A5040981809- Conducting polymers and applications
- Advanced Sensor and Energy Harvesting Materials
- Supercapacitor Materials and Fabrication
- Nuclear Physics and Applications
- Particle accelerators and beam dynamics
- Radiation Therapy and Dosimetry
- Tactile and Sensory Interactions
- Reservoir Engineering and Simulation Methods
- Ear and Head Tumors
- Ion-surface interactions and analysis
- Hydraulic Fracturing and Reservoir Analysis
- Covalent Organic Framework Applications
- Integrated Circuits and Semiconductor Failure Analysis
- biodegradable polymer synthesis and properties
- Salivary Gland Tumors Diagnosis and Treatment
- Plasma Diagnostics and Applications
- Spacecraft and Cryogenic Technologies
- Enhanced Oil Recovery Techniques
- Chemical Synthesis and Analysis
- Supramolecular Self-Assembly in Materials
- Neural and Behavioral Psychology Studies
- CO2 Sequestration and Geologic Interactions
- Advanced Malware Detection Techniques
- Sport Psychology and Performance
- Mass Spectrometry Techniques and Applications
Seoul National University
2010-2024
Yonsei University
2020
Chosun University
2017-2019
Government of the Republic of Korea
2017
Gwangju University
2017
Institute for Basic Science
2014
National Cancer Center
2011
Seoul Media Institute of Technology
2004
Abstract Triboelectric energy harvesting has been applied to various fields, from large-scale power generation small electronics. is generated when certain materials come into frictional contact, e.g., static electricity rubbing a shoe on carpet. In particular, textile-based triboelectric energy-harvesting technologies are one of the most promising approaches because they not only flexible, light, and comfortable but also wearable. Most previous generators (TEGs) generate by vertically...
In the proposed fiber-based single-electrode triboelectric nanogenerator (FSTENG), energy was generated from contact between human skin and silicone rubber.
Energy-harvesting technologies that generate continuous power from human movement by wearable devices have attracted increasing attention and demand. Flexible fibers or cylindrical triboelectric nanogenerators with a 1-dimensional structure the advantage of being mass-producible. In this Article, we propose core–shell helical-structured nanogenerator (CCTENG) can various deformations movements. Unlike conventional leverage limited motion, CCTENGs energy deformations, including compression...
Textile or woven-structured triboelectric nanogenerators (TENGs) convert the mechanical energy generated from human motion into electrical and they can be used as efficient power sources for wearable portable devices. However, existing weaving-based TENGs require multiple strands of fibers have limited stretchability. In this paper, we propose highly stretchable flexible single-strand fiber-based (FW-TENGs). The proposed FW-TENGs generate ∼34.4 µW/cm2 continuous contact separation skin...
Abstract Yeongil bay is a basin located in Pohang, South Korea. Numerous projects and researches have been conducted for carbon capture storage bay. The objectives of most studies were shifted from enhancing injection efficiency to ensuring safety dioxide (CO2) after the Pohang earthquake occurrence 2017. In this research, we present stepwise CO2 scenario, which gradually increases rate during early stage period. Furthermore, conduct sensitivity analyses on an optimal based variations...
The crystallization-driven self-assembly of the blends all-conjugated block copolymers poly(3-hexylthiophene) (P3HT) and poly(3-ethylhexylthiophene) (P3EHT) results in cross-linking one-dimensional nanowires P3HT-b-P3EHT, which is achieved by intercalating P3HT-b-P3EHT-b-P3HT into nanowire cores. micellar networks constitute flexible porous materials that conduct electricity upon doping.
Polyesters exhibiting a protein-like absolute atomic precision have unlimited potential for application as biomaterials and polymeric materials. Herein, we report the synthesis of enantiomeric ω-hydroxy acids (OHAs) from terminal epoxides alkenes starting Our synthetic strategy allows library OHAs with well-defined composition (carbon number), stereochemical configuration, substituent chemistry. These monomers can serve building blocks preparation discrete sequence-defined polyesters,...
Presents a classification of known attacks in online games and provide security solutions against them. While previous works just presented case by case, this paper newly classifies objectives methods. Moreover, presents each four layers: client, server, network, environment. Through systematic classification, can be provided more efficiently even unknown future attacks.
Woven -structured or textile-based triboelectric nanogenerators (TENGs) can convert mechanical energy generated from human activities into electrical energy, which then be used as an efficient power source for portable and wearable devices. However, previously developed woven-structured TENGs have poor stretchability, fibers with multiple strands are required weaving. In this paper, we propose a fiber-based TENG (WTENG) having high elasticity flexibility. The proposed WTENG generates output...
Superferric quadrupole magnets to be used for in-flight fragment separator have been designed. A magnet triplet beam focusing is placed in a cryostat together with superconducting correction coils. To maximize acceptance of rare isotope beams produced by projectile fragmentation, it essential use large-aperture magnets. The pole tip radius 17 cm the current design, and we tried enlarge aperture 3D analysis on magnetic fields. In front end separator, where target dump are located, plan two...
Abstract Well placement optimization is a crucial task in terms of oil and gas recovery economics the field development plan. It poses significant challenges due to multitude local optima, which demand massive computational cost for global search algorithms. To address this, many proxy models have been applied replacing reservoir simulations cases. Among these, convolutional neural network-based utilizing streamline time flight maps as input demonstrated excellent performances. Nevertheless,...
An accelerator mass spectrometer based on a cyclotron has been developed, and prototype of the injection beam line constructed. Mass resolution is designed to be over 4000. A sawtooth RF buncher in flat‐topping system for were utilized enhance transmission efficiency, which primary factor improvement compared previous spectrometers. The comprises an ion source, Einzel lens, buncher, 90 ° dipole magnet slit box containing diagnostic devices. carbon was measured at location box, phase spaces...
With the depletion of energy sources and an increase in demand for portable electronic devices, harvesting is receiving more attention. In particular, fiber/textile triboelectric harvesters are flexible lightweight, thus, they easy to wear on human body. Traditional fiber-based nanogenerators have active material electrodes placed outside fiber, causing problems such as short-circuiting, when made a textile. To solve this problem, cylindrical-fiber-based nanogenerator (CFTENG), with inside...