A5101787764- Advanced Sensor and Energy Harvesting Materials
- Conducting polymers and applications
- Electromagnetic wave absorption materials
- Advanced Antenna and Metasurface Technologies
- Air Quality and Health Impacts
- Aerosol Filtration and Electrostatic Precipitation
- Food Quality and Safety Studies
- Dielectric materials and actuators
- Fungal and yeast genetics research
- Perovskite Materials and Applications
- Supercapacitor Materials and Fabrication
- Electromagnetic Compatibility and Measurements
- MXene and MAX Phase Materials
- Vehicle emissions and performance
- Genomics and Chromatin Dynamics
- Bone Tissue Engineering Materials
- Ecology and Conservation Studies
- 3D Printing in Biomedical Research
- Nutrition, Health and Food Behavior
- Gas Sensing Nanomaterials and Sensors
- Infection Control and Ventilation
- Plant-derived Lignans Synthesis and Bioactivity
- Fungal Plant Pathogen Control
- High voltage insulation and dielectric phenomena
- Protein Tyrosine Phosphatases
Chonnam National University
2025
Ewha Womans University
2025
Chungnam National University
2011-2024
Institut Pasteur Korea
2024
EuBiologics (South Korea)
2023
Kangwon National University
2012-2020
Food & Nutrition
2014
Chungbuk National University
2014
Korea Atomic Energy Research Institute
2011
Abstract Ultrafine particulate matter (PM) in indoor air has become a serious concern for public health. Therefore, there is growing interest filters that can be installed on the window frames of ordinary homes to improve quality by natural passive ventilation without using expensive forced circulation systems. Thus, these require high filtering efficiency and permeability visibility, which do not compromise original functionality windows. The developed this purpose date have demonstrated PM...
Performance enhancement of triboelectric nanogenerators (TENGs) has been largely limited by the relatively low output current density. Thus, extensive research efforts have made to increase In this respect, work presents a method effectively density TENGs adopting polarized ferroelectric polymers and MoS2 composite. Specifically, compositing bulk flakes with both Nylon-11 PVDF-TrFE, respectively, charge each charging surface was significantly increased. addition, proper polarization...
Ultrafine particulate matters (PMs) are an imminent threat to the human respiratory system, as their sizes comparable and even smaller than tissues. To cope with this situation, researchers have developed commercialized various personal dust proof masks. However, because of relatively thick filter membrane guarantee filtering efficiency, a huge pressure drop across active layer is inevitable breathing through it becomes uncomfortable. In work, we investigated performance electrospun...
This work presents a novel method for achieving lightweight electromagnetic interference (EMI) shielding materials with high EMI effectiveness (SE) through absorption-dominant mechanisms, utilizing only organic polymer nanofibers (NFs). Instead of incorporating high-density fillers, the approach involves adjusting concentrations iron chloride in NFs and subsequent vapor phase polymerization (VPP) to control density poly(3,4-ethylenedioxythiophene) (PEDOT) on surface polyvinylidene fluoride...
The current pipeline for new antibiotics fails to fully address the significant threat posed by drug-resistant Gram-negative bacteria that have been identified World Health Organization (WHO) as a global health priority. New antibacterials acting through novel mechanisms of action are urgently needed. We aimed identify chemical entities (NCEs) with activity against Klebsiella pneumoniae and Acinetobacter baumannii could be developed into treatment infections.
Recently, three-dimensional printing (3DP) technology has been widely adopted in biology and biomedical applications, thanks to its capacity readily construct complex 3D features. Using hot-melt extrusion 3DP, scaffolds for bone tissue engineering were fabricated using a composite of biodegradable polycaprolactone (PCL) hydroxyapatite (HA). However, there are hardly any published reports on the application fused deposition modeling (FDM) method feed filaments, which is most common method. In...
Recently, the inherent piezoelectric properties of 2D transition-metal dichalcogenides (TMDs) tin monosulfide (SnS) and disulfide (SnS2) have attracted much attention. Thus piezoelectricity these materials has been theoretically experimentally investigated for energy-harvesting devices. However, output performance SnS2- or SnS-based thin film nanogenerator (PENG) is still relatively low, fabrication process not suitable practical applications. Here we report formation SnS2/SnS...
A flexible piezoelectric composite is composed of a polymer matrix and ceramic fillers to achieve good mechanical flexibility processability. The overall performance largely determined by the filler inside. Thus, different dispersion methods additives that can promote ceramics optimal structures have been actively investigated. However, relatively few attempts made develop effectively contribute enhancement devices. In present work, we introduce fabrication devices Li-doped ZnO nanowires...
Abstract Extensive utilization of electronic devices and wireless equipment require human to take affirmative measures weaken unwanted electromagnetic wave radiations. Herein, a ferroelectric poly[(vinylidenefluoride‐ co ‐trifluoroethylene) (P(VDF‐TrFE)‐MXene]‐poly(3,4‐ethylenedioxythiophene) (PEDOT) multilayered film is developed that can increase interference (EMI) shielding performance through electrical polarization. The MXene encapsulated by P(VDF‐TrFE) matrix, which inhibits oxidation,...
A ZnO NR decorated PVDF-MXene composite NF EMI shielding material exhibiting superb absorption dominant SE, flexibility, and multi-functionality.
As the demand for wireless sensors and equipment is unprecedentedly increasing, interest in electromagnetic interference (EMI)-shielding materials that can effectively block accompanying also constantly increasing. In particular, flexible lightweight EMI-shielding exhibit high effectiveness (SE) have been more actively investigated as they are applicable to various applications. this work, we reported fabrication performance of conducting polymer nanofiber material, which was realized using...
According to clinical case reports, bacterial co-infection with COVID-19 can significantly increase mortality, Staphylococcus aureus (S. aureus) being one of the most common pathogens causing complications such as pneumonia. Thus, during pandemic, research on imparting air filters antibacterial properties was actively initiated, and several agents were investigated. However, inorganic nanostructures organic nanofibers (NFs) have not been investigated extensively. This study aimed demonstrate...
Abstract Recently, there is a growing demand of high‐performance, lightweight, and light‐permeable air filters due to severe pollution. Nanofiber have been actively investigated filter out ultrafine particulate matters (PMs) in air. Among various polymer nanofibers, Nylon‐6 nanofibers widely adopted fabricate owing their mechanical strength chemical stability. However, the filtering efficiency relatively low when it has high light transmittance. Thus, thick nanofiber layer required ensure...
<title>Abstract</title> Bone tissue is generally resilient and can self-heal, but critical-size defects (CSDs) with complex geometries cannot be repaired without clinical intervention. Customized scaffolds developed using three-dimensional (3D) printing techniques effectively repair complex-shaped CSDs. Adipose-derived stem cells (ADSCs), a type of mesenchymal cell (MSC), differentiate into osteoblasts exhibit osteoinductive properties. However, ADSC-single fabricated via two-dimensional...
To identify target genes against silver nanoparticles (AgNPs), we screened a genome-wide gene deletion library of 4843 fission yeast heterozygous mutants covering 96% all protein encoding genes. A total 33 targets were identified by microarray and subsequent individual confirmation. The pattern AgNPs was more similar to those AgNO3 H2O2, followed Cd As. toxic effect on attributed the intracellular uptake AgNPs, release Ag+, leading generation reactive oxygen species (ROS). Next, focused top...
There is a growing interest in window air filters to protect indoor quality from ultrafine particulate matter (PM) outdoor air. The for this purpose must achieve high filtering efficiency without compromising the original functions of window, such as permeability and visibility. Several meeting these requirements have been developed demonstrate PM2.5 efficiency. However, are installed outside or on screen guard, thereby requiring levels ultraviolet (UV), chemical, thermal resistance. These...
MXene (Ti3C2Tx), known for its exceptional electrical conductivity, unique two-dimensional structure, extensive surface functionality, and hydrophilicity, has emerged as a leading candidate electromagnetic interference (EMI) shielding applications. Despite these excellent characteristics, EMI materials based on mostly utilize the reflection mechanism, which may cause secondary interferences. This study introduces an approach to absorption-dominant materials. By engineering porous layer of...