1. 제  목 : How can we make three-dimensional actuating hydrogel films?

2. 연  사 : 김정욱 교수 (서강대학교 화공생명공학과)

3. 일  시 : 2014년 2월 5일 13:30-14:30

4. 장  소 : 301동 117호

5. 내  용 : Soft materials, such as polymer, colloidal suspension, gel, liquid crystal, or biological materials, share a common feature in that their physical behaviors occur at an energy scale ~ kT. Among these materials, hydrogels are characterized by their solid-like behaviors despite the majority of volume being occupied by water. Owing to such qualities, i.e. being soft, physically structured, and high water content, hydrogels can undergo a large volumetric change through a delicate balance between entropy and enthalpy, which are affected by a change in environmental conditions. Here, I will describe how we use such stimuli-responsive hydrogels to create dynamic, shape-controllable hydrogel micro-systems. Based on application of mechanical constraints on swelling of hydrogel, we created 1) hydrogel sheets that buckle into desired 3D morphologies through a locally differential swelling (Science, 2012, 335, 1201), and 2) dynamic surfaces that display or sequester surface biomolecular patterns (Nature Materials, 2010, 9, 159).

6. 약  력 :
 서울대학교 화학생명공학부 졸업 (학부, 2006)
 University of Massachusetts Amherst, Polymer Science and Engineering 졸업 (석/박사, 2011)
 박사후과정: MIT, Chemical Engineering (2011-2012)
 서강대학교 화공생명공학과 조교수 (2012-현재)

7. 문  의 : 기계항공공학부 교수 김 호 영 (☏ 02-880-9286