Bio:

Born on July 29, 1983 in Seattle, WA
Grew up in Kingston, WA
2006: B.S. Mechanical Engineering, Cornell University
2011: Ph.D. Mechanical Engineering, UCLA


Research Interests:

Electrowetting-on-dielectric (EWOD)
Microfluidics for point-of-care and high-throughput screening devices
Microelectromechanical Systems (MEMS) fabrication

 

Projects:
Monolithic EWOD chips
Surface-micromachined EWOD chips in the parallel-plate configuration have been demonstrated with 10 um gap heights.
Reference: W. C. Nelson and C.-J. Kim, “A Monolithic EWOD Chip by Surface Micromachining”, Technical Digest, Solid-State Sensor, Actuator and Microsystems Workshop, Hilton Head Island, SC, June 2010, pp. 158-161.

 

EWOD-actuated filament rheometer
A micromachined chip generates liquid filaments by electrostatic force for capillary breakup rheometry of microliter volumes.
Reference: W. C. Nelson, P. Kavehpour, and C.-J. Kim, “A Micro Extensional Filament Rheometer Enabled by EWOD”, Proc. IEEE Int. Conf. MEMS, Hong Kong, China, Jan. 2010, pp. 75-78.

 

Incubated MALDI-MS sample preparation using multifunctional EWOD electrodes
Multifunctional EWOD electrodes perform actuation, heating, and temperature sensing without complicated fabrication or operation.
Reference: W. C. Nelson, I. Peng, G.-A. Lee, J. A. Loo, R. L. Garrell, and C.-J. Kim, “Incubated Protein Reduction and Digestion on an Electrowetting-on-Dielectric Digital Microfluidic Chip for MALDI-MS,” Analytical Chemistry, Vol. 82, No. 23, December 2010, pp. 9932–9937.

 

Journal papers
W. C. Nelson and C.-J. Kim, “Droplet Actuation by Electrowetting-on-Dielectric: A Review,” Journal of Adhesion Science and Technology, In press.
W. C. Nelson, I. Peng, G.-A. Lee, J. A. Loo, R. L. Garrell, and C.-J. Kim, “Incubated Protein Reduction and Digestion on an Electrowetting-on-Dielectric Digital Microfluidic Chip for MALDI-MS,” Analytical Chemistry, Vol. 82, No. 23, December 2010, pp. 9932–9937.
J. L. Poulos, W. Nelson, T.-J. Jeon, C.-J. Kim, and J. J. Schmidt, “EWOD Based Microfluidics for Integrated Lipid Bilayer Formation and Ion Channel Measurement”, Applied Physics Letters, Vol. 95, Issue 1, July 2009, 013706 (3 pages) (doi: 10.1063/1.3167283).
Vishal Tandon, Sharath K. Bhagavatula, Wyatt C. Nelson, and Brian J. Kirby, “Zeta potential and electroosmotic mobility in microfluidic devices fabricated from hydrophobic polymers: 1. The origins of charge,” Electrophoresis, vol. 29(5), (2008), p. 1092-1101.

 

Conference papers
W. C. Nelson, M. Yen, P. Y. Keng, R. M. van Dam, and C.-J. Kim, “High Pressure EWOD Digital Microfluidics”, Proc. Int. Conf. Solid State Sensors, Actuators and Microsystems (Transducers ’09), June 2011, Beijing, China, (upcoming).
W. C. Nelson and C.-J. Kim, “A Monolithic EWOD Chip by Surface Micromachining”, Technical Digest, Solid-State Sensor, Actuator and Microsystems Workshop, Hilton Head Island, SC, June 2010, pp. 158-161.
W. C. Nelson, P. Kavehpour, and C.-J. Kim, “A Micro Extensional Filament Rheometer Enabled by EWOD”, Proc. IEEE Int. Conf. MEMS, Hong Kong, China, Jan. 2010, pp. 75-78.
W. C. Nelson, P. Sen, and C.-J. Kim, “Resistance of Droplets Sliding by EWOD Actuation”, Proc. Int. Conf. Solid State Sensors, Actuators and Microsystems (Transducers ’09), June 2009, Denver, CO, U.S.A., pp. 2014-2017.
W. C. Nelson, I. Peng, J. A. Loo, R. L. Garrell, and C.-J. Kim, “An EWOD Digital Microfluidic Chip with Integrated Localized Temperature Control for Multiplex Proteomics Sample Processing”, Proc. IEEE Int. Conf. MEMS, Jan. 2009, Sorrento, Italy, pp. 280-283.

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