A5101918710- Advanced biosensing and bioanalysis techniques
- Advanced DC-DC Converters
- Technology and Data Analysis
- Engineering Applied Research
- Biosensors and Analytical Detection
- Metal Alloys Wear and Properties
- Analog and Mixed-Signal Circuit Design
- Multilevel Inverters and Converters
- Metal and Thin Film Mechanics
- Educational Systems and Policies
- Magnetic Bearings and Levitation Dynamics
- Prosthetics and Rehabilitation Robotics
- Advancements in Semiconductor Devices and Circuit Design
- Advanced Chemical Sensor Technologies
- Semiconductor materials and devices
- Railway Systems and Energy Efficiency
- Electrochemical Analysis and Applications
- Carbon and Quantum Dots Applications
- Soft Robotics and Applications
- Electrochemical sensors and biosensors
- Electronic Packaging and Soldering Technologies
- Spacecraft and Cryogenic Technologies
- Analytical Chemistry and Sensors
- Electric Motor Design and Analysis
- Advanced Battery Technologies Research
Korea University
2018-2025
Naver (South Korea)
2023
Sungkyunkwan University
2021-2023
Korea Advanced Institute of Science and Technology
2007-2021
Korea Institute of Industrial Technology
2019
Tsinghua University
2019
Pusan National University
2015
Kyung Hee University
2015
Chungnam National University
2013
Korea Aerospace University
2007-2008
This letter presents a novel cable-driven hybrid origami-inspired actuator with load-bearing capability. In contrast to conventional origami, the origami layer of is characterized by resilient hinges and rigid facets. The layers are bonded assembled motors that apply tension via wires generate motion. exhibits high blocking force performance while preserving large deformability origami. To analyze structure, mathematical model built using kinematics elastic analysis. A tower multiple also...
In this study, we developed Nafion-blanketed bismuth nanoplates for the ultrasensitive detection of heavy metals in water. The Nafion-blanketing method was proposed owing to its selective adsorption cadmium and lead ions. addition, eco-friendly can be facilely fabricated by irradiation with ultrasonic energy. were used as electrochemical sensors their high affinity toward heavy-metal exhibited an outstanding electrical plasmon effect, which improved sensitivity anodic stripping voltammetry...
By using only one pneumatic line, an inchworm like micro robot for pipe inspection is invented. This paper based on drilling different-sized holes in two plates among three chambers. The rear clamp, the elongation module, and front clamp work sequentially as air flows to each chamber. It enables not generate locomotion, but also allow significant reduction of stiffness lines drag force due line. In addition, a with diameter 10mm could be accomplished owing its simple structure order operate...
DC-DC step-up converters have been widely utilized to efficiently convert a low input voltage $(V_{IN})$ higher output $(V_{OUT})$ in USB- or battery-powered mobile systems, including battery chargers (10 13V), OLED drivers (5 etc. The conventional boost converter (CBC) needs the use of high-voltage (HV) devices such as LDMOS withstand its high V <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">OUT</inf> . Typically, HV larger active area and...
This paper proposes a high-efficiency three-level boost converter that ensures reliable operation in wide input and output voltage ranges for light-emitting diode (LED) drivers. The proposed adopts robust auto calibration using half of the ( <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">V<sub>OUT</sub></i> ) flying capacitor xmlns:xlink="http://www.w3.org/1999/xlink">V<sub>CF</sub></i> self-balancing without requiring additional bulky...
An output capacitor-less low dropout regulator (LDO) has been used widely in portable and IoT devices since it can generate an accurate voltage (V <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">OUT</inf> ) with ripple, simple structure, cost. The LDO embedded a system-on-chip (SoC) also requires fast transient operation to handle wide range of load current (I xmlns:xlink="http://www.w3.org/1999/xlink">LOAD</inf> ). However, pole frequency...
It is important to increase the production efficiency of large wind power generators. Because magnet segmentation reduces size each magnet, segmented magnets can be fabricated relatively easily. also features advantages reducing cogging torque and improving permanent-magnet machines by decreasing eddy-current loss. Despite this benefit, a disadvantage exists as side could detached from rotor because magnetic force between magnets, such attractive or repulsive force. Hence, in study, we will...
The ever-increasing phishing campaigns around the globe have been one of main threats in cyber security. In response, global anti-phishing entity ( <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">e.g</i> ., APWG) collectively maintains up-to-date blacklist database eCrimeX) against campaigns, and so do modern browsers Google Safe Browsing). However, our finding reveals that such a mutual assistance system has remaining blind spot when...