Article
Computer Science, Hardware & Architecture
Loai G. Salem
Summary: Closed-form expressions for output dc voltage and load power of SC piezoelectric interface circuits are derived. A proposed analysis approach computes the equivalent impedance introduced by an interface circuit to a PT. The proposed model quantifies the improvement that a given interface circuit provides to the transducer source impedance independent of its load-controlled internal current and allows for determining the maximum achievable harvesting efficiency of an interface.
IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS
(2023)
Article
Engineering, Electrical & Electronic
Goncalo Rodrigues, Joao Silva, Hanna Busse, Diogo Caetano, Jorge Fernandes, Taimur Rabuske
Summary: In this paper, a fully integrated energy harvester with an on-chip coil and voltage multiplier rectifier is proposed and optimized using a genetic algorithm. The results show that the circuit achieves high efficiency and stable power transfer while occupying a small area and requiring low start-up power. Experimental results confirm the effectiveness of the proposed design.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2023)
Article
Computer Science, Information Systems
Florian Kolbl, Yannick Bornat, Jonathan Castelli, Louis Regnacq, Gilles N'Kaoua, Sylvie Renaud, Noelle Lewis
Summary: The paper introduces a stimulator capable of delivering arbitrary waveforms and suitable for non-conventional stimulation strategies, enabling optimized efficacy or energy efficiency for in vivo stimulation protocols. The system has a wide range of frequential content and high voltage compliance.
Article
Engineering, Electrical & Electronic
Wilmar A. P. Castiblanco, Ademir Toebe, Cassiano Rech
Summary: This article proposes a three-phase five-level switched-capacitor unidirectional rectifier that reduces the number of active switches while still synthesizing five voltage levels. It reduces the size and weight of the grid interface filter, enables self-voltage regulation of floating capacitors, reduces control system complexity, and generates smaller output DC voltages compared to conventional rectifiers.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Energy & Fuels
Wanglok Do, Kei Eguchi
Summary: A new switched capacitor converter (SCC) is proposed in this study, which is designed by parallel-and cross-connecting two Fibonacci topologies to achieve multilevel outputs and high power efficiency. Simulation results confirm that the proposed SCC can achieve over 90% power efficiency under 100 mW.
Article
Automation & Control Systems
Liangzong He, Dong Guo
Summary: This article proposes a new switched-capacitor-based half-wave rectifier topology to effectively address the issue of output power fluctuations in wireless power transfer systems. Compared with traditional methods, this topology uses fewer components, achieves soft-switching, while reducing costs, increasing power density, and efficiency.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Amjad Iqbal, Muath Al-Hasan, Ismail Ben Mabrouk, Abdul Basir, Mourad Nedil, Hyoungsuk Yoo
Summary: This article introduces an efficient WPTS for multipurpose biomedical implants, which includes an implantable antenna, rectifier, and WPT Tx. The system can transfer data and recharge devices simultaneously. The components operate at 1470 MHz, with the self-diplexing antenna also working at 915 MHz.
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
(2021)
Article
Engineering, Electrical & Electronic
Wenbo Wang, Junjun Deng, Deliang Chen
Summary: A voltage regulation method based on a combination of a semi-active rectifier (SAR) and a switched-controlled capacitor (SCC) is proposed for wireless power transfer systems. This method adjusts the SAR to regulate the voltage and introduces the SCC to compensate for impedance and satisfy the resonance condition at the receiver side. It achieves zero phase angle and minimizes reactive power losses. The control method enables single-side control and avoids wireless communication. Experimental results from a 3 kW prototype prove the effectiveness of the proposed method.
IET POWER ELECTRONICS
(2023)
Article
Engineering, Multidisciplinary
Emin Yildiriz, Salih Burak Kemer, Murat Bayraktar
Summary: An optimal inductive power transfer (IPT) system that meets the wireless charging requirements of an e-tricycle scooter has been designed. The system achieves high power transfer efficiency by accurately calculating the coil parameters. By using the optimal IPT system and minimizing the use of copper, efficient DC to DC efficiency is achieved.
ENGINEERING SCIENCE AND TECHNOLOGY-AN INTERNATIONAL JOURNAL-JESTECH
(2022)
Article
Chemistry, Physical
Ping Chen, Qiong Wang, Xiao Wan, Ming Yang, Changlu Liu, Chao Xu, Bin Hu, Jiexiong Feng, Zhiqiang Luo
Summary: This study presents a wireless-powered battery-free vagus nerves stimulator based on implantable high-performance hydrogel nanogenerators, showing promising application in anti-inflammatory therapy for sepsis. Development of programmable, battery-free neurostimulators for wireless electrical stimulation of nerve systems is an emerging research field.
Review
Engineering, Electrical & Electronic
Sourov Roy, A. N. M. Wasekul Azad, Somen Baidya, Faisal Khan
Summary: This article reviews advanced power conditioning techniques for harvesting energy from the human body and surrounding sources for biomedical implants and sensors. It emphasizes the necessity of power conditioning circuits for energizing implanted biomedical circuits, discusses challenges in power conversion modules, and explores the suitability of each technique within the human body. Suggestions for improving existing techniques and selecting suitable techniques for future biomedical applications are also provided.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2021)
Article
Chemistry, Analytical
Cihun-Siyong Alex Gong
Summary: Energy harvesting technology plays a crucial role in modern biomedical electronics, especially implantable applications. The conversion efficiency of electrical energy is essential for prolonging the battery life of implants. This study compares various techniques, with a focus on semiconductor-based circuits that can be integrated with tiny chips.
Article
Engineering, Electrical & Electronic
Minju Park, Kyeongho Eom, Han-Sol Lee, Seung-Beom Ku, Hyung-Min Lee
Summary: This article presents a stacked-switched-capacitor stimulation system that can provide up to 9V stimulation without the need for an external high-voltage supply. The system achieves high efficiency and fast charge balancing through the use of level-adaptive switch control and stimulus-synchronized charge balancing method.
IEEE JOURNAL OF SOLID-STATE CIRCUITS
(2023)
Article
Engineering, Electrical & Electronic
Yu Yang Xiao, Jun-Hui Ou, Shao Fei Bo, Wenquan Che, Xiu Yin Zhang
Summary: The key difficulty in designing a wideband rectifier is impedance matching. Traditional approaches are limited by the matching network and often result in larger rectifier sizes. This study explores the impedance characteristics of Schottky diodes and uses a simple matching network to achieve ultrawide bandwidth. The proposed design method is applicable to various diode models for different applications. Experimental results show a power conversion efficiency of over 50% in a frequency range of 0.1 to 4 GHz, with a relative bandwidth of 190% and a compact size of 1 x 1 cm(2). The peak efficiency reaches up to 74.9%.
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
(2023)
Article
Engineering, Electrical & Electronic
Ryo Matsumoto, Toshiyuki Fujita, Hiroshi Fujimoto
Summary: Efficiency of wireless power transfer systems can be improved by compensating for self-inductance variations with controlled switched capacitors. A proposed control scheme eliminates the need for wireless communication by separately controlling the capacitors on the transmitter and receiver sides. Experimental results show significant improvements in both ac/ac efficiency and dc/dc efficiency.
IEEE TRANSACTIONS ON POWER ELECTRONICS
(2023)
Article
Neurosciences
Hyun Soo Shim, Chilman Bae, Jigong Wang, Kyung-Hee Lee, Kali M. Hankerd, Hee Kee Kim, Jin Mo Chung, Jun-Ho La
Article
Engineering, Petroleum
Y. K. Cherivirala, H. Lyu, H. A. Alhowri, A. Babakhani
Article
Engineering, Electrical & Electronic
Hongming Lyu, Xiangyu Liu, Yuxiang Sun, Zhenqian Jian, Aydin Babakhani
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
(2019)
Article
Neurosciences
Kwan Yeop Lee, Chilman Bae, Dongchul Lee, Zachary Kagan, Kerry Bradley, Jin Mo Chung, Jun-Ho La
Article
Multidisciplinary Sciences
Hongming Lyu, Mathews John, David Burkland, Brian Greet, Allison Post, Aydin Babakhani, Mehdi Razavi
SCIENTIFIC REPORTS
(2020)
Correction
Multidisciplinary Sciences
Hongming Lyu, Mathews John, David Burkland, Brian Greet, Allison Post, Aydin Babakhani, Mehdi Razavi
SCIENTIFIC REPORTS
(2020)
Article
Anesthesiology
Kali Hankerd, Kathleen E. McDonough, Jigong Wang, Shao-Jun Tang, Jin Mo Chung, Jun-Ho La
Summary: Acute injury-induced pain can transition to chronic nociplastic pain, predominantly affecting women. Different intensities and timings of postinjury stimulation can lead to chronicization, with sexually dimorphic mechanisms maintaining the hypersensitivity state.
Article
Anesthesiology
Kali Hankerd, Ho Koo, Kathleen E. McDonough, Jigong Wang, Ramesh Pariyar, Shao-Jun Tang, Jin Mo Chung, Jun-Ho La
Summary: This study found that gonadal hormones are critical for the development and maintenance of peripherally maintained nociplastic pain state in females. Estradiol reconstitution before injury and post-injury stimulation can restore the development of this pain state, while G protein-coupled estrogen receptor antagonism can alleviate the pain. AITC-responsive afferents contribute to the maintenance of nociplastic mechanical hypersensitivity in females.
Article
Pharmacology & Pharmacy
Xiao-ming Wang, Jigong Wang, Valentina Fokina, Svetlana Patrikeeva, Erik Rytting, Mahmoud S. Ahmed, Jun-Ho La, Tatiana Nanovskaya
Summary: This study characterized the pharmacokinetic properties and post-operative analgesic efficacy of d9-methadone, a deuterated form of methadone. Deuteration improved the drug's absorption and distribution, reduced clearance, and decreased its ability to cross the blood-brain barrier. D9-methadone exhibited better safety and enhanced analgesic efficacy, primarily through activation of peripheral opioid receptors.
DRUG METABOLISM AND PHARMACOKINETICS
(2022)
Article
Immunology
Kathleen E. McDonough, Regan Hammond, Jigong Wang, Jessica Tierney, Kali Hankerd, Jin Mo Chung, Jun-Ho La
Summary: In this study, the researchers investigated the role of spinal microglia in driving the transition from acute injury-induced pain to nociplastic pain in males. They found that inhibition of spinal microglia prevented the vibration-induced transition to nociplastic pain, and this transition was mediated by the ATP-P2X4 pathway. Additionally, the researchers discovered that TNF-alpha, IL-1 beta, and IL-6 were involved in maintaining the nociplastic pain state in males.
BRAIN BEHAVIOR AND IMMUNITY
(2023)
Article
Engineering, Biomedical
Hongming Lyu, Aydin Babakhani
Summary: The research introduces a 13.56-MHz inductive power receiver system-on-a-chip for battery-less and ultra-low-power implantable medical devices. A real-time resonance compensation scheme is proposed to mitigate resonance variations, achieving high power transfer efficiency.
IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS
(2021)
Article
Engineering, Electrical & Electronic
Hongming Lyu, Zeyu Wang, Aydin Babakhani
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES
(2020)
Article
Engineering, Electrical & Electronic
Hongming Lyu, Zhenqian Jian, Xiangyu Liu, Yuxiang Sun, Aydin Babakhani
IEEE SENSORS LETTERS
(2019)
Article
Engineering, Biomedical
Hongming Lyu, Parag Gad, Hui Zhong, V. Reggie Edgerton, Aydin Babakhani
IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS
(2019)