Sung Kwon Cho,
Associate Professor,
University Of Pittsburgh
Sung Kwon Cho received the B.S., M.S., and Ph.D. degrees from the Department of Mechanical Engineering at the Seoul National University, Korea, in 1990, 1992, and 1998, respectively. He had extensive postdoctoral experience in Mechanical and Aerospace Engineering Department at the University of California, Los Angeles (UCLA). Dr. Cho is currently an Associate Professor in the Department of Mechanical Engineering and Materials Science at the University of Pittsburgh. His primary research focus is on “microfluidics,” with particular emphasis on the development of a variety of micro/bio fluidic transducers and integrated systems that enable us to efficiently handle a wide range of micro/bio substances such as micro/nano fluids, functional particles, molecules, and so on. The major research topics include Microbubble Dynamics and Control, LOC-Based Particle Sampling, and Separation/Concentration in Droplet-Based (Digital) Microfluidics, wireless Powered EWOD (electrocuting on dielectric), Micro Propulsion Mechanisms for water-floating and underwater mini/micro robots. All these research activities have been financially supported by numerous federal grants (NSF, DOD, DOE, Department of Homeland Security and AHA) and local grants.
Micro Swimmer Navigating in Microfluidic Environments
Wednesday, 30 September 2015 at 17:00
Add to Calendar ▼2015-09-30 17:00:002015-09-30 18:00:00Europe/LondonMicro Swimmer Navigating in Microfluidic EnvironmentsLab-on-a-Chip, Microfluidics and Microarrays World Congress in San Diego, California, USASan Diego, California, USASELECTBIOenquiries@selectbiosciences.com
There have been a large number of research attempts to develop mircoswimmers to navigate passages in microfluidic devices and even narrow spaces inside human bodies to perform drug delivery, micro surgery, bio sensing, imaging, etc. This talk presents an underwater micro propulsion swimmer where a gaseous bubble trapped in a microchannel and oscillated by an external acoustic excitation generates a propelling force. The propelling swimmer is designed and microfabricated out of parylene in micro scale (equivalent diameter of the cylindrical bubble is around 60 µm) using microphotolithography. The propelling mechanism is studied and verified by computational fluid dynamics (CFD) simulations as well as experiments. The acoustically excited and thus periodically oscillating bubble generates alternating flows of intake and discharge through an opening of the microchannel. Propelling motions by a single bubble as well as an array of bubbles are achieved in microscale. In addition, the micro swimmer demonstrates payload carrying. Moreover, using multiple bubbles with frequency matching method, Steering capability is achieved. 2-D steered propelling is demonstrated in a T-junction channel.
Add to Calendar ▼2015-09-28 00:00:002015-09-30 00:00:00Europe/LondonLab-on-a-Chip, Microfluidics and Microarrays World CongressLab-on-a-Chip, Microfluidics and Microarrays World Congress in San Diego, California, USASan Diego, California, USASELECTBIOenquiries@selectbiosciences.com
Add to Calendar ▼2015-09-30 17:00:002015-09-30 18:00:00Europe/LondonMicro Swimmer Navigating in Microfluidic EnvironmentsLab-on-a-Chip, Microfluidics and Microarrays World Congress in San Diego, California, USASan Diego, California, USASELECTBIOenquiries@selectbiosciences.com
