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Interfacial engineering and rapid thermal crystallization of Sb2S3 photoanodes for enhanced photoelectrochemical performances

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Journal of Energy Chemistry 2025年 108卷 417-426页

作者： Tan, Runfa Hong, Seo Yeong Jeong, Yoo Jae Shin, Seong Sik Cho, In Sun Department of Materials Science & Engineering Ajou University Suwon16499 Cuba Department of Energy Systems Research Ajou University Suwon16499 Cuba Materials Science and Engineering Program University of Colorado Boulder BoulderCO80303 United States Sungkyunkwan University Suwon16419 Cuba Sungkyunkwan University Suwon16419 Cuba

Antimony sulfide (Sb2S3) is a promising material for photoelectrochemical (PEC) devices that generate green hydrogen from sunlight and water. In this study, we present a synthesis of high-performance Sb2S3 photoanodes via an interface-engineered hydrothermal growth followed by rapid thermal annealing (RTA). A TiO2 interfacial layer plays a crucial role in ensuring homogeneous precursor deposition, enhancing light absorption, and forming efficient heterojunctions with Sb2S3, thereby significantly improving charge separation and transport. RTA further improves crystallinity and interfacial contact, resulting in dense and uniform Sb2S3 films with enlarged grains and fewer defects. The optimized Sb2S3 photoanode achieves a photocurrent density of 2.51 mA/cm2 at 1.23 V vs. the reversible hydrogen electrode (RHE), one of the highest reported for Sb2S3 without additional catalysts or passivation layers. To overcome the limitations of oxygen evolution reaction (OER), we employ the iodide oxidation reaction (IOR) as an alternative, significantly lowering the overpotential and improving charge transfer kinetics. Consequently, it produces a record photocurrent density of 8.9 mA/cm2 at 0.54 V vs. RHE. This work highlights the synergy between TiO2 interfacial engineering, RTA-induced crystallization, and IOR-driven oxidation, offering a promising pathway for efficient and scalable PEC hydrogen production. © 2025 science Press

关键词： Thermal engineering

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Scaled-up synthesis of defect-rich layered double hydroxide monolayers without organic species for efficient oxygen evolution reaction

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Green Energy & Environment 2022年第5期7卷 975-982页

作者： Haoyuan Chi Jingwen Dong Tian Li Sha Bai Ling Tan Jikang Wang Tianyang Shen Guihao Liu Lihong Liu Luyi Sun Yufei Zhao Yu-Fei Song State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing100029China College of Chemistry Key Laboratory of Theoretical&Computational Photochemistry of Ministry of EducationBeijing Normal UniversityBeijing100875China Polymer Program Institute of Materials Science and Department of Chemical&Biomolecular EngineeringUniversity of ConnecticutStorrsConnecticut06269USA Beijing Advanced Innovation Center for Soft Matter Science and Engineering Beijing University of Chemical TechnologyBeijing100029China

The scaled-up synthesis of organic-free monolayer nanomaterials is highly desirable,especially in obtaining green energy by *** this study,a method for the scaled-up synthesis of the series of monolayer layered double hydroxides(LDHs)without the addition of organic solvents is reported via the separate nucleation and aging steps *** resulting monolayer LDHs with the thicknesses of less than 1 nm showed a narrow thickness distribution.X-ray absorption fine-structure revealed that monolayer NiFe-LDH nanosheets have a number of oxygen and metal vacancies *** a practical application,monolayer NiFe-LDH nanosheets containing defects showed an enhanced electrocatalytic water oxidation activity compared with that of bulk *** functional theory calculations uncovered that excellent catalytic activity is attributed to vacancies *** proposed method is an economical and universally applicable strategy for the scaled-up production of monolayer LDHs.

关键词： process synthesis monolayer

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Micromechanical behavior of (CoCrNi) 94 Al 3 Ti 3 medium-entropy alloy

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Journal of materials Research and Technology 2025年 37卷 41-47页

作者： Ming Liu Zhitong Xu Rui Liang Shanhong Wan Fuqian Yang Jinyang Jiang Department of Engineering Science Faculty of Innovation Engineering Macau University of Science and Technology Macau SAR 999078 China Fujian Provincial Key Laboratory of Terahertz Functional Devices and Intelligent Sensing School of Mechanical Engineering and Automation Fuzhou University Fuzhou Fujian 350108 China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical Physics Chinese Academy of Sciences Lanzhou Gansu 73000 China Materials Program Department of Chemical and Materials Engineering University of Kentucky Lexington KY 40506 USA Jiangsu Key Laboratory of Construction Materials School of Materials Science and Engineering Southeast University Nanjing 211189 China

The micromechanical behavior of (CoCrNi) 94 Al 3 Ti 3 medium-entropy alloy (MEA) with and without Al 2 O 3 nanoparticles was investigated by nanoindentation, microhardness, and microscratch tests. Adding Al 2 O 3 nanoparticles in the (CoCrNi) 94 Al 3 Ti 3 MEA increases elastic modulus, hardness, brittleness, and friction coefficient. The MEAs with and without Al 2 O 3 exhibit indentation-induced pile-up, resulting in the inapplicability of the Oliver & Pharr method. The elastic modulus and indentation hardness were assessed by the work-based approach. Indentation size effect is observed for the MEA, but is absent with the addition of Al 2 O 3 nanoparticles.

关键词： Medium-entropy alloy Microhardness Microscratch Nanoindentation Micromechanical characterization

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Prediction of Weather Patterns Using Linear Angstrom Model

Prediction of Weather Patterns Using Linear Angstrom Model

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2022 Advances in science and engineering Technology International Conferences, ASET 2022

作者： Aljaghoub, Haya Alashkar, Adnan Alami, Abdul Hai Tawalbeh, Muhammad University of Sharjah Department of Industrail Engineering and Engineering Management Sharjah United Arab Emirates American University of Sharjah Materials Science and Engineering PhD Program Sharjah United Arab Emirates University of Sharjah Department of Sustainable and Renewable Energy Engineering Sharjah United Arab Emirates

ISBN: (纸本)9781665418010

The paper investigates the correlation between solar irradiance and sunlit hours for the city of Sharjah, United Arab Emirates. This correlation is a strong function of the weather conditions, and is vital for the design and operation of solar energy systems. The Angstrom Model is a straightforward tool that establishes a linear relationship where the model parameters b and a (slope and y-intercept, respectively) are evaluated through plotting of experimental measurements. Wind speed and relative humidity are collected to interpret their effect on the quality of incident solar radiation. The model takes into consideration winter and summer months of the year 2021, hence it provides a complete weather pattern for the year. With continuous data logging, the model will be developed to predict the weather patterns of the city of Sharjah. © 2022 IEEE.

关键词： Solar energy

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3D Magnetization Reconstruction for Lorentz Microscopy using Differential programming

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Microscopy and microanalysis : the official journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada 2023年第1期29卷 1756-1757页

作者： McCray, Arthur R C Cherukara, Mathew Petford-Long, Amanda K. Phatak, Charudatta Materials Science Division Argonne National Laboratory Lemont IL United States Applied Physics Program Northwestern University Evanston IL United States Advanced Photon Source Argonne National Laboratory Lemont IL United States Department of Materials Science and Engineering Northwestern University Evanston IL United States

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Optothermally Assembled Nanostructures

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Accounts of materials Research 2021年第5期2卷 352-363页

作者： Jingang Li Yuebing Zheng Materials Science&Engineering Program Texas Materials Instituteand Walker Department of Mechanical EngineeringThe University of Texas at AustinAustinTexas 78712United States

CONSPECTUS:Nanofabrication is one of the core techniques in rapidly evolving nanoscience and *** top-down nanofabrication approaches such as photolithography and electron beam lithography can produce high-resolution nanostructures in a robust ***,these methods usually involve multistep processing and sophisticated instruments and have difficulty in fabricating three-dimensional complex structures of multiple materials and ***,bottom-up techniques have emerged as promising alternatives to fabricating nanostructures via the assembly of individual building *** comparison to top-down lithographical methods,bottom-up assembly features the on-demand construction of superstructures with controllable configurations at single-particle *** size,shape,and composition of chemically synthesized building blocks can also be precisely tailored down to the atomic scale to fabricate multimaterial architectural structures of high *** techniques have been reported to assemble individual nanoparticles into complex structures,such as self-assembly,DNA nanotechnology,patchy colloids,and optically controlled *** them,the optically controlled assembly has the advantages of remote control,site-specific manipulation of single components,applicability to a wide range of building blocks,and arbitrary configurations of the assembled *** this Account,we provide a concise review of our contributions to the optical assembly of architectural materials and structures using discrete nanoparticles as the building *** exploiting entropically favorable optothermal conversion and controlling optothermal−matter interactions,we have developed optothermal assembly techniques to manipulate and assemble individual *** techniques can be operated both in solution and on solid ***,we discuss the opto-thermoelectric assembly(OTA)of colloidal particles into superstructures by co

关键词： structures architectural printing

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Recent advances in electronic devices for monitoring and modulation of brain

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Nano Research 2021年第9期14卷 3070-3095页

作者： Yong Won Kwon Yoon Sun Jun Young-Geun Park Jiuk Jang Jang-Ung Park Nano Science Technology Institute Department of Materials Science and EngineeringYonsei UniversitySeoul 03722Republic of Korea Center for Nanomedicine Institute for Basic Science(IBS)Seoul 03722Republic of Korea Graduate Program of Nano Biomedical Engineering(NanoBME) Advanced Science InstituteYonsei UniversitySeoul 03722Republic of Korea

The brain is actuated by billions of neurons with trillions of interconnections that regulate human *** the mechanisms of these systems that induce sensory reactions and respond to disease remains one of the greatest challenges in science,engineering,and *** advances in nanomaterials and nanotechnologies have led to the extensive research of electronic devices for brain interfaces to better understand the neural activities of the brains complex nervous *** development of sensor devices for monitoring the physiological signals of the brain related to traumatic injury status has accompanied by the progress of electronic neural probes in *** addition,these neurological and stereotactic surgical revolutions hold immense potential for clinical analysis of pharmacological systems within cerebral ***,we review the progress of electronic devices interfacing with brain in terms of the materials,fabrication technologies,and device *** activity can be measured and modulated by brain probes based on newly developed nanofabrication ***,in vivo pathological monitoring of the brain and pharmacological assessment has been developed in miniaturized and wireless *** also consider the key challenges and prospects for further development,and explore the future directions emerging in the latest research.

关键词： neural interfaces neural recording neuromodulation intracranial pressure monitoring microfluidic drug delivery

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Autonomous Burrowing and Retrieval of Soft Robotic Anchors in Granular Media

Autonomous Burrowing and Retrieval of Soft Robotic Anchors i...

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IEEE International Conference on Soft Robotics (RoboSoft)

作者： Dongting Li Michael T. Tolley Nick Gravish Department of Mechanical and Aerospace Engineering University of California San Diego (UCSD) CA USA Materials Science and Engineering Program University of California San Diego CA USA

ISBN: (数字)9798331520205

ISBN: (纸本)9798331520212

Vertical digging into and out of granular media is a challenging task for autonomous systems. Granular media present considerable resistance to vertical penetration due to the high friction forces and large pressure at depths. In this paper, we present a soft robot that is capable of digging into and out of granular media to depths over 10× its body length. Our robot incorporates a vibration motor to locally fluidize the granular media for burrowing, and a soft pneumatic actuator to adjust the volume and hence the density of the robot, allowing it to transition from digging down to digging up. To analyze the performance of the robot, we measure its weight and density, track its location using a motion capture system, and investigate the effect of local fluidization. When the robot is buried and inflated with vibration turned off, it can increase its passive anchoring force by 5.22× (up to 35 N) relative to when the robot is deflated with vibration on. By contrast, by inflating the soft pneumatic bladder and providing vibration the robot is able to actively unburrow.

关键词： Vibrations Weight measurement Pneumatic actuators Tracking Pneumatic systems Media Soft robotics Motors Motion capture Immune system

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Design of Quantum Dot Color Convertors for Inkjet-Printed Optoelectronic Devices: Violet-Converted Full Color Mini-LED

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Advanced materials Technologies 2024年第3期9卷

作者： Lin, Chen-Te Zhuan, Yi-long Jung, Nian-Ting Hoang, Minh-Son Chen, Hsueh-Shih Ph.D. Program in Prospective Functional Materials Industry College of Engineering National Tsing Hua University Hsinchu30013 Taiwan Department of Materials Science and Engineering National Tsing Hua University Hsinchu30013 Taiwan College of Semiconductor Research National Tsing Hua University Hsinchu30013 Taiwan Department of Chemical Engineering & Materials Science College of Engineering Yuan Ze University Taoyuan32003 Taiwan

This study presents a strategy of design and development of inkjet-printable and UV-curable quantum dot (QD) polymer-based inks and color conversion (CC) film for use in optoelectronic devices. At first, the preparation of a QD ink is focused on two key aspects, that are QD chemical compatibility and ink printability. In the hybrid organic–inorganic polymer/QDs system, it must be formulated to a well-dispersed ink, in which a dispersant additive without negative effect on QDs is introduced to enhance the QD suspension. As the optical density of final dried QD film is one of the most critical concerns in color conversion, QD concentration should be as high as possible in the ink, which increases the ink viscosity. Consequently, a trade-off between QD concentration and the ink viscosity associated with the ink-jetting temperature is considered to ensure the ink printability. Finally, the designed QD ink is printed as color conversion film on a mini-LED panel composed of two violet mini-chips to produce red and green emissions, while blue emission directly comes from a blue mini-chip. The final conversion efficiency of QDCC on mini-LED panel are between 35% and 45%, showing the promising applications in optoelectronic devices. © 2023 Wiley-VCH GmbH.

关键词： Semiconductor quantum dots

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Low-loss, nonvolatile tuning of Bragg structures with Sb2Se3

Low-loss, nonvolatile tuning of Bragg structures with Sb2Se3

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CLEO: Applications and Technology in CLEO 2024, CLEO: A and T 2024 - Part of Conference on Lasers and Electro-Optics

作者： Nobile, Nicholas A. Lian, Chuanyu Sun, Hongyi Huang, Yi-Siou Mills, Brian Popescu, Cosmin Constantin Callahan, Dennis Hu, Juejun Ríos Ocampo, Carlos A. Youngblood, Nathan Electrical & Computer Engineering Department University of Pittsburgh PittsburghPA15213 United States Department of Materials Science & Engineering University of Maryland College ParkMD20742 United States Institute for Research in Electronics and Applied Physics University of Maryland College ParkMD20742 United States Department of Materials Science & Engineering Massachusetts Institute of Technology CambridgeMA02139 United States Draper Scholar Program The Charles Stark Draper Laboratory Inc. CambridgeMA02139 United States The Charles Stark Draper Laboratory Inc. CambridgeMA02139 United States

Sb2Se3 is used to switch between broadband transparency and enhanced index contrast in two device types leveraging Bragg gratings for tunable stop- and pass-band functionalities. Experimental results highlight fabrication challenges and efficacy of the designs. © Optica Publishing Group 2024, © 2024 The Author(s)

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