[LECTURE] SPECIAL LECTURE(May.29 Thu. 16:00) (Sanghyuk Wooh, Chung-Ang University)
- SAINT
- Hit265
- 2025-05-23
05/29(목) 전문가초청특강은 중앙대학교 우상혁 교수님을 모시고 진행합니다.
관심있는 분들의 많은 참석 부탁드립니다.
ㅁ주제: Particle Adhesion on Thin Liquid Layer
ㅁ일시: 05/29(목) 16:00
ㅁ장소: 제2종합연구동 83188호
ㅁ약력:
○ Education & Academic Background
2005 Graduated from School of Chemical and Biological Engineering, Seoul National University, Korea
2008 Master of Engineering, School of Chemical and Biological Engineering, Seoul National University, Korea
2013 Doctor of Engineering, School of Chemical and Biological Engineering, Seoul National University, Korea
2014-2017.08 Postdoctoral Researcher, Department of Physics at Interfaces, Max Planck Institute for Polymer Research, Germany
2017 Group Leader, Max Planck Institute for Polymer Research, Germany
2017.09-2021.08 Assistant Professor, School of Chemical Engineering and Materials Science, Chung-Ang University
2021.09-present Associate Professor, Department of Chemical Engineering, Chung-Ang University
○ Award:ㅁ초록:
Keywords: Adhesion; Air Filter; Capillary Force; Surface Modification; Thin Liquid Film
Dust filters with small pores have been worldwide used to clean air and now are everywhere in our daily life. Dust, also called particulate matter (PM), are captured at the pore of the filters, therefore smaller pores result in higher PM capturing efficiency. However, air becomes more difficult to pass through the filter as the pores get smaller, which decreases the air permeability and increases the air pressure drop across the filter. This dilemma, caused by the low adhesion of solid PMs to the dry solid surface of the filters, has been one of the most important issue to be overcome on dry dust filter for several decades. Here, inspired by human nose filtering system with thin mucus coated nasal hairs, we create a dry dust filter having a thin non-volatile liquid layer at the surface of the pores. The strong adhesion of PM on liquid thin film improves the PM capturing efficiency without affecting the air permeability of the filter. The liquid thin film coated filter particularly exhibits outstanding dust filtering capability at fast speed filtering system with no re-dispersion of captured PMs. In addition, the suppressed PMs re-dispersion allows a new bi-directional dust filtering. The Particle Removing Oil-coated Filter (PRO) filter proposes a new paradigm of dust filtering and opens a new door for fast and efficient air cleaning.
