A5002345637- Wireless Power Transfer Systems
- Energy Harvesting in Wireless Networks
- Wireless Body Area Networks
- Innovative Energy Harvesting Technologies
- RFID technology advancements
- Advanced Battery Technologies Research
- Underwater Vehicles and Communication Systems
- Advanced Sensor and Energy Harvesting Materials
- Advanced DC-DC Converters
- 3D IC and TSV technologies
- Corneal surgery and disorders
- Toxin Mechanisms and Immunotoxins
- Advanced Image and Video Retrieval Techniques
- Magnetic Field Sensors Techniques
- Electromagnetic Compatibility and Noise Suppression
- Speech and dialogue systems
- Cell Image Analysis Techniques
- Advanced Glycation End Products research
- Indoor and Outdoor Localization Technologies
- Plant tissue culture and regeneration
- MXene and MAX Phase Materials
- T-cell and B-cell Immunology
- Natural Language Processing Techniques
- Micro and Nano Robotics
- Spaceflight effects on biology
Yong In University
2024-2025
Korea Research Institute of Bioscience and Biotechnology
2025
Seoul National University
2025
Korea Advanced Institute of Science and Technology
2019-2024
Green Technology Center
2019-2022
Catholic University of Korea
2004
Seoul St. Mary's Hospital
2004
Abstract Purpose Corneal dysmorphologies (CDs) are typically classified as either regressive degenerative corneal dystrophies (CDtrs) or defective growth and differentiation-driven dysplasias (CDyps). Both eye disorders have multifactorial etiologies. While previous work has elucidated many aspects of CDs, such presenting symptoms, epidemiology, pathophysiology, the genetic mechanisms remain incompletely understood. The purpose this study was to analyze phenotype data from 8,707 knockout...
Wireless power transfer (WPT) technvvology can be employed for the wireless charging of unmanned underwater vehicles. However, in an WPT (UWPT) system, eddy current loss (ECL) caused by conductivity seawater must considered. Designs that do not properly consider ECL cause unpredictable efficiency decrease system. In this article, we propose efficient modeling UWPT system using Z-parameters. Utilizing electromagnetic analysis and two-port network analysis, derive impedance model coils...
The current 15-month coronavirus disease-19 (COVID-19) pandemic caused by SARS-CoV-2 has accounted for 3.77 million deaths and enormous worldwide social economic losses. A high volume of vaccine production is urgently required to eliminate COVID-19. Inexpensive robust platforms will improve the distribution vaccines resource-limited countries. Plant species offer such platforms, particularly through recombinant proteins serve as immunogens. To achieve this goal, here we expressed receptor...
Induction of oral tolerance has long been considered a promising approach to the treatment chronic autoimmune diseases, including rheumatoid arthritis (RA). Oral administration type II collagen (CII) proven improve signs and symptoms in RA patients without troublesome toxicity. To investigate mechanism immune suppression mediated by orally administered antigen, we examined changes serum IgG subtypes T-cell proliferative responses CII, generation IL-10-producing CD4+CD25+ subsets an animal...
This article proposes transmitter coils selection method for maximum power transfer efficiency in the wireless (WPT) system with multiple and a single receiver coil (MTSR). The proposed is divided into two main steps. First, criteria that can achieve are derived by analyzing relative magnitude of coupling coefficient between each coil. Next, calculating coefficients used only input current value presented. differs from previous studies it be applied when some transmission deactivated....
This article proposes a method of extracting the coupling coefficient and resonant frequency receiving (Rx) side wireless power transfer system with an <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">LCC</i> -series topology, using only information from transmitting (Tx) side. The proposed has three modes, which allow Tx coil Rx inductance to be extracted, respectively. can calculated while considering tolerance coils. senses current, is...
Wireless power transfer systems are increasingly used as a means of charging implantable medical devices. However, the heat or thermal radiation from wireless system can be harmful to biological tissue. In this research, we designed and implemented system-based device with low radiation, achieving 44.5% coil-to-coil efficiency. To suppress transmitting coil during charging, minimized ESR value coil. increase efficiency, ferrite film was applied on receiving part. Based analyses, fabricated...
Recently, maintenance applications around power lines have been actively studied. These usually supply through magnetic energy harvesting(MEH) to devices the line. A major challenge for practical MEH is overcome saturation, which can cause degradation of density under a wide current range in In this paper, we propose design methodology harvest maximized output by considering saturation effect. To consider model and saturable magnetizing inductance based on were comprehensively analyzed....
For the wireless power transfer (WPT) system in implantable medical devices (IMDs), human tissue is positioned between transmitting and receiving coils which are different from general WPT systems. Because this space where strongest electromagnetic field (EMF) occurs, it essential to reduce EMF at interspace exposure EMF. In paper, an out-of-phase coupled for IMDs proposed Considering efficiency (PTE) of system, a design procedure determining phase difference each capacitor analyzed...
This study investigates genes contributing to late-adult corneal dystrophies (LACDs) in aged mice, with potential implications for late-onset (CDs) humans. The International Mouse Phenotyping Consortium (IMPC) database, containing data from 8901 knockout mouse lines, was filtered include mice (49+ weeks) significant (P < 0.0001) CD phenotypes. Candidate were mapped human orthologs using the Genome Informatics group, expression analyzed via PLAE and a literature review prior associations....
In the wireless power transfer (WPT) system, input impedance characteristics change depending on load and air gap between coils. Changes in affect zero-voltage switching (ZVS) dead time related to stability, efficiency, electromagnetic interference. Existing studies lack dead-time analysis according operating conditions. addition, this resulted unnecessary dissipation as it cannot determine an appropriate compensation capacitance. Thus, is important analyze capacitance accordingly for ZVS....
This paper analyzes how over-coupled coils affect odd harmonic current and electromagnetic interference (EMI) in a wireless power transfer (WPT) system, proposes design considerations for series inductors to solve the EMI problem. When air gap of WPT system decreases below certain level are over-coupled, component input impedance currents increase. The increase components quickly aggravates issues. To problem additional were applied designing analyzed. inductors, efficiency, maximum...
In this paper, we propose a method of wirelessly torque transfer (WTT) and power (WPT) to drug pump, one implantable medical devices. By using the magnetic field generated by WPT system receiving coil at same time, applications that previously used from battery can be operated without battery. The proposed uses with material as motor, generate in desired direction transmitting coil. was analyzed topology generates constant current for stable generation. addition, detecting position...
Given the interest of researchers for wireless communications in electromagnetic (EM) shadow areas, a magnetic field communication has emerged to overcome RF challenges based on permeability characteristics. However, demerit short range. Considering this limitation, we have proposed GMI sensor-based receiver obtain immunity low-frequency noise and high sensitivity extension range previous studies. Further, paper designs system with including transmitter. Even though basic concept is taken...
For charging the battery of underwater applications, many researches on inductive power transfer (IPT) in conductive medium have been conducted. The are mainly focused analysis eddy current loss (ECL). In this paper, Z-parameters method is used to analyze characteristics coil impedance, efficiency and ECL by considering conductivity operating frequency. reflects as an additional resistive component coils, which very useful for system design process.
This paper proposes a control method for an active shield system using independent power source under misalignment conditions. The proposed controls the current strength and phase of shielding according to magnetic field leakage characteristics with high performance (SP) were determined by mutual inductance wireless transfer (WPT) coils. Additionally, we considered x y conditions analyzed SP efficiency (PTE). was verified through simulations experiments in terms PTE. confirmed that, due...
This paper proposes a shielding sensor (SS) coil to solve the misalignment issue and leakage magnetic field of wireless power transfer (WPT) system for electric vehicles (EVs). The must be solved because they can cause problems with efficiency reduction electronic device malfunction. To these problems, proposed SS coils are located over Tx coil. newly created mutual inductance between is used detect receiver in In addition, current phase adjusted through impedance control reduce field. were...
The paper proposed a PCB type coil with partially split conductors which have reduced resistance compared to conventional coil. In order design the coil, position where per unit length is relatively large in was analyzed by calculation. Then we total of coils according number divided fabricated for measurement. Resistance each measured using vector network analyzer. Experiment results show that has 28% addition, circuit simulation when are used 15 W class wireless power transfer system,...
The optimal transmitters (TXs) selection method is proposed to operate at maximum power efficiency in a wireless transfer (WPT) system using multi-TX. determined by the ratio of coupling coefficients between TXs and RX not affected other parameter. Moreover, criteria are generalized so that they can be applied according number TXs. 100W transferred 87.2% 76.7% with without method, respectively.
The wireless charging pad with multiple transmitter (TX) coils has the advantage of solving misalignment problem, high efficiency, and low leakage magnetic field. However, since multi-TX power transfer(WPT) system coupling coefficients between TX coils, k <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">TX</inf> . It changes resonance point causes a problem in that efficiency delivered to receiver are drastically reduced. This paper analyzes...
Recently, research on applying wireless power transfer (WPT) technology has been actively conducted to improve the stability and convenience of implantable medical devices (IMD) inserted into human body for direct treatment diseases. However, in case WPT system IMD, misalignment is likely occur due miniaturization receiving coil difficulty locating coil. In this paper, we propose a alignment method using permanent magnets (PM). The effect analyzed terms efficiency electromagnetic field...
The paper proposed a LCL-LCL topology for reduction of odd harmonic magnetic fields in over-coupled WPT system. has simple structure adding inductors series to the conventional series-series (SS) topology. higher input impedance at odd-harmonic frequencies than one, resulting small currents and fields. effectiveness is proven by simulation experiments.
An Automated guided vehicle (AGV) that transmit high power requires to be transmitted with efficiency lower loss. However, if the coupling coefficient is increased increase transfer efficiency, frequency splitting occurs, which adversely affects output and system stability. In this paper, a method mitigate in magnetic resonant wireless (WPT) for 1.5 kW AGV proposed. Frequency phenomena are alleviated by using matching capacitance of transmitter selected based on analysis phase reactance...
Recently, implantable medical devices (IMDs) have been developed and used in humans to increase the effectiveness convenience of devices. However, even case IMD, due limitation battery life, it is necessary replace through a short cycle reoperation. Research being conducted apply wireless power transfer (WPT) technology IMD reduce reoperation size. Due inserted into human body, there are many considerations WPT. In this paper, basic principle WPT design conditions for system explained. We...