Event Scheduled for Feb 14, 2014
Event: Steering structured surfaces: Harnessing geometry, mechanical and surface properties to form complex functional patterns by self-organization - presented by Sung Hoon Kang, Harvard University
Location: United Technologies Engineering Building (UTEB), room 476
Time: 10:00 am
Details of Event:
Mechanical Engineering Manufacturing Faculty Candidate Seminar
Sung Hoon Kang, School of Engineering and Applied Sciences; Harvard University
Friday, February 14, 2014
10:00-11:00 a.m. - UTEB 476
Steering structured surfaces: Harnessing geometry, mechanical and surface
properties to form complex functional patterns by self-organization
Nature uses structured surfaces for a wide range of functions such as sensing, adhesion, structural color, and self-cleaning. Although there have been many attempts to mimic them, little is known about how they self-organize into diverse and complex functional forms. To address this issue, I will focus on two
model systems - polymeric fibrous surfaces and cellular structures - and show how the geometry,mechanical and surface properties and external stimuli can be harnessed to induce the formation of a variety of complex patterns. In particular, I will show how the interplay between elasticity and adhesion in polymer nanofibers controls the shape, chirality, and hierarchy of the resulting assembled fiber arrays. I will also present how buckling of cellular structures can be exploited to reversibly form complex and
ordered patterns. Our studies provide underlying principles for the pattern formation by selforganization of bioinspired structured surfaces, and also offer a foundation for designing dynamic surfaces with multiple functionalities, including adhesive, optical, water-repellent, capture and release capabilities.
Dr. Sung H. Kang is currently a postdoctoral fellow in Materials Science and Mechanical Engineering at Harvard University working with Prof. Katia Bertoldi. He earned a Ph.D. degree in Applied Physics at Harvard University under the guidance of Prof. Joanna Aizenberg and M.S. and B.S. degrees in Materials Science and Engineering from MIT and Seoul National University, respectively. He has been
studying complex behaviors of material systems and structures with novel properties based on inspiration from nature as well as rational design followed by rapid prototyping using a 3D printer. By designing experimental model systems and/or using computational models, he has been working on identifying key design parameters of systems so that we can make desired structures and properties by tailoring behaviors of systems.
Throughout his career, Dr. Kang has co-authored 20 peer-reviewed papers in highly regarded journals including Science, Nature, Physical Review Letters, Advanced Materials, ACS Nano, and Nano Today,has given over 25 presentations, and has two pending patents. His work has been highlighted in numerous scientific and public media worldwide including New York Times, BBC, NPR, Discovery, the Times, Nature Physics, and Popular Science. His honors include the 2011 Materials Research Society Graduate Students Gold Award, First Place in Photography Category of the 2009 International Science and Engineering Visualization Challenge, and several poster awards and travel fellowships from
prestigious conferences/workshops. Outside lab, he is interested in communicating science and
technology to general public and fellow scientists/engineers through science-art and outreach activities.
Dr. Kang is a member of American Society of Mechanical Engineers (ASME), Materials Research
Society (MRS), and American Physical Society (APS).
Sponsored By: Mechanical Engineering
Pamphlet/Flyer: No Pamphlet/Flyer Available