Hyoun Woo Kim
Hanyang University · 工学
研究室紹介
Professor Hyoun Woo Kim's research lab specializes in the design and fabrication of advanced 2D nanomaterials and hybrid nanostructures for next-generation sensing and energy applications. The lab focuses on developing high-performance gas sensors using MXenes, graphene, and metal oxide nanowires, emphasizing tunable electronic properties, enhanced surface reactivity, and scalable fabrication techniques. Key research directions include nanomaterial synthesis, resistive gas sensing mechanisms, and the integration of 2D materials for environmental monitoring and wearable electronics. The lab also explores the application of nanomaterials in sustainable technologies, such as water cycle monitoring using remote sensing data.
Research Overview
Research Output Trend
Figures are computed from collected data and may differ slightly.
Selected Papers
15Graphene-based fibers (GFs) have aroused enormous interest in portable, wearable electronics because of their excellent mechanical flexibility, electrical conductivity, and weavability, which make them advantageous for wearable electronic devices. Herein, we report the development of metal binder-free Ti3C2Tx MXene/graphene hybrid fibers by a scalable wet-spinning process. These hybrid fibers exhibit excellent mechanical and electrical properties for applications in flexible wearable gas sensors
Sensing of benzene, toluene and xylene gases using resistive-based gas sensors.
Nitrogen (N)-doped graphene with different atomic percentages (2.3–4.7 at%) of N has been synthesized by thermal annealing of reduced graphene oxide (RGO) in ammonia gas for different times. The effects of annealing time on the structure, electrical and optical properties of N-doped graphene have been systematically investigated by using various analytical techniques. XPS, FTIR, Raman, and XRD studies show that there is a gradual structural change in N-doped graphene sheets with increasing annea
We obtained extremely high and selective sensitivity to NO 2 gas by fabricating graphene–SnO 2 nanocomposites using a commercial microwave oven. Structural characterization revealed that the products corresponded to agglomerated structures of graphene and SnO 2 particles, with small secondary SnO x ( x ≤ 2) nanoparticles deposited on the surfaces. The overall oxygen atomic ratio was decreased with the appearance of an SnO x ( x < 2) phase. By the microwave treatment of graphene–SnO 2 nanocomposi
SnO2-ZnO composite nanofibers fabricated using an electrospinning method exhibited exceptional hydrogen (H2) sensing behavior. The existence of tetragonal SnO2 and hexagonal ZnO nanograins was confirmed by an analysis of the crystalline phase of the composite nanofibers. A bifunctional sensing mechanism of the composite nanofibers was proposed in which the combined effects of SnO2-SnO2 homointerfaces and ZnO-SnO2 heterointerfaces contributed to an improvement in the H2 sensing characteristics. T
We propose a novel approach to improve the gas-sensing properties of n-type nanofibers (NFs) that involves creation of local p-n heterojunctions with p-type reduced graphene oxide (RGO) nanosheets (NSs). This work investigates the sensing behaviors of n-SnO2 NFs loaded with p-RGO NSs as a model system. n-SnO2 NFs demonstrated greatly improved gas-sensing performances when loaded with an optimized amount of p-RGO NSs. Loading an optimized amount of RGOs resulted in a 20-fold higher sensor respons