한양대학교 · Materials Science
Gi Hun Seong 교수의 연구실은 마이크로플루이딕 시스템과 나노소재를 융합한 고감도 분석 기술 및 촉매 반응 제어 기반의 생체분석 및 환경 모니터링 기술을 핵심 연구 분야로 삼고 있습니다. 특히 마이크로베드 기반 연속유속 반응기, 나노구조 촉매(나노제모이즈), 전기화학적 센서를 활용한 중금속 및 생체 분자 감지 기술 개발에 주력하고 있습니다. 다양한 나노소재(예: ZnO 나노막대, AuNP-SWCNT, RhPt 나노입자)의 형상 제어와 전기화학적 특성 조절을 통해 고성능 센서 및 촉매 시스템을 설계하고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
This paper describes a microanalytical method for determining enzyme kinetics using a continuous-flow microfluidic system. The analysis is carried out by immobilizing the enzyme on microbeads, packing the microbeads into a chip-based microreactor (volume approximately 1.0 nL), and flowing the substrate over the packed bed. Data were analyzed using the Lilly-Hornby equation and compared to values obtained from conventional measurements based on the Michaelis-Menten equation. The two different enz
A strategy for efficiently mixing solutions and carrying out multistep catalytic reactions in microfluidic systems is described. The approach involves immobilizing catalysts on microbeads, placing the beads into well-defined microreactor zones, and then passing reactants through one or more of the reactor zones to yield products. The catalyst-modified beads effectively mix reactants and increase the effective surface area of the channel interior, both of which improve reaction velocities compare
This paper describes fabrication of serial microchamber arrays within the channels of a microfluidic device. The chambers are defined using a combination of weirs and UV-cross-linked hydrogel plugs (poly(ethylene glycol) diacrylates). This approach permits the microchambers to be addressed by pump-driven pressure in one dimension and by electrophoresis in the other. The function of the device is demonstrated by detecting DNA targets. Single-strand DNA (ssDNA) probes labeled with biotin were immo
We controlled the morphologies of zinc oxide (ZnO) nanostructures on single-walled carbon nanotube electrodes by an electrochemical deposition method and investigated the dependence of the electrocatalytic characteristics toward hydrazine on the different morphologies. ZnO nanorods provided high electrocatalytic activity with unique electrochemical behaviours, associated with the H(+) ion generated by the electro-oxidation of hydrazine.
