A5045284639- Electric Motor Design and Analysis
- Polymer Nanocomposite Synthesis and Irradiation
- Advancements in Battery Materials
- Nanofabrication and Lithography Techniques
- Advancements in Photolithography Techniques
- Supercapacitor Materials and Fabrication
- Induction Heating and Inverter Technology
- Magnetic Bearings and Levitation Dynamics
- Surface Modification and Superhydrophobicity
- Graphene research and applications
- Advanced Battery Materials and Technologies
- Magnetic Properties and Applications
- Silicone and Siloxane Chemistry
- Ion-surface interactions and analysis
- Electrospun Nanofibers in Biomedical Applications
- Conducting polymers and applications
- Advanced Battery Technologies Research
- Microfluidic and Capillary Electrophoresis Applications
- Sensorless Control of Electric Motors
- Advanced Sensor and Energy Harvesting Materials
- Carbon Nanotubes in Composites
- Polymer Surface Interaction Studies
- Fiber-reinforced polymer composites
- biodegradable polymer synthesis and properties
- 3D Printing in Biomedical Research
Chungnam National University
2015-2024
Korea Electrotechnology Research Institute
2009-2024
University of Seoul
2023
Korea Research Institute of Chemical Technology
2022
University Research Co (United States)
2022
Korea Atomic Energy Research Institute
2006-2021
Hanyang University
2002-2016
Daejeon University
2016
Government of the Republic of Korea
2016
Dankook University
2016
Active, paper-based, microfluidic chips driven by electrowetting are fabricated and demonstrated for reagent transport mixing. Instead of using the passive capillary force on pulp to actuate a flow liquid, group digital drops transported along programmed trajectories above electrodes printed low-cost paper, which should allow point-of-care production diagnostic activities in future.
Oil spill rapidly destroys aquatic system and threatens humans, requiring fast efficient remedy for removal of oil. The conventional employs water-floating oil adsorbents whose volume should be large enough to accommodate all ingredients. Here, we suggest a new concept oil-spill remediation, which combines solar-driven evaporation light components simultaneous adsorption heavy components, namely, combined with (SEOA). To design photothermal absorbents the SEOA, designed carbonaceous fabrics...
Current research has focused on effective solutions to mitigate global warming and the accelerating greenhouse gas emissions. Compared most cooling methods requiring energy resources, passive daytime radiative (PDRC) technology offers excellent savings as it requires no consumption. However, existing PDRC materials encounter unprecedented problems such complex structures, low flexibility, performance degradation after stretching. Thus, this study reports a porous structured thermoplastic...
Invited for this month's cover is a combined work of the Korea Research Institute Chemical Technology together with Chungnam National University, University California, Irvine, and Chung-Ang University. The shows effective thermal management vehicle interior through wrapping stretchable passive radiative cooling film. Thermoplastic polyurethane (TPU) cooler film hierarchical porous structure dramatic effect compared to commercial paint in sunny, hot weather. Article itself available at...
Boron nitride nanotubes (BNNTs) have gained significant attention as a nanofiller additive to enhance the mechanical and thermal properties of polymer composites. However, despite advancements in BNNT large-scale synthesis methods, inherent hydrophobicity presence van der Waals attraction hinder their potential application due poor dispersion polar and/or nonpolar solvents. In this communication, facile deposition approach plant-based polyphenols intercalated with an amine source was...
One of the advantages interior permanent magnet synchronous motors compared to surface is its convenience when modifying air gap flux density magnets. This paper introduces a technique torque ripple reduction by shape rotor modify density. Three types surfaces, such as conventional round, slightly cut, and smoothed cut shape, are investigated. The average torque, ripple, cogging phase back-EMF, distribution analyzed through finite element analysis (FEA). validity proposed model also verified...
Silicon nanowires have been used in the development of ultrasensitive biosensors or chemical sensors, which is originated its high surface-to-volume ratio and function as field-effect transistor (FET). In this study, we developed an DNA-gold (Au) nanoparticle complex-modified silicon nanowire field effect (SiNW-FET) biosensor to detect matrix metalloproteinase-2 (MMP-2), has particular interest protein biomarker because relation several important human diseases, through enzymatic cleavage...
Brushless permanent magnet DC motors are being manufactured and used increasingly in everything from home appliances to automobiles due their inherent advantages. The merits of these could be enhanced further according another design approach method which alters the typically winding parts for low medium power range motors. This paper deals with high brushless motor traction a 48 V golf cart system. stator is designed segment rectangular copper maximize output within its limited dimensions....
This paper presents the novel method inductance calculation of a synchronous reluctance motor (SynRM). Synchronous inductances (Ld and Lq) are exceedingly important factor SynRM to drive. Because self axis current as well other current, d-axis q-axis varied. Using an equivalent circuit model for expressing variation, authors elicit suitable equation considering iron loss cross magnetic saturation. Parameters use gained by AC signal test.
Devices of IoT (Internet Things) are limited in resources such as CPU, memory etc. The LEA (Lightweight Encryption Algorithm) was standardized the encryption algorithm suitable for devices Korea 2013. However, is vulnerable to side-channel analysis attack using consumed electric power. To supplement this vulnerability, masking technique mainly used. case process, implementation time increased, losing characteristics speedup and lightening. This paper proposes a new faster countermeasure...
Silicon-based electrodes are widely recognized as promising anodes for high-energy-density lithium-ion batteries (LIBs). Silicon is a representative anode material next-generation LIBs due to its advantages of being an abundant resource and having high theoretical capacity low electrochemical reduction potential. However, huge volume change during the charge–discharge process electrical conductivity can be critical problems in utilization practical material. In this study, we solved problem...