Article
Materials Science, Multidisciplinary
Yanyan Zhang, Dongliang Zhang, Libin Zhang, Bo Yang, Shengnan Shen, Zhiyin Gan
Summary: This research investigates the effect of surface roughness of diamond seeds on crystal growth quality. The results indicate that the surface roughness of the diamond seeds does not affect the surface roughness of the grown diamonds. A certain level of roughness can improve the internal stress of diamonds, but slightly reduce the crystalline quality. However, the surface roughness has almost no impact on the optical properties of the diamonds. Therefore, using diamond seeds with low roughness after cutting for direct growth can significantly reduce the cost of producing gem-quality diamonds.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Yabo Huang, Liangxian Chen, Siwu Shao, Ke Huang, Kang An, Yuting Zheng, Jinlong Liu, Junjun Wei, Chengming Li
Summary: In this study, a freestanding diamond thermal conductive film with a diameter of 7 inches and an average thickness of 1.54 mm was prepared by DC arc plasma jet CVD with multi-stage magnetic fields. The morphology, structure, and thermal conductivity of the diamond film were analyzed. The results showed that the magnetic field improved the thickness uniformity of the film and affected the grain structure and thermal conductivity. The study provides insights into the fabrication and properties of diamond films.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Engineering, Chemical
Ke Shao, Ya-Hao Hu, Xian Meng, He-Ji Huang, Su-Rong Sun, Hai-Xing Wang
Summary: The significance of the restrike mode in a DC arc device and its relation to operating conditions. Under fixed gas flow, the restrike frequency increases with arc current, while the voltage jump decreases; under fixed arc current, both frequency and jump increase with gas flow rates.
PLASMA CHEMISTRY AND PLASMA PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Wei Cao, Zhibin Ma, Deng Gao, Qiuming Fu, Hongyang Zhao
Summary: Avoiding the appearance of PCD rim during the growth of SCD by MPCVD is challenging. By regulating the distribution of radicals and reducing the temperature at the seed edge, the formation of off-angles on the (001) crystal face can be achieved, inhibiting the secondary nucleation. The SCD surface displayed a terrace flow growth pattern in a dual-substrate reactor and a spiral growth mode in a single-substrate reactor.
Article
Chemistry, Physical
Kazuki Kobayashi, Xufang Zhang, Toshiharu Makino, Tsubasa Matsumoto, Takao Inokuma, Satoshi Yamasaki, Christoph E. Nebel, Norio Tokuda
Summary: In this study, a new method was proposed to create a buried heavily boron doped p+-structure with a step-free diamond surface in nitrogen doped diamond. Experimental observations and measurements confirmed the successful formation of the buried structure and uniform doping.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Electrical & Electronic
Wenchao Miao, Qi Xu, K. H. Lam, Philip W. T. Pong, H. Vincent Poor
Summary: Protection devices are crucial in DC systems, but series arc faults may not be detected by conventional devices, leading to malfunctions and fire hazards. This paper proposes a series arc-fault detection system based on modified EMD technique and SVM algorithm for reliable and efficient operation of DC systems. The effectiveness of arc-fault detection is significantly improved by acquiring accurate arc signatures without predefining various thresholds.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Physical
Javier Sierra Gomez, Jose Vieira, Mariana Amorim Fraga, Evaldo Jose Corat, Vladimir Jesus Trava-Airoldi
Summary: This study investigated the growth of SCD films on a commercial HPHT single-crystal diamond seed substrate using MWPACVD technique, the influence of methane concentration on the properties of the SCD films, and the relationship between film thickness and growth rate.
Article
Engineering, Chemical
Chong Niu, Ya-Hao Hu, Ke Shao, Su-Rong Sun, Hai-Xing Wang
Summary: Recent experiments have shown that an annular boss anode structure can improve anode heat transfer. Numerical simulations based on a two-temperature chemical non-equilibrium model were performed to investigate the effect of the annular boss on anode arc attachment behavior. The results indicate that the annular boss changes the electric field distribution, attracting the arc to the boss and suppressing the formation of the anode jet. Compared to a planar anode, an anode with an annular boss experiences a significant reduction in heat flux and maximum temperature.
PLASMA CHEMISTRY AND PLASMA PROCESSING
(2022)
Article
Nanoscience & Nanotechnology
Soumen Karmakar
Summary: This study investigates the erosion of an anode and the deposition of the eroded mass on the cathode surface at different arc currents using roughly oriented graphite electrodes in DC carbon arc discharge. It was found that the nature of anode erosion depends on the arc current, affecting the morphology and composition of the synthesized cathode deposits. Experimental results show that by adjusting the arc current, carbon arc discharge can selectively generate carbon nanotubes and layered-graphene sheets.
Article
Computer Science, Artificial Intelligence
Guven Balta, Cagdas Hisar, Necmi Altin
Summary: This paper addresses the issue of disturbances and uncertainties in power electronics circuits and proposes the use of hysteresis modulation based sliding mode control to minimize chattering effect. It also introduces fuzzy logic control for switching frequency regulation in power electronics circuits. Experimental tests demonstrate the successful regulation of switching frequency and output voltage, highlighting the dynamic and steady state performance of the proposed techniques.
EXPERT SYSTEMS WITH APPLICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Chuanxiao Zheng, Hao Lu, Yongzhong Xu, Yanlin Wang
Summary: This paper discusses the application of protective devices in electrical equipment, analyzes the potential hazard of short-circuit failure in these devices causing combustion. It proposes a new type of gas discharge tube (OGDT) with open-circuit failure capability and studies its structure, working mechanism, and the impact of short-circuit current and DC voltage on its response arc extinguishing time.
ELECTRIC POWER SYSTEMS RESEARCH
(2022)
Article
Automation & Control Systems
Qi Huang, Ling Luo, Yuan Zhang, Jichao Cao
Summary: Three phase brushless DC motor is widely used in the field of electric drive due to its high power density, simple structure and excellent speed regulation performance. Open-end winding brushless DC motor allows independent control of each phase winding and is suitable for low voltage and large current applications, with higher winding utilization rate.
INTERNATIONAL JOURNAL OF CONTROL AUTOMATION AND SYSTEMS
(2021)
Editorial Material
Physics, Multidisciplinary
Wen-Liang Xie, Xian-Yi Lv, Qi-Liang Wang, Liu-An Li, Guang-Tian Zou
Summary: The relationship between the spatial position of the diamond seed and growth mode is investigated in this study. By adjusting the spatial location, the growth mode and size of single-crystal diamond can be controlled, avoiding the formation of polycrystalline diamond rim.
Article
Materials Science, Multidisciplinary
Ze-Xin Wang, Jin-Wei Zhang, Wei-Gang Lv, Liang-Yu Chen, Fang Qi, Wei-Wei Chen, Sheng Lu
Summary: The study investigated the mechanism and coating characteristics of ZK60 deformed magnesium alloy treated by micro-arc oxidation (MAO), identifying key components and process conditions that are crucial for improving corrosion resistance.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Physics, Applied
Takahiro Bando, Yoshinori Saiki, Jumpei Kito, Yuki Hashimoto, Toru Harigai, Hirofumi Takikawa, Hiroki Gima, Hiroaki Sugita
Summary: In this study, a new type of deposition technique called filtered arc deposition (FAD) was developed, which effectively reduced the number of droplets on the deposited films compared to the traditional linear FAD.
JAPANESE JOURNAL OF APPLIED PHYSICS
(2023)
Article
Environmental Sciences
Tom M. Nolte, Guangchao Chen, Coen S. van Schayk, Kevin Pinto-Gil, A. Jan Hendriks, Willie J. G. M. Peijnenburg, Ad M. J. Ragas
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Chemistry, Physical
Kai Xu, Hao Liu, Yan-Chao Shi, Jing-Yang You, Xing-Yu Ma, Hui-Juan Cui, Qing-Bo Yan, Guang-Chao Chen, Gang Su
Article
Environmental Sciences
Jianchen Zhao, Yangjian Zhou, Chao Li, Qing Xie, Jingwen Chen, Guangchao Chen, Willie J. G. M. Peijnenburg, Ya-nan Zhang, Jiao Qua
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Cell Biology
Oyundari Amartuvshin, Chi-Hung Lin, Shao-Chun Hsu, Shih-Han Kao, Alvin Chen, Wei-Chun Tang, Han-Lin Chou, Dong-Lin Chang, Yen-Yang Hsu, Bai-Shiou Hsiao, Elham Rastegari, Kun-Yang Lin, Yu-Ting Wang, Chi-Kuang Yao, Guang-Chao Chen, Bi-Chang Chen, Hwei-Jan Hsu
Article
Environmental Sciences
Xin Li, Ming Yin, Xiong Chen, Minghao Yang, Fei Xia, Lifeng Li, Guangchao Chen, Peilong Yu, Chao Zhang
Article
Multidisciplinary Sciences
Yu-Hsuan Chen, Tzu-Yu Huang, Yu-Tung Lin, Shu-Yu Lin, Wen-Hsin Li, Hsiang-Jung Hsiao, Ruei-Liang Yan, Hong-Wen Tang, Zhao-Qing Shen, Guang-Chao Chen, Kuen-Phon Wu, Ting-Fen Tsai, Ruey-Hwa Chen
Summary: The study reveals that branched ubiquitination of VPS34 acts as a switch between UPS and autophagy, playing an important role in lipid metabolism in the liver.
NATURE COMMUNICATIONS
(2021)
Article
Telecommunications
Shujuan Wang, Qian Zhang, Guangchao Chen
Summary: The article discusses the importance of Internet of Vehicles (IoVs) in enhancing traffic safety and reducing losses from traffic accidents. By utilizing a cooperative video alert dissemination mechanism between vehicles, it effectively decreases accident video transmission delays and increases user satisfaction.
VEHICULAR COMMUNICATIONS
(2022)
Article
Environmental Sciences
Haiyang Liu, Xiuyi Hua, Ya-nan Zhang, Tingting Zhang, Jiao Qu, Tom M. Nolte, Guangchao Chen, Deming Dong
Summary: The electrocatalytic process effectively eliminated ampicillin-resistant Escherichia coli and corresponding resistance genes, reducing the dissemination risk of antibiotic resistance. The inactivation of AR E. coli was mainly due to damage to the cell membrane, while bla(TEM-1) was degraded through strand breaking in the electrocatalytic process.
ENVIRONMENTAL POLLUTION
(2021)
Article
Biochemistry & Molecular Biology
Fei-Yang Tzou, Jung-Kun Wen, Jui-Yu Yeh, Shu-Yi Huang, Guang-Chao Chen, Chih-Chiang Chan
Summary: Autophagy plays a crucial role in maintaining cellular homeostasis by degrading and recycling cytosolic components, and its disruption has been linked to neurodegenerative diseases. The fruit fly Drosophila has been used as a model system to study the role of autophagy in neurodegenerative diseases, providing valuable mechanistic evidence.
Editorial Material
Cell Biology
Yi-Ting Wang, Guang-Chao Chen
Summary: This study revealed the critical role of ATG9A ubiquitination in oxidative stress-induced autophagy, endocytic trafficking, and innate immunity. TRAF6 mediates ATG9A ubiquitination, promoting autophagy activation, while TNFAIP3/A20 acts as a negative regulator of oxidative stress-induced autophagy.
Article
Cell Biology
Yi-Ting Wang, Ting-Yu Liu, Chia-Hsing Shen, Shu-Yu Lin, Chin-Chun Hung, Li-Chung Hsu, Guang-Chao Chen
Summary: Excessive generation and accumulation of highly reactive oxidizing molecules can lead to oxidative stress and damage to cellular components. Autophagy, through degradation and recycling of damaged components, plays a role in reducing oxidative damage and maintaining redox homeostasis. This study reveals the coordination between TRAF6 E3 ubiquitin ligase and A20 deubiquitinase in regulating ATG9A ubiquitination and autophagy activation in response to oxidative stress. The findings shed light on the importance of K48/K63-linked ubiquitination of ATG9A in the regulation of oxidative stress-induced autophagy.
Article
Environmental Sciences
Wieneke Bil, Veronika Ehrlich, Guangchao Chen, Rob Vandebriel, Marco Zeilmaker, Mirjam Luijten, Maria Uhl, Philip Marx-Stoelting, Thorhallur Ingi Halldorsson, Bas Bokkers
Summary: Relative potency factors (RPFs) for immune suppressive effects of PFAS were successfully derived using data from rodents and humans.
ENVIRONMENT INTERNATIONAL
(2023)
Article
Chemistry, Analytical
Yue Liu, Xiaobing Chen, Jianchen Zhao, Wenjie Jin, Kun Zhang, Jiao Qu, Ya-nan Zhang, Guangchao Chen, Willie J. G. M. Peijnenburg
Summary: Organic compounds can generate hydroxyl radicals (OH) through excited triplet states, and investigating their generation mechanism and quantum yield is crucial for understanding indirect photochemical processes in the environment. In this study, the OH quantum yields of 20 organic compounds were determined experimentally and a quantitative structure-activity relationship (QSAR) model was developed to predict the yields for organic pollutants. The results indicate that electron distribution and electronegativity of organic compounds are the main factors determining OH generation.
ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
(2023)
Article
Engineering, Electrical & Electronic
Shujuan Wang, Guangchao Chen, Yanxiang Jiang, Xiaohu You
Summary: This paper proposes a Cluster-based Vehicle-to-Vehicle approach for Mixed Data Dissemination in urban scenario of Internet of Vehicles. The approach utilizes buses as cluster heads and analyzes multiple characteristics to achieve efficient data dissemination. It also introduces a new priority calculation method to meet the QoS requirements of emergency and service messages.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2023)
Article
Cell Biology
Sasikala Muthusamy, Hau-Ming Jan, Ming-Yen Hsieh, Soumik Mondal, Wen-Chun Liu, Yi-An Ko, Wei-Yuan Yang, Kwok-Kong Tony Mong, Guang-Chao Chen, Chun-Hung Lin
Summary: The study revealed that CAG enhances the internalization of H. pylori in host cells, disrupts autophagy flux, and reduces lysosomal biogenesis.
JOURNAL OF BIOMEDICAL SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Shuanghui Zeng, Xue Wang, Yunqian Zhang, Jiaojing Shao, Zhao Ding, Jie Zhao
Summary: A free-standing 3D core/shell composite material CNTs@Co9S8 on nickel mesh has been prepared using a simple two-step method. The composite material exhibits excellent conductivity and charge storage capability, making it a promising candidate for supercapacitor applications.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Marieta Belcheva, Georgi Georgiev, Boyko Tsyntsarski, Urszula Szeluga, Lyudmila Kabaivanova
Summary: This study successfully prepared new antibacterial materials by combining activated carbon with metal nanoparticles, taking advantage of the well-known antibacterial activity of metal nanoparticles. The obtained composites exhibited strong antibacterial effects against E. coli and S. aureus, with the antibacterial activity depending on the contact time, bacterial species, nature of the metal, and metal concentration. The findings provide novel materials with antibacterial properties for further development and potential application in hygiene devices.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
V. P. Madhurima, Kusum Kumari, P. K. Jain
Summary: In this study, carbon nanomaterials were synthesized using the arc discharge technique, with a focus on optimizing process parameters to improve yield and quality. The materials were characterized using various analytical tools, and their dye adsorption capabilities were evaluated. The results showed that carbon soot had better adsorption performance compared to carbon nanotubes, indicating the potential of these carbon nanomaterials for environmental remediation applications.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Zhaolong Sun, Bo Cui, Pingping Liang, Qimeng Liu, Nan Gao, Hongdong Li
Summary: This study explores the potential of hafnium (Hf) terminated diamond surfaces in achieving negative electron affinity (NEA). By using swarm-intelligence structural search and first-principles calculations, the researchers found that Hf-terminated diamond surfaces exhibit stable NEA properties and high thermal stability, making them promising candidate materials for electron emission applications.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
N. Soltani, N. Tavakkoli, E. Eslami, L. S. Mirmohammadi
Summary: In this project, a carbon paste electrode modified with graphene and ZnFe2O4 spinel nanoparticles (Gr/ZnFe2O4/CPE) was used to measure naproxen, and various electrochemical methods were used to investigate its behavior. By optimizing the parameters, good measurement results were obtained.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Xiwei Cui, Yue Qin, Xin Han, Huanyi Chen, Xinxin Ruan, Hui Zhang, Chengcheng Jiao, Rongqi Mao, Jinglin Hao, Sizhuang Zhao, Shuai Hou, Xiaoxuan Pian, Yandong Wang, Kazuhito Nishimura, Lifen Deng, Nan Jiang
Summary: This paper investigates the friction and wear behaviors of two types of polycrystalline diamonds against different materials. The results show that increasing surface roughness leads to an increase in coefficient of friction. The coefficient of friction and wear rate of ceramic Si3N4 balls are generally lower than those of steel GCr15 balls, except for one type of polycrystalline diamond. Transfer films of SiO2 and its hydrate are observed at the friction interface, which contribute to smoother friction and wear. Carbon-based transfer films are also identified, mainly catalyzed by residual cobalt in the polycrystalline diamonds, leading to a phase transformation.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Menglei Sun, Pengjun Li, Mao Wang, Yidan Liang, Xudong Yang, Shujie Pang
Summary: In this study, carbonized polymer dots were synthesized by a one-step hydrothermal method, and silver nanoclusters were synthesized by UV lamp irradiation. They were then self-assembled by electrostatic force to prepare a dual-emission fluorescent nanocomposite that responds to temperature changes. The nanocomposite showed two emission peaks and exhibited excellent linearity between 20°C and 80°C.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Mohamed J. Saadh, Durgesh Singh, Diego Mayorga, Anjan Kumar, Maria Albuja, Ahmad Ismael Saber, Mohammed Ahmed Mustafa, Yasser Elmasry, Noubu Sun
Summary: Based on density functional theory, it is found that the C3N monolayer has good adsorption capability for Hg0 and a short recovery time. This study suggests that the C3N monolayer is a promising adsorbent material for efficient control of gaseous mercury.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Rajendra Kumar Nare, Sivalingam Ramesh, Vijay Kakani, Yuvaraj Haldorai, Chandrasekaran Karthikeyan, Basivi Praveen Kumar, Nadavala Siva Kumar, Mohammad Asif, S. Naresh Kumar, D. Prakash Babu, K. Ramakrishna Reddy, Visweswara Rao Pasupuleti
Summary: This study examines the latest advancements in carbon nanotube (CNT) supercapacitors and related composites, aiming to identify strategies for enhancing their performance. The researchers used ultrasonication aided hydrothermal technique to synthesize a composite made of nitrogen doped carbon nanotubes and porous NiCo2O4 nanomaterial. The composite electrode exhibited excellent cycling stability and a rising specific capacitance, making it appealing for high-performance supercapacitor applications.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
D. Mary Deena, S. Arockia Anushya, A. Dhanusha, T. C. Sabari Girisun, A. Philominal
Summary: A single-beam Z-Scan experiment was conducted to investigate the nonlinear optical absorption and optical limiting properties of Bi2O3, rGO/Bi2O3, Bi2O3/WO3, and rGO/Bi2O3/WO3 nanostructures. The results showed that the synthesized nanostructures exhibited varying levels of nonlinear absorption, with bismuth-based nanostructures showing the lowest optical limiting threshold and a higher two-photon absorption coefficient. The presence of rGO contributed to the extended conjugation for charge transfer, while the strong UV-Visible absorption of Bi2O3 and WO3 led to a unique nonlinear optical response.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Weibing Guo, Yiren Hu, Tao Wang, Xiaoguang Chen
Summary: This study investigated the microstructure and forming mechanism of graphite/copper joints that were brazed using Ti-containing filler. The results showed that increasing the brazing temperature improved the heat transfer and tensile properties of the composites. Additionally, the composites exhibited high heat flux and faster heating rate compared to copper and aluminum.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Ming Li, ZhiWen Wang, Yu Teng, Hongyu Zhao, Bowei Li, Yang Liu, Shengxue Wang, Zhenze Yang, Liangchao Chen, Hongan Ma, Xiaopeng Jia
Summary: In the experiment, different Ni-content catalysts were used to synthesize diamond crystals, and the properties of the synthesized diamonds were analyzed. The results revealed that the Ni content in the catalyst affects the crystallinity of diamond crystals and the nitrogen crystallinity. The photoluminescence spectroscopy also showed that the diamond synthesized by using Fe-containing catalyst has specific NV-color center structure.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Ling-Feng Mao
Summary: This study proposes an LSTM model to predict the work function of adsorbed metal atoms on graphene, which can quickly screen surface structures with target work function, saving computing and time costs, and improving device performance.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Runzhou Xu, Yinshui Liu, Qian Cheng, Zhenyao Wang, Kai Ma, Peiling Ke, Yipan Deng
Summary: The wear resistance of 17-4PH stainless steel was significantly improved by depositing multi-layered Cr/CrC/DLC coating at wide temperature range. The coating exhibited excellent lubrication and protective properties, and the wear mechanism changed with increasing temperature. The tribochemical reaction during the wear process played a crucial role in the graphitization transformation and friction properties of the coating.
DIAMOND AND RELATED MATERIALS
(2024)
Article
Materials Science, Multidisciplinary
Xilong Guo, Jiaxin Song, Shanling Wang, Li Lei, Omololu Odunmbaku, Ayoub Taallah, Yi He, Aiqun Gu, Filippo S. Boi
Summary: The recent observations of superconductive-ordering in carbon-based systems consisting of rhombohedral stacking-faults, trilayer graphene (ABC-stacks) or dislocation-rich interfaces (pyrolytic graphite) have attracted significant attention. In this study, an unusual nucleation of rhombohedral stacking-faults in low-dimensional systems comprising of multiwall carbon nanotube (CNT) buckypapers was reported. The presence of sulfur doping resulted in a broad-band at the Raman shift from 1800 to 2000 cm(-1), indicating contributions arising from disorder-rich regions with rhombohedral stacking-order (ABC-stacks). These observations were further supported by X-ray diffraction and Rietveld refinements.
DIAMOND AND RELATED MATERIALS
(2024)
