[기계전공대학원 세미나]최창환교수(Stevens Institute of Technology)

1. 제 목 : Bioinspired Nanoengineered Surfaces for Multifunctional
Multiscale Applications

2. 연 사 : 최 창 환 교수(Stevens Institute of Technology)

3. 일 시 : 2012년 5월 18일 (금) 16:30-17:30

4. 장 소 : 301동 105호

5. 내 용 :
Nature such as plants, insects, and marine animals uses three-dimensional (3D) micro/nano-textured surfaces in their components (e.g., leaves, wings, eyes, legs, and skins) for multifunctional purposes such as self-cleaning, low-friction, antifouling, anti-icing, and anti-reflection. As scientific quests and engineering applications reach down to such a nanometer scale inspired by the nature, there is a strong need to fabricate 3D nanostructures with good regularity and controllability of their pattern, size, and shape. In many applications, furthermore, the nanostructures are not useful unless they cover a relatively large area and the manufacturing cost is within an acceptable range. The first part of this presentation describes effective 3D nano-patterning and fabrication methods to create uniform nanostructures of varying dimensions and shapes over a relatively large substrate area by exploiting several different approaches. Such large-area 3D nanostructures with modulated structural dimensions and geometries can open new application possibilities in many areas. The rest of the talk presents a few examples of novel applications using the 3D nanostructures, especially energy-related applications, including hydrodynamic drag reduction, anti-biofouling, anti-icing, and anti-corrosion. Future potential applications of the 3D nanostructures to the other areas will also be discussed, including energy conversion and harvesting.

6. 연사약력 :
Dr. Chang-Hwan ChoiBS (1995) and MS (1997) in Mechanical & Aerospace Engineering from Seoul National University in Korea. He also earned his MS in Fluids, Thermal, and Chemical Processes from Brown University in 2002. Dr. Choi received his PhD in Mechanical Engineering from the University of California at Los Angeles (UCLA) in 2006, specializing in MEMS/Nanotechnology and minoring in Fluid Mechanics and Biomedical Engineering. He has two-year (1996, 2000) work experience at Korea Aerospace Research Institute and three-year (1997-1999) teaching experience at Chandrakasem Rajabhat University in Thailand. He has now been working as an Assistant Professor in the Department of Mechanical Engineering at the Stevens Institute of Technology since 2007. His current research activities include large-area nanopatterning and 3D nanofabrication, microfluidic self-assembly of nanomaterials, fluid physics and heat transfer at nanoscale interfaces, nanofluidic energy harvesting, and cell-material interactions, funded by various federal agencies in US (NSF, DARPA, ONR, ARMY, and DOE) and industries. He has recently been named as a recipient of the 2010 Young Investigator Program (YIP) award by the US Office of Naval Research (ONR) for his efforts in the development of 3D nanostructures for efficient anti-corrosion surfaces and highlighted in Nature
(http://www.nature.com/naturejobs/2010/100520/pdf/nj7296-385a.pdf).

7. 문 의 : 기계항공공학부 김호영 교수 (hyk@snu.ac.kr)