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16th Pacific Rim Conference on Lasers and Electro-Optics, CLEO-PR 2024

作者： Kim, Dasom Hou, Jin Lee, Geon Agrawal, Ayush Kim, Sunghwan Zhang, Hao Bao, Di Baydin, Andrey Wu, Wenjing Tay, Fuyang Huang, Shengxi Hagenmüller, Daivd Chia, Elbert E. M. Kim, Dai-Sik Seo, Minah Mohite, Aditya D. Kono, Junichiro Applied Physics Graduate Program Smalley-Curl Institute Rice University HoustonTX77005 United States Department of Electrical and Computer Engineering Rice University HoustonTX77005 United States Department of Materials Science and NanoEngineering Rice University HoustonTX77005 United States Sensor System Research Center Korea Institute of Science and Technology Seoul02792 Korea Republic of Department of Physics and Astronomy Seoul National University Seoul08826 Korea Republic of Department of Chemical and Biomolecular Engineering Rice University HoustonTX77005 United States Ulsan44919 Korea Republic of Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University 637371 Singapore Smalley-Curl Institute Rice University HoustonTX77005 United States Université de Strasbourg Cnrs Strasbourg67000 France KU-KIST Graduate School of Converging Science and Technology Korea University Seoul02841 Korea Republic of Department of Physics and Astronomy Rice University HoustonTX77005 United States

Methods for harnessing vibrational states are desired for phonon-based technologies. We realized ultrastrong coupling of two phonon modes in perovskite materials induced by ultrastrong coupling with a common photonic ... 详细信息

ISBN: (纸本)9798350372076

关键词： Organic-inorganic materials

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Development of high on/off current ratio in p-type copper oxide thin-film transistors with a back-end-of-line compatible process

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Journal of Vacuum Science and technology A: Vacuum, Surfaces and Films 2024年第5期42卷

作者： Kuo, Chi-Yuan Lin, Wei-Chen Lo, Tsung-Tien Shen, Ching-Hsuan Shen, Ming-Yu Lee, Chia-Chan Lin, Chi-Ping Lin, Yuang-Ming Huang, Haw-Tyng Yeh, Po-Chun Chen, Hsin-Chu Wu, Chih-I Graduate Institute of Photonics and Optoelectronic Department of Electrical Engineering National Taiwan University Taipei106 Taiwan Program of Quantum Technology and Advanced Material College of Science National Tsing Hua University Hsinchu300 Taiwan Institute of Innovative Semiconductor Manufacturing National Sun Yat-sen University Kaohsiung804 Taiwan Institute of Advanced Semiconductor Packaging and Testing National Sun Yat-sen University Kaohsiung804 Taiwan Department of Materials Science and Engineering National Taiwan University Taipei106 Taiwan Electronic and Optoelectronic System Research Laboratories Industrial Technology Research Institute Hsinchu300 Taiwan

The objective of this study is to develop an efficient process to synthesize wafer scale p-type cuprous oxide (Cu2O) with the back-end-of-line (BEOL) compatible process (2/Si substrates followed by rapid thermal oxidation to oxidize it into large-area, uniform Cu2O. Bottom-gate Cu2O thin-film transistors (TFTs) were fabricated as gate dielectric on 100 nm thermal oxide. The results of the ID-VG curve demonstrate that we have successfully fabricated BEOL-compatible p-type Cu2O TFTs. The drain-off current can be achieved to 0.1 pA, with the highest on/off ratio reaching up to 6 orders. Significantly, the TFT with an on/off ratio of 106 is sufficient to meet the requirements for digital circuit applications, including logic circuits, and the BEOL-compatible process (2O TFTs. © 2024 Author(s).

关键词： Thin film transistors

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Ecotoxicity of micro- and nanoplastics on aquatic algae: Facts, challenges, and future opportunities

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Journal of Environmental Management 2023年 346卷 118982页

作者： Nguyen, Minh-Ky Lin, Chitsan Nguyen, Hoang-Lam Le, Van-Giang Haddout, S. Um, Myoung-Jin Chang, Soon W. Nguyen, D. Duc Program in Maritime Science and Technology National Kaohsiung University of Science and Technology Kaohsiung81157 Taiwan Faculty of Environment and Natural Resources Nong Lam University Linh Trung Ward Thu Duc City Ho Chi Minh City700000 Viet Nam Department of Marine Environmental Engineering National Kaohsiung University of Science and Technology Kaohsiung81157 Taiwan Department of Civil Engineering McGill University Montreal Canada Central Institute for Natural Resources and Environmental Studies Vietnam National University Hanoi111000 Viet Nam Department of Physics Ibn Tofail University Morocco Department of Civil & Energy System Engineering Kyonggi University 442-760 Korea Republic of Faculty of Environmental and Food Engineering Nguyen Tat Thanh University 300A Nguyen Tat Thanh District 4 HCM City755414 Viet Nam

The production of plastic has exponentially increased in recent years, leading to the release of millions of tons of plastic waste into the environment annually. This waste can break down into smaller micro- and nanoplastics (MNPs) that are toxic and reactive to life forms, including humans. MNPs are particularly concerning for marine biologists and environmental scientists due to their toxic impacts on aquatic organisms, including algae, which are the foundation of the food chain. The review provides a comprehensive overview of the (eco)toxicity assessment of MNPs on aquatic algal communities, highlighting the novel insights gained into the ecotoxicity of various MNPs on algae and the associated health risks for aquatic ecosystems, food chains, and humans. This article also discusses current challenges and future research opportunities to address these challenges, making it a valuable contribution to the field of environmental science. Overall, this work is one of the first efforts to comprehensively assess the effects of MNPs on aquatic algae, emphasizing the significant risks that MNPs pose to essential ecosystems and human health. © 2023 Elsevier Ltd

关键词： Health risks

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Initiation of ice jam in front of bridge piers-An experimental study

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Journal of Hydrodynamics 2019年第1期31卷 117-123页

作者： Jun Wang Jian Hua Pang-pang Chen Jueyi Sui Peng Wu Todd Whitcombe College of Civil and Hydraulic Engineering Hefei University of TechnologyHefei 230009China Modern Green Development Co.LTD Beijing 100028China Environmental Sciences and Engineering Program University of Northern British ColumbiaPrince GeorgeBCCanada Environmental System Engineering Program University of ReginaReginaCanada

The presence of bridge piers in natural rivers significantly changes the flow and boundary *** a consequence,ice jams can often be initiated in front of bridge *** the changes in flow conditions,two types of ice jam formation may appear:surface accumulation of ice blocks (surface ice blockage) and thickened accumulation of ice blocks (vertical ice blockage).In the present study,the initiation process of ice jam was studied based on *** is found that the critical ice concentration for ice jam blockage depends on the ice block dimension,channel opening and flow *** surface blockage conditions,a larger ratio of ice cube dimension to channel opening (between piers) can result in a smaller critical ice concentration for ice jam blockage,which has no obvious relation with flow *** vertical blockage conditions,the critical ice concentration for ice jam blockage increases with flow Froude number and decreases with the ratio of ice dimension to channel opening (between piers).Based on experiments conducted in laboratory,equations for determining critical ice concentration for these two types of ice jam blockage have been developed.

关键词： Bridge piers surface ice blockage vertical ice blockage critical ice concentrations

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IoT for Water Quality Categorization

IoT for Water Quality Categorization

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International Conference on Cybernetics and Intelligent system (ICORIS)

作者： Hermantoro Sastrohartono Andreas Wahyu Krisdiarto Arief Ika Uktoro Reza Rahutomo Teddy Suparyanto Bens Pardamean Agricultural Engineering Department Faculty of Agricultural Technology Institute of Agriculture STIPER Yogyakarta Indonesia Information System Department School of Information Systems Bina Nusantara University Jakarta Indonesia Bioinformatics & Data Science Research Center Bina Nusantara University Jakarta Indonesia Computer Science Department BINUS Graduate Program Master of Computer Science Bina Nusantara University Jakarta Indonesia

In agricultural water research, the adoption of Internet of Things (IoT) technology has emerged as a pivotal approach for large-scale data collection. Water availability in the context of water quality is very important, both for domestic and industrial purposes. For domestic purposes, drinking water and bathing water are separated. Meanwhile, for the palm oil industry, boiler filler is differentiated from additional process water (dilution water). Water quality parameters can be assessed from turbidity and Total Dissolve Solid (TDS). Measurements using measuring instruments separately and repeatedly require significant energy, time, and costs. This research was conducted with the primary objective of presenting a novel method for categorizing water quality with the approach of IoT sensor technology. The research methodology entailed the utilization of an integrated IoT water sensors system in conjunction with manual water categorization. The methods consist of (1) system design, (2) design and installation of sensor and IoT-based microcontrollers, and (3) accuracy and precision testing compared with laboratory measurements. The precision of the integrated IoT water sensors was assessed through a dedicated sensor precision test, resulting in an accuracy rate of 94.4% for the turbidity sensor and 97.5% for the TDS sensor. Notably, this approach successfully discriminated drinking water with valid categorization, while other water types, including groundwater, water with tea, and water with coffee, yielded null categorization results.

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Natural resin-based solvent exchange induced in-situ forming gel for vancomycin HCl delivery to periodontal pocket

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Materials Today: Proceedings 2021年 47卷 3585-3593页

作者： Ei Mon Khaing Torsak Intaraphairot Tiraniti Chuenbarn Takron Chantadee Thawatchai Phaechamud Program of Pharmaceutical Engineering Thailand Department of Pharmaceutical Technology Thailand Department of Biopharmacy Thailand Natural Bioactive and Material for Health Promotion and Drug Delivery System Group (NBM) Faculty of Pharmacy Silpakorn University Nakhon Pathom 73000 Thailand

Natural resins such as benzoin, propolis and rosin have been widely employed in the pharmaceuticals. In this study, in situ forming gels (ISG) were prepared using natural resins as matrix forming agents to deliver vancomycin hydrochloride (VH) for periodontitis treatment. The formulations were investigated for their physicochemical properties, drug release and antimicrobial activities. Transformation from a solution to a solid matrix was achieved after the formulas were exposed to a simulated crevicular fluid. The rate of resin matrix formation was found to decrease with time and became more opaque owing to gradual phase separation with resin network formation. They flowed with pseudo-plastic behavior and provided appropriate injectability as well as good mechanical properties. Sustained VH release was attained for a 5-day period. VH-loaded natural resin ISGs inhibited against Staphylococcus aureus, Porphyromonas gingivalis, Candida albicans, and Streptococcus mutans. Natural resin-based ISGs comprising of propolis or benzoin showed a more effective delivery of VH than that of rosin. Thus, VH-loaded benzoin and propolis ISGs were found to have a possible application for infected periodontitis treatment.

关键词： In situ forming gel Propolis Benzoin Rosin Antimicrobial

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Quality Monitoring Methodology for Micro-Shrinkage of Thick-Walled Injection Molded Components

SSRN

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SSRN 2022年

作者： Huang, Ming-Shyan Chen, Jian-Yu Xiao, Yu-Qi Department of Mechatronics Engineering National Kaohsiung University of Science and Technology 1 University Road Yanchao Dist. Kaohsiung City824 Taiwan Bachelor’s Program of Precision System Design Feng Chia University 100 Wenhwa Road Seatwen Taichung City40724 Taiwan

Sink mark degrades the surface quality of the thick-walled injection molded components. An effective method for quantifying sink marks, and predicting the occurrence of such defects as a function of the injection molding process parameters, are of significant interest in improving the molding quality. The present study proposes a method for measuring the micro-shrinkage using a simple image-processing technique. Simulation and experimental trials are performed to investigate the effects of injection molding parameters on the quality of the polymer melt (as evaluated using quality indexes extracted from the pressure profiles within the chamber and the tie-bar elongation, respectively) and the quality of the final molded component. The sink mark is determined mainly by the holding pressure. The quality indexes revealed in this study are all highly correlated with micro-shrinkage. They provide a viable means of predicting the formation of sink marks and excessive micro-shrinkage in thick-walled injection molded components. © 2022, The Authors. All rights reserved.

关键词： Injection molding

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The Pairing Analysis Improvement of Magnetized Structure in Electromagnetic Bulging Process in Case of Tube with Field Shaper

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Journal of Electromagnetic Analysis and Applications 2024年第4期16卷 43-67页

作者： Blaise Kevine Lenz Soronga Zhanqian Zhan Jing Liu Jonas Asamoah Mohamed Bangali Bangura Matala Makiese N’kodia Kambani Chrionie Md Jobayer Hossain Yongdong Chen Program Debugging and Design Department Guangdong Lyric Robot Automation Co. Ltd Huizhou China Electrical and Automation Department China Three Gorges University Yichang China Electronic Department Power Electronic Research Center University of Kent Giles Ln Canterbury UK Program Debugging Department Guangdong Lyric Robot Automation Co. Ltd. Huizhou China Electrical and Computer Engineering Department South China University of Technology Guangzhou China World Standardization Certification and Testing Group (Shenzhen) Co. Ltd. Shenzhen China Electrical Engineering-Power System Mapon University Kindu Democratic Republic of Congo Department of Economy Managment School of Management Computer and Telecomunication Rabbat Marocco Materials Visual Calibration Department Guangdong Lyric Robot Automation Co. Ltd. Huizhou China Program Design Department Guangdong Lyric Robot Automation Co. Ltd. Huizhou China

In the current practical science, the accuracy in the formability of metal alloys being the goal when using electromagnetic forming (EMF) technology, which is a high-speed processing technology that uses Lorentz forces to achieve plastic deformation of sheet metal;according to the previous analysis, the results have shown that in most cases, the Lorentz force acting on the workpiece (metal) is not uniform, there are uneven axial deformations of the metal plates which prevent the rapid advancement of today’s technology. In this article, we presented some advanced analyzes which will lead us to improve the technical solution for the problems of non-uniform axial deformations of the metals in the traditional tube electromagnetic forming technology (EMF). A field shaper is used as a practical forming tool to influence the magnetic field and magnetic pressure distribution, thereby improving the forming ability and result during the electromagnetic forming (EMF) process and we see that induced eddy current control is realized by changing the structural parameters of the magnetic field shaper;which improves the strength and controllability of the magnetic force that acts on the workpiece;thereby a greater radial magnetic pressure can be achieved with field shaper than the case without it;the field shaper regulates the electromagnetic force, the distribution of the magnetic pressure decreases, and the uniform force area of the tube increases which effectively enhances the uniform range of the pipe electromagnetic bulging and the electromagnetic induction coupling between the coil and the metallic workpiece is generally required to produce the Lorentz forces. Using COMSOL Multiphysics® simulation software helped us to accurately represent the real world, simulating multiple physical effects that happened in this model during the process.

关键词： Electromagnetic Forming Field Shaper Lorentz Force Magnetic Pressure Distribution

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Quantifying Outdoor Cooling Effects of Vertical Green system on Mean Radiant Temperature

SSRN

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SSRN 2023年

作者： Kim, Eun Sub Yun, Seok Hwan Lee, Dong Kun Kim, Na Youn Piao, Zheng Gang Kim, Sang Hyuck Park, Seunghwan Interdisciplinary Program in Landscape Architecture Seoul National University Seoul08826 Korea Republic of Integrated Major in Smart City Global Convergence Program Seoul National University Seoul08826 Korea Republic of Specialized Graduate School of Intelligent Eco-Science 4 Dept. of Landscape Architecture Seoul National University Seoul08826 Korea Republic of Department of Landscape Architecture and Rural System Engineering Seoul National University Seoul08826 Korea Republic of Department of Building Energy Research Korea Institute of Civil Engineering and Building Technology Goyang10223 Korea Republic of

Vertical green systems (VGS) are expected to mitigate outdoor heat stress through a transpiration cooling effect. There is a lack of knowledge on how VGS influence outdoor thermal comfort, particularly focusing on energy flux. This study quantifies the outdoor cooling effects of VGS, and distinguishes the energy flux between them and outdoor urban spaces. In addition, we discuss their cooling efficiency. Outdoor experiments were conducted during the hot summer period on building facades in city. Our study on VGS focused on the measurement of climatic variables, surface temperatures of plant leaves (Fatsia japonica), net radiation, and estimating transpiration and evaporation. The surface temperature of VGS were up to 4.3 °C higher than those of high albedo walls, while the reflected radiations (short and long-wave radiation) were 120 w/m2 lower than albedo walls during the day. The mean radiant temperature (MRT) of VGS was 3.02 °C lower than the high albedo wall during daytime, except in the case of shaded areas (0.45 °C). We confirmed that the cooling efficiency of transpiration was 7.38 times more effective than evaporation from soil without plants. Therefore, VGS is efficient in terms of long-term heat reduction and can be an effective strategy to mitigate outdoor heat stress. © 2023, The Authors. All rights reserved.

关键词： Transpiration

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Feasibility of Single-Lead Apple Watch Electrocardiogram in Atrial Fibrillation Detection Among Heart Failure Patients

JACC: Advances

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JACC: Advances 2024年第7P2期3卷 101051页

作者： Heo, Rachel H. Foroutan, Farid De Luca, Enza Albertini, Lisa Rac, Valeria E. Cafazzo, Joseph A. Hershman, Steve G. Duero Posada, Juan G. Ross, Heather J. Moayedi, Yasbanoo University of Toronto Ted Rogers Centre for Heart Research University of Toronto Program for Health System and Technology Evaluation Toronto General Hospital Research Institute University Health Network Institute of Health Policy Management and Evaluation Dalla Lana School of Public Health University of Toronto Centre for Digital Therapeutics Biomedical Engineering University Health Network Institute of Health Policy Management and Evaluation Institute of Biomedical Engineering University of Toronto School of Information The University of Texas at Austin

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