of the ZnO-Zn2SnO4 Ternary Phase Nanorod Arrays 6th

Morphological and Sensing Properties of the ZnO-Zn2SnO4 Tern...

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6th International Conference on Nanotechnologies and biomedical engineering, ICNBME 2023

作者： Litra, Dinu Lupan, Cristian Tjardts, Tim Qiu, Haoyi Zadorojneac, Tudor Malai, Dominic Sereacov, Alexandr Aktas, Cenk Siebert, Leonard Lupan, Oleg Center for Nanotechnology and Nanosensors Department of Microelectronics and Biomedical Engineering Technical University of Moldova 168 Stefan cel Mare Av. ChisinauMD-2004 Moldova Department of Materials Science Chair for Multicomponent Materials Faculty of Engineering Kiel University Kaiserstraße 2 Kiel24143 Germany Department of Materials Science Faculty of Engineering Chair for Functional Nanomaterials Kiel University Kaiserstraße 2 Kiel24143 Germany

ISBN: (纸本)9783031427749

In this paper, the morphological and sensing properties of the Sn-doped ZnO-Zn2SnO4 nanorods obtained by the hydrothermal method are presented. The developed methodology exhibits high levels of efficiency and cost-effectiveness, making it particularly suitable for implementation in the field of nanoelectronics and biomedical applications. Scanning electron microscopy was used to analyze the morphology of the Sn-doped ZnO-Zn2SnO4 nanostructures showing nanorod arrays formation. Energy dispersive X-ray spectroscopy was involved to determine the chemical composition and shows uniform distribution of Sn. Structural analysis by X-ray diffraction shows high crystallinity of Sn-doped ZnO-Zn2SnO4 samples with (0002) main orientation and formation of a ternary phase Zn2SnO4. These nanostructures obtained by the hydrothermal method were tested as sensor materials for ethanol and carbon dioxide. A high response of about 130% to 100 ppm ethanol vapor with a very fast response time of 1s at an operating temperature of 250 ℃ was observed. This factor is very important for the detection of harmful or explosive gases. Sn-doping in ZnO and the formation of Zn2SnO4 is considered to be the key factor that changes the morphological and sensing properties for application use in miniaturized photodetectors, light emitting diodes, laser light source, and gas sensors. © 2024, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Zinc oxide

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Photothermal MXene-embedded tannin-Eu^(3+)particles as in situ bacterial vaccines for accelerating healing of wounds infected by seawater immersion and providing persistent anti-infection effects

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Bio-Design and Manufacturing 2025年第1期8卷 116-133,I0045-I0050页

作者： Zhentao Li Ting Song Yanpeng Jiao Zijing Zhu Yang Liao Zonghua Liu Department of Materials Science and Engineering Jinan UniversityGuangzhou 510632China RESEARCH ARTICLE Department of Biomedical Engineering Jinan UniversityGuangzhou 510632China Department of Laboratory Medicine General Hospital of Southern Theatre Command of PLAGuangzhou 510010China

The low temperature,high salt content,and bacterial composition of a seawater environment can induce severe infections in open wounds,thus impeding wound *** date,numerous wound dressings have been developed for injuries and various antibacterial ***,ordinary antibacterial strategies could not provide long-term resistance to infections and could not promote wound ***,we proposed a strategy for enhancing resistance to seawater immersion wound infection by killing bacteria and delivering bacterial antigens in ***,MXene-embedded tannin-Eu^(3+)(M@TA-Eu)particles were constructed to effectively alleviate injuries infected through seawater immersion and persistently fight infection by forming in situ bacterial vaccines and immune *** the particle,the platform composed of TA and Eu3+exhibited provascularization and antigen presentation *** with near-infrared photothermal effect were introduced to kill the bacteria,promote the recruitment of antigen presentation cells,and ultimately enhance vaccination *** results showed that the particles not only effectively accelerated the healing of injuries by relieving wound inflammation and inhibiting bacteria but also produced a potent vaccination by forming in situ bacterial ***,the M@TA-Eu particles are novel materials for high-grade anti-infection dressing.

关键词： MXene Tannin Wound healing Anti-infection In situ vaccine

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Electrochemical and Structural Characterization of Electropolymerized Composite of NH2-Graphene and Polyaniline

Electrochemical and Structural Characterization of Electropo...

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2023 IEEE International Conference on Agrosystem engineering, Technology and Applications, AGRETA 2023

作者： Pa-A, Jonathan E. Enriquez, Erwin P. Silliman University Department of Chemistry Dumaguete City6200 Philippines Ateneo de Manila University School of Science and Engineering Department of Chemistry and Program in Materials Science and Engineering Quezon City1108 Philippines

ISBN: (纸本)9798350347333

The NH2-graphene/polyaniline composites are synthesized by in situ electropolymerization of aniline monomer and NH2-functionalized graphene ('NH2-graphene') sheets in acidic electrolyte solution by constant-potential coulometry. Cyclic voltammetry and FTIR analyses confirm the covalent attachment of polyaniline backbone onto NH2-graphene in the composite. Having the same functional moieties (NH2-group), the polyaniline nanofibers are grafted laterally forming 'synapses' resulting in improved charge-transfer reaction and stability of the composite. This link is believed to be 'phenazine-like' microstructure formed at the edges of graphene sheets as evidenced by SEM and TEM images. The voltammograms of the NH2-graphene/polyaniline composite films coated onto pencil lead graphite electrodes (PLGE) exhibit remarkable increase in the current density relative to the bare PLGE and polyaniline-coated PLGEs. Based on the electrochemical impedance spectroscopy (EIS) measurements, the enhancement in the electrochemical properties of the composite may be due to the good chargetransfer redox activity of polyaniline fibers that are grafted onto the NH2-graphene sheet. The composite film also demonstrated photo-responsive property which could be useful for sensing or photovoltaic cell design. © 2023 IEEE.

关键词： Electrochemical impedance spectroscopy

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Spatially strain-induced and selective preparation of Mo_(x)N(x=1,2)as a highly effective nanoarchitectonic catalyst for hydrogen evolution reaction in a wide pH range

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Rare Metals 2023年第5期42卷 1446-1452页

作者： Chao Huang Xiao-Lin Zhang Jing Tang Dan Li Qing-Dong Ruan Liang-Liang Liu Fang-Yu Xiong Bin Wang Yue Xu Sui-Han Cui Yang Luo Qing-Wei Li Paul K.Chu Department of Physics Department of Materials Science and EngineeringCity University of Hong KongHong Kong999077China Department of Biomedical Engineering City University of Hong KongHong Kong999077China State Key Laboratory of Powder Metallurgy Central South UniversityChangsha410011China School of Mechanical Engineering Liaoning Petrochemical UniversityFushun113001China Advanced Research Institute for Multidisciplinary Science Qilu University of Technology(Shandong Academy of Sciences)Jinan250307China

Developing highly efficient catalysts for the hydrogen evolution reaction(HER)is crucial to commercial water splitting in the global efforts to mitigate fossil fuel combustion and combat global climate *** nitrides(Mo... 详细信息

关键词： catalyst splitting preparation

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A magnetic-enhanced FRET biosensor for simultaneous detection of multiple antibodies

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Smart materials in Medicine 2024年第2期5卷 196-206页

作者： Li, Lihua Lu, Yao Lao, Xinyue Pang, Sin-Yi Song, Menglin Wong, Man-Chung Wang, Feng Yang, Mo Hao, Jianhua Department of Applied Physics The Hong Kong Polytechnic University Hong Kong China Clinical Research Center Department of Joint and Orthopedics Orthopedic Center Zhujiang Hospital Southern Medical University Guangdong Guangzhou510282 China Department of Materials Science and Engineering City University of Hong Kong Hong Kong China Department of Biomedical Engineering The Hong Kong Polytechnic University Hong Kong China

Accurate, rapid and sensitive detection of specific immunoglobulin G (IgG) and immunoglobulin M (IgM) antibodies in human samples is crucial for preventing and assessing pandemics, especially in the case of recent COVID-19 outbreaks. However, simultaneous and efficient detection of IgG and IgM in a single system remains challenging. Herein, we developed a multicolor nanosystem capable of quantitatively analyzing anti-SARS-CoV-2 IgG and IgM with high sensitivity within 20 min. The detection system consists of core-shell upconversion nanoparticles (csUCNPs), secondary antibodies labeled with fluorescent dyes (sab), and magnetic nanocrystals (PMF). By leveraging the Förster resonance energy transfer (FRET) effect, the photoluminescence (PL) intensity of blue and green regions is restored for IgG and IgM detection, respectively. Inspiringly, owing to the introducing of PMF, the limits of detection (LODs) of IgG and IgM tested are improved to 89 fmol L−1 and 19.4 fmol L−1, representing about 416-folds and 487-folds improvement over only-dye dependent system, respectively. Mechanistic investigations reveal that the high collective effect and surface energy transfer efficiency from csUCNPs to PMF contribute to the enhanced detection sensitivity. The assay enables us to quantify clinical vaccinated samples with high specificity and precision, suggesting our multicolor platform can be a promising alternative for clinical point-of-care serological assay. © 2024 The Authors

关键词： Coronavirus

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