Article
Engineering, Electrical & Electronic
Pengyuan Ren, Wenjie Chen, Xingwei Huang, Yuxuan Chen, Yun Wang, Xu Yang
Summary: In this article, a novel air-gapless core structure based on magnetic building blocks (MBBs) is proposed to reduce the fringing and proximity effects in high-frequency planar inductors. The optimized core structure can achieve a 46% reduction in ac resistance, which has been verified through theoretical analysis and finite-element simulations.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2023)
Article
Materials Science, Characterization & Testing
F. A. Doronin, Yu Rudyak, G. O. Rytikov, A. G. Evdokimov, V. G. Nazarov
Summary: The paper demonstrates that by modifying the surface structure of PET substrates through multi-gas-phase treatment, the adhesion and wetting properties of PLA filament are significantly improved, enabling the production of planar microfluidic devices on them. Experimental results confirm significant changes in the chemical composition and nanorelief of PET substrates' surfaces, affecting the adhesion and wetting properties of the filament and enhancing the functional characteristics of the microfluidic devices.
Article
Engineering, Electrical & Electronic
Zheyuan Yu, Xu Yang, Gaohao Wei, Yongxing Zhou, Yao Xiao, Mengjie Qin, Jiarui Wu, Kangping Wang, Wenjie Chen, Laili Wang
Summary: This article improves the existing 1-D copper loss model, proposes the pyramid theorem, and designs a novel PCB inductor-winding structure based on this theorem. Through experiments, it is demonstrated that the pyramid winding has lower copper loss, fewer copper layers, smaller size, and lower cost.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Hsing- Hsiang, Shau-Guang Fan, Wen-Hsi Lee
Summary: A planar inductor with excellent magnetic characteristics was successfully prepared by screen printing high solid content iron-based alloy magnetic pastes onto copper-clad laminates, followed by cold-isostatic pressing to increase packing density and adding an insulating layer using epoxy resin. Using a central column filled with magnetic paste, the inductance, magnetic flux channeling, and storage energy of the planar inductor were increased. The accuracy and reliability of the proposed method were validated through simulation and experimental results comparison, with deviations within 6%.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Engineering, Electrical & Electronic
Chung-Yuan Liu, Hsiang-En Ding, Shih-Hsien Wu, Tzong-Lin Wu
Summary: This article demonstrates an extremely low-loss and high-speed millimeter-wave interconnect based on hollow dielectric waveguide (HDW), with only 0.68 dB transition loss at 58 GHz. The proposed technique provides a potential solution for high-throughput communication in 5G/6G networks.
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
(2021)
Article
Engineering, Environmental
Iftikhar A. Soomro, Anser Ahmad, Rana H. Raza
Summary: This paper introduces a robust PCB classification system based on computer vision and deep learning, achieving high accuracy in e-waste recycling sorting by utilizing datasets under various conditions and a deep learning model.
RESOURCES CONSERVATION AND RECYCLING
(2022)
Article
Engineering, Electrical & Electronic
Satyaki Mukherjee, Yucheng Gao, Dragan Maksimovic
Summary: The article explores the use of orthogonal air-gap technique in high-frequency inductors to reduce ac resistance, demonstrating significant reduction in inductor losses compared to standard air gap designs.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Engineering, Environmental
Yanhe Nie, Yunxiang Jiang, Qiang Wang, Jianghao Chen, Sen Wang, Qike Zhang, Fumitake Takahashi
Summary: This study proposes the use of coal gasification slag (CGS) as an adsorbent for recovering gold from printed circuit boards (PCBs). The CGS was found to efficiently adsorb AuCl4- in solution, and the adsorption process was not significantly affected by pH, stirring speed, and temperature. The results suggest that the gold adsorption process is controlled by a chemical process and can be better described by pseudo-second-order kinetics and the Langmuir model. The recovery of gold by CGS not only helps to recycle solid waste but also enables the recycling of valuable resources in waste PCBs at a low cost.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Manufacturing
Chenglin Yi, Rebecca Fedderwitz, Donghun Park, Chao Ding, Guo-Quan Lu, Jason Fleischer, Philip Li, Peter Kofinas, Siddhartha Das, Daniel R. Hines
Summary: This study presented the design, fabrication, and characterization of fully 3-D printed conical inductors for broadband applications, showcasing superior performance compared to commercial products by utilizing different core materials.
ADDITIVE MANUFACTURING
(2021)
Article
Materials Science, Multidisciplinary
Nireeshma Ulkundakar, Rajesh Savarapu, Pratap Kollu
Summary: This paper presents the performance characteristics of a non-spiral planar excitation and pick-up micro-coils fluxgate sensor with a NiFe magnetic rod core. The sensor's performance is simulated using Ansys Maxwell's software. A simple and cost-effective fabrication method is implemented using Printed Circuit Board technology. The sensor demonstrates earth magnetic field strength detection.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Wenxia Sima, Binyang Zou, Ming Yang, Francisco de Leon
Summary: A new method for measuring the magnetizing inductances of single-phase two-winding transformers is proposed in this letter, utilizing a dc source and an air-core inductor to significantly reduce costs and equipment size. This method has been experimentally validated and simulated with finite elements for two single-phase transformers.
IEEE TRANSACTIONS ON POWER DELIVERY
(2021)
Article
Chemistry, Multidisciplinary
Chen Lin, Teng Zhan, Junxi Wang, Jinmin Li, Zhiqiang Liu, Xiaoyan Yi
Summary: Conventionally, copper is preferred over aluminum for fabricating integrated inductors on silicon or sapphire substrates due to its lower resistivity. However, upon investigation, aluminum-based metal multilayers show competitive ability in fabricating thin-film inductors on sapphire compared to copper-based counterparts, attributed to degradation in electrical conductivity. Additionally, a six-element equivalent physical model is proposed to simplify characterization of on-chip inductors and validated with measurement results.
APPLIED SCIENCES-BASEL
(2021)
Review
Nanoscience & Nanotechnology
Hoa Thanh Le, Rubaiyet I. Haque, Ziwei Ouyang, Seung Woo Lee, Shelley I. Fried, Ding Zhao, Min Qiu, Anpan Han
Summary: This review provides a comprehensive overview of state-of-the-art MEMS technologies for inductor fabrication, presents recent advances in 3D additive fabrication technologies, and discusses the challenges and opportunities of MEMS inductors for two emerging applications, namely, integrated power electronics and neurotechnologies.
MICROSYSTEMS & NANOENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Weifang Chen, Yanjun Chen, Yongkai Shu, Yinan He, Jinbo Wei
Summary: The non-metallic fraction of waste printed circuit board (WPCB) was found to be valuable after metal recovery, rich in organic polymer and inorganic materials which could serve as a source of chemicals and fuel. Through pyrolysis under different conditions, solid, liquid, and gaseous products were collected and characterized, showing that the products contained phenol, alkylated phenols, CO2, CH4, and H2. Pyrolysis pathways of WPCB disintegration were proposed based on the compositions of the products.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Biotechnology & Applied Microbiology
Sadegh Ghorbanzadeh, Seyed Morteza Naghib, Ali Sadr, Fatemeh Molaabasi, Wei Zhang
Summary: This article introduces the development of high performance and cost-effective gold screen-printed electrodes (SPEs) for electrochemical biosensing platforms. The article discusses the development procedure of the gold SPEs and presents their positive performance in electrochemical parameters. The study also demonstrates the successful fabrication of a simple breast cancer cell detection platform using the gold SPEs, showing cost-effectiveness and a linear calibration curve.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)