Journal Papers

 S. K. Chung and S. K. Cho, “On-chip manipulation of objects using mobile oscillating bubbles,” Journal of Micromechanics and Microengineering (accepted for publication), 2008.

 S. K. Chung and S. K. Cho, “3-D Manipulation of millimeter- and micro-sized objects using an acoustically-excited oscillating bubble,” Microfluidics and Nanofluidics (Online published as ASAP article, DOI: 10.1007/s10404-008-0324-2), 2008.

 H. I. Park, D. Sanchez, S. K. Cho, and M. Yun, “Bacterial diversity in mediator-less microbial fuel cell based on electron-beam Pt-deposited electrodes,” Journal of Environmental Science and Technology (Online published as ASAP article, DOI: 10.1021/es8006468), 2008.

 S. K. Chung, Y. Zhao, and S. K. Cho, “On-chip creation and elimination of microbubbles integrated with EWOD actuations toward micro-object manipulator,” Journal of Micromechanics and Microengineering (in press), 2008.

 S. K. Cho and H. Moon., “Electrowetting on dielectric (EWOD): new tool for bio/micro fluid handling,” The BioChip Journal, Vol. 2, No. 2, pp. 79-96 (invited review paper), 2008.

 Y. Zhao, S. K. Chung and S. K. Cho, “Droplet manipulation and microparticle sampling on perforated microfilter membranes,” Journal of Micromechanics and Microengineering, Vol. 18, pp. 1-11, 2008.

 Y. Wang, Y. Zhao , and S. K. Cho, “Efficient in-Droplet Separation of Magnetic Particles for Digital Microfluidics,” Journal of Micromechanics and Microengineering, Vol. 17, pp. 2148-2156, 2007.

 Y. Zhao, U.-C. Yi and S. K. Cho, "Micro Particle Concentration and Separation by Travelling Wave Dielectrophoresis (twDEP) for Digital Microfluidics," Journal of Microelectromechanical Systems, Vol. 16, No. 6, pp. 1472-1481, 2007.

 H. I. Park, U Mushtaq, D. Perello, I Lee, S. K. Cho, and M Yun, "Effective and Low-Cost Platinum Electrodes for Microbial Fuel Cells Deposited by Electron Beam Evaporation," Energy and Fuels, Vol. 21, pp. 2984-2990, 2007.

 S. K. Cho, Y. Zhao and C.-J. Kim, "Concentration and binary separation of micro particles for droplet-based digital microfluidics," Journal of Lab on a Chip, Vol. 7, pp. 490-498, 2007.

 Y. Zhao and S. K. Cho, "Micro air bubble manipulation by electrowetting on dielectric (EWOD): transporting, splitting, merging and eliminating of bubbles," Journal of Lab a Chip, Vol. 7, pp. 273-280, 2007.

 Y. Zhao and S. K. Cho, "Microparticle Sampling by Electrowetting-Actuated Droplet Sweeping, " Journal of Lab on a Chip, Vol. 6, pp. 137-144, 2006.

 C. Jewart, B. McMillen, S. K. Cho, and K. P. Chen, "X-Probe Flow Sensor Using Self-Powered Active Fiber Bragg Gratings," Sensors and Actuators A, Vol. 127, pp. 63-68, 2006.

 T. K. Hsiai, S. K. Cho, P. K. Wong, M. H. Ing, A. Salazar, S. Hama, M. Navab, L. L. Demer, C.-M. Ho, 2004, "Micro Sensors: Linking Real-Time Oscillatory Shear Stress with Vascular Inflammatory Responses," Annals of Biomedical Engineering, Vol. 32, pp. 189-201. 

 S. K. Cho, H. Moon, and C.-J. Kim, 2003, "Creating, Transporting, Cutting and Merging of Liquid Droplets by Electrowetting-Based Actuation for Digital Microfluidic Circuits," Journal of Microelectromechanical Systems, Vol. 12, No. 1, pp. 70–80.

 H. Moon, S.K. Cho, R.L. Garrell, and C.-J. Kim, 2002, "Low Voltage Electrowetting-On-Dielectric," Journal of Applied Physics, Vol. 92, No. 7, pp. 4080–4087.

 T.K. Hsiai, S.K. Cho, P.K. Wong, M. Ing, A. Salazar, A. Scvarrian, M. Navab, L.L. Demer, and C.M. Ho, 2003, "Monocyte recruitments to endothelial cells in response to oscillatory shear stress," The FASEB (Federation of American Societies for Experimental Biology) Journal, Vol. 17, pp. 1648–1657.

 T.K. Hsiai, S.K. Cho, J.M. Yang, X. Yang, Y.C. Tai, and C.M. Ho, 2002, "Pressure Drops of Water Flow through Micromachined Particle Filters," ASME Journal of Fluids Engineering, Vol. 124, No. 4, pp. 1053–1056.

 T.K. Hsiai, S.K. Cho, H.M. Honda, S. Hama, M. Navab, L.L. Demer, A.M. Fogelman, and C.M. Ho, 2002, "Endothelial Cell Dynamics under Pulsating Flows: Significance of High-vs. Low Shear Stress Slew Rates (d(tau)/dt)," Annals of Biomedical Engineering, Vol. 30, No. 5, pp. 646–656.

 T.K. Hsiai, S.K. Cho, S. Reddy, S. Hama, M. Navab, L. Demer, H.M. Honda, and C.M. Ho, 2001, "Pulsatile Flow Regulates Monocyte Adhesion to Oxidized Lipid-Induced Endothelial Cells," Arteriosclerosis Thrombosis and Vascular Biology, Vol. 21, pp. 1770–1776.

 S. K. Cho, J.Y. Yoo, H. Choi, 2000, "Resonance in an axisymmetric jet under controlled helical fundamental and axisymmetric subharmonic forcing," AIAA Journal, Vol. 38, No. 3, pp. 434–441.

 S. K. Cho, J.Y. Yoo, H. Choi, 1998, "Vortex pairing in an axisymmetric jet using two-frequency acoustic forcing at low to moderate Strouhal numbers," Experiments in Fluids, Vol. 25, pp. 305–315.

 

Book chapters

 Sang Kug Chung, Yuejun Zhao, and Sung Kwon Cho, "Electrowetting-On-Dielectric (EWOD) Microfluidic Devices," in Lab on a Chip (LOC) Technologies and Applications, Edited by Keith E. Herold and Avi Rasooly (in press).

 

Conference Papers

 S. K. Chung, K. Ryu, and S. K. Cho, “A surface-tension-driven propulsion and rotation principle for water-floating mini/micro robots,” The 22nd International Conference on Micro Electro Mechanical Systems (MEMS 2009), January 25-29, 2009, Sorrento, Italy (Accepted).

 S. K. Cho, “Manipulation of objects using EWOD-actuated oscillating bubbles,” The 6th International Meeting on Electrowetting, August 20 - 22, 2008, UCLA, LA, CA (invited).

 S. K. Chung and S. K. Cho, “2-D and 3-D Manipulations of objects using acoustically-excited oscillating bubbles,” The US-Korea Conference on Science, Technology, and Entrepreneurship (UKC), August 14 – 17, 2008, San Diego, CA (accepted).

 S. K. Chung and S. K. Cho, “Micro/mini tweezers using an oscillating bubble for biological object manipulation,” The 16th International Conference on Mechanics in Medicine and Biology (ICMMB 2008), 23 - 25 July 2008, Pittsburgh, USA (invited).

 K. Ryu, S. K. Chung, and S. K. Cho, “Separation and collection of microparticles using oscillating bubbles,” The 12th International Conference on Miniaturized Systems for Chemistry and Life Sciences (µTAS 2008), October 12 – 16, 2008, San Diego, CA (accepted).

 S. K. Chung and S. K. Cho, “On-chip creation and elimination of microbubbles by electrolysis and EWOD for micro-object manipulator,” The 12th International Conference on Miniaturized Systems for Chemistry and Life Sciences (µTAS 2008), October 12 – 16, 2008, San Diego, CA (accepted).

 Y. Zhao and S. K. Cho, “Droplet manipulation on high-opening micro filter meshes,” The 21st International Conference on Micro Electro Mechanical Systems (MEMS 2008), January 13-17, 2008, Tucson, AZ, USA, pp. 645-648.

 S. K. Chung and S. K. Cho, “Oscillating Mobile Bubbles for Microfluidic Mixing Enhancement,” The 11th International Conference on Miniaturized Systems for Chemistry and Life Sciences (µTAS 2007), 7 - 11 October 2007, Paris, France, pp. 913-915.

 S. K. Chung, U.-C. Yi, and S. K. Cho, “Micro Post-Structured Surfaces for Bubble Detachment,” The 11th International Conference on Miniaturized Systems for Chemistry and Life Sciences (µTAS 2007), 7 - 11 October 2007, Paris, France, pp. 1634-1636.

 K. Ryu, S. K. Chung, and S. K. Cho, “A New Micropumping Principle by Acoustically Excited Oscillating Bubble,” The 11th International Conference on Miniaturized Systems for Chemistry and Life Sciences (µTAS 2007), 7 - 11 October 2007, Paris, France, pp. 300-302.

 Y. Zhao, S. K. Chung, U.-C. Yi, and S. K. Cho, “Micro Particle Sampling on Microfabricated Perforated Filter Membranes,” The 11th International Conference on Miniaturized Systems for Chemistry and Life Sciences (µTAS 2007), 7 - 11 October 2007, Paris, France, pp. 847-849.

 Y. Z. Wang, Y. Zhao, and S. K. Cho, "In-droplet Magnetic Beads Concentration and Separation for Digital Microfluidics," The 14th International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers 2007), Lyon, France, June 10-14, 2007, pp. 711-714.

 S. K. Chung, Y. Zhao, U.-C. Yi and S. K. Cho, "Micro Bubble Fluidics by EWOD and Ultrasonic Excitation for Micro Bubble Tweezers," 20th International Conference on Micro Electro Mechanical Systems (MEMS 2007), January 21-25, 2007, Kobe, Japan (Accepted for oral presentation), pp. 31-34.

 Y. Zhao, U.-C. Yi, and S. K. Cho, "Highly Efficient in-Droplet Particle Concentration and Separation by twDEP and EWOD for Digital Microfluidics," 20th International Conference on Micro Electro Mechanical Systems (MEMS 2007), January 21-25, 2007, Kobe, Japan (Accepted for poster presentation), pp. 537-540.

 S. K Cho and Y. Zhao, "A Criterion on Splitting a Micro Air Bubble Squeezed Between Two Solid Plates," 59th Annual Meeting of the APS Division of Fluid Dynamics, November 19-21, 2006, Tampa Bay, Florida (Abstract). 

 S. K. Chung, Y. Zhao, and S. K. Cho, "Micro particle sampling on a perforated filter membrane by EWOD-actuated droplet sweeping," The 10th International Conference on Miniturized Systems for Chemistry and Life Science (Micro TAS 2006), November 5-9, 2006, Tokyo, Japan (Accepted for oral presentation).

 Y. Zhao, U.-C. Yi, and S. K. Cho, "In-droplet particle separation by traveling wave dielectrophoresis (twDEP) and EWOD," Accepted in A Solid State Sensors, Actuators and Microsystems Workshop, (Hilton Head 2006), June 4-8, 2006, Hilton Head Island, South Carolina, USA, pp. 181-184.

 Y. Zhao and S. K. Cho, "Micro bubble manipulation towards single cell handling tool," Proceedings of 2005 IEEE International Conference on Robotics and Biomimetics, Hong Kong SAR and Macau SAR, June 29-July 03, 2005, pp. 269-273 (Selected for the Best Paper Finalist).

 Y. Zhao and S. K. Cho, "Micro air bubble manipulation by electrowetting principle: transporting, merging and eliminating," 2005 International Conference on Micro channels and Mini channels (ICMM2005-75154), Toronto, Canada, 2005.

 Y. Zhao, and S. K. Cho, "Micro particle sampling using electrowetting actuated droplet sweeping," The 13th International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers 2005), Seoul, Korea, June 5-9, 2005, pp. 129-134.

 S. K. Cho and C.J. Kim, "Particle Separation and Concentration Control for Digital Microfluidics," The 16th Annual IEEE International Conference on MEMS (MEMS 2003), Kyoto, Japan, Jan 2003, pp. 686–689.