A5013188874- Advanced Sensor and Energy Harvesting Materials
- Conducting polymers and applications
- Tactile and Sensory Interactions
- Food Quality and Safety Studies
- Textile materials and evaluations
- Dyeing and Modifying Textile Fibers
- Supercapacitor Materials and Fabrication
- Gas Sensing Nanomaterials and Sensors
- Hand Gesture Recognition Systems
- Muscle activation and electromyography studies
- Education and Learning Interventions
- Nutrition, Health and Food Behavior
- Advanced Thermoelectric Materials and Devices
- Additive Manufacturing and 3D Printing Technologies
- Healthcare Education and Workforce Issues
- Antioxidants, Aging, Portulaca oleracea
- Electrospun Nanofibers in Biomedical Applications
- Phytochemicals and Antioxidant Activities
- Microbial Metabolism and Applications
- Interactive and Immersive Displays
- Neurological Disease Mechanisms and Treatments
- Robot Manipulation and Learning
- Pigment Synthesis and Properties
- Mycobacterium research and diagnosis
- Morinda citrifolia extract uses
Hanyang University
2018-2025
Kwangwoon University
2023-2024
Dankook University
2024
Hannam University
2018-2022
Keimyung University
2004-2022
Anyang University
2018-2021
Sejong University
2021
Seoul Institute
2018
Pusan National University Yangsan Hospital
2018
Samsung (South Korea)
2012-2015
A stretchable resistive pressure sensor is achieved by coating a compressible substrate with highly electrode. The contains an array of microscale pyramidal features, and the electrode comprises polymer composite. When pressure-induced geometrical change experienced maximized at 40% elongation, sensitivity 10.3 kPa−1 achieved.
Diverse signals generated from the sensing elements embedded in flexible electronic skins (e-skins) are typically interfered by strain energy through processes such as touching, bending, stretching or twisting. Herein, we demonstrate a bimodal sensor that can separate target signal mechanical integration of multi-stimuli responsive gate dielectric and semiconductor channel into single field-effect transistor (FET) platform. As service to our authors readers, this journal provides supporting...
We report the effects of various substrates and substrate thicknesses on electrospun poly(vinylidene fluoride) (PVDF)-nanofiber-based energy harvesters. The PVDF nanofibers showed an average diameter 84.6 ± 23.5 nm. A high relative β-phase fraction (85.2%) was achieved by applying voltage during electrospinning. prepared thus generated considerable piezoelectric potential in accordance with sound-driven mechanical vibrations substrates. Slide glass, poly(ethylene terephthalate),...
Abstract Mechanically adaptive electronic skins ( e -skins) emulate tactition and thermoception by cutaneous mechanoreceptors thermoreceptors in human skin, respectively. When exposed to multiple stimuli including mechanical thermal stimuli, discerning quantifying precise sensing signals from sensors embedded -skins are critical. In addition, different detection modes for rapidly adapting (RA) slowly (SA) skin simultaneously required. Herein, we demonstrate the fabrication of a highly...
Among transition metal oxides, vanadium oxides have received relatively modest attention for supercapacitor applications. Yet, this material is abundant, inexpensive and offer several oxidation states which can provide a broad range of redox reactions suitable operation. Electrochemical supercapacitors based on nanostructured oxide (V2O5) suffer from low energy densities as they surface area poor electrical conductivities. To overcome these problems, we developed layer by assembly (LBL)...
Wearable sensor systems with ultra-thinness, light weight, high flexibility, and stretchability that are conformally in contact the skin have advanced tremendously many respects, but they still face challenges terms of scalability, processibility, manufacturability. Here, we report a highly stretchable wearable textile-based self-powered temperature fabricated using commercial thermoelectric inks. Through various combinations poly(3,4-ethylene dioxythiophene)-poly(styrene sulfonate)...
Abstract Human joints have respective ranges of motion and joint forces corresponding to each kind joint; this necessitates considerations the characteristics human fabricate wearable strain sensors conformable body, capable precisely monitoring complex motions body. In present study, “all textile‐based highly stretchable structure” that is sensing (folding rotation) (finger, wrist, elbow, spine, knee) fabricated by optimizing patterns (straight, blind, zigzag) conductive yarns employed as...
In recent years, the use of functional textiles has attained attention due to their advantageous health and safety issues. Therefore, this study investigated flame retardancy on cotton (COT) polyester-cotton (PC) fabrics treated with different concentrations silica zinc nanoparticles through a sol-gel finishing technique. FTIR, SEM, TGA were conducted for characterization coated fabric samples. The FTIR SEM Pristine Treated Cotton PC illustrated that SiO2 (silica dioxide) ZnO (Zinc oxide)...
본 연구에서는 산채류 34종의 물 추출물과 메탄올 추출물을 제조한 후 항산화 활성을 탐색하여 유래 항산화물질을 탐색하고 기능성식품을 개발하기 위한 항산화능 우수 선발의 기초 자료를 제공하고자 하였다. 산채류시료 34종을 물과 추출하였을 때 추출 수율은 추출의 경우 4.6～34.6%이었고, 3.4～45.0%이었다. 총 폴리페놀 함량은 추출물에서 4.6～183.8㎎/g이고, 8.2～270.4 ㎎/g이었다. 돌단풍(Aceriphyllum rossii)이 각각 183.8, 270.1 ㎎/g의 가장 높은 함량을 보였고, 공통적으로 광대싸리(Securinega suffruticosa), 기린초(Sedum kamtschaticum), 까치수영(Lysimachia barystachys), 송이풀(Pedicularis resupinata)이 보였다. DPPH와 ABTS 라디칼 소거능은 까지수영, 돌단풍, 광대싸리, 기린초, resupinata), 승마(Cimicifuga...
Silicon/carbon (Si/C) nanocomposites have recently received much attention as Li-ion battery negative electrodes due to their mutual synergetic effects in capacity and mechanical integrity. The contribution of Si the total Si/C determines structural efficiency. Herein, we report on a multi-layered, one-dimensional nanostructure that exhibits theoretical specific nanocomposite. Concentrically tri-layered, compartmentalized, C-core/Si-medium/C-shell nanofibers were fabricated by triple coaxial...
Abstract There is a growing demand for wearable sensing devices to perceive and respond vital biological signals or human activities. In this work, carbon nanotube ink drop-coated textile resistive pressure sensor on typical three-dimensional (3D) spacer was developed detect health motion through scalable, cost-effective, simple processing. A 3D comprises two outer layers interconnected with monofilament robust compression resistance high air circulation open-hole structures, which...
This report describes a new twist-spinning process for the manufacture of piezoelectric yarn without need additional poling processes. Poly(vinylidene fluoride-trifluoroethylene) (PVDF-TrFE) nanofibers were first electrospun and organized into web structure. Using rotational translational motors, pulled stretched and, finally, twisted yarns. The crystallinity, β phase ratio, mechanical properties these twist-spun yarns characterized to assess effects operation on their microstructure...
Recently, wearable sensors, due to their ability exhibit characteristics, have been appealing for health monitoring through detection of human motions and vital signals. The development strain sensors with high sensing performance wearability has a great challenge date. In this study, textile-based sensor good skin affinity was fabricated simple fabrication process dip-coating 2D triaxial-braided fabrics using carbon ink then drying. macro crack aligned on the fabric high-density structure...
Puerarin is a flavonoid known as natural antioxidant found in the root of Pueraria robata. Its antioxidant, anticancer, and anti-inflammatory effects have attracted attention potential functional ingredient various bioindustries. However, puerarin has limited bioavailability owing to its low lipid solubility stability. Acylation proposed synthesis method overcome this limitation. In study, lipase-catalyzed acylation acyl donors was performed, enzymatic synthetic condition optimized. Under...
Abstract Wearable self‐powering sensors based on triboelectric nanogenerators (TENGs) emerging as a promising strategy for wide range of applications, such and energy‐harvesting systems, are widely used in healthcare displacement current utilized the driving force. Although TENG theory is rooted equation proposed by Maxwell, magnetic field created this often overlooked research. In work, an effective charge‐trapping method magnetization induced transition metal ion chelation reported. The...