Both lubricant-infused surfaces and surface acoustic waves have been studied for their applicability to the field of microfluidics. However, combining the use of the two technologies has not been thoroughly explored. Specifically, this research aims to find an empirical relationship between the size of a droplet (characterized by its diameter) and the frequency required to induce motion. By placing droplets of various sizes on a lubricant-infused surface and testing the effects of surface acoustic waves of different frequencies, it has been determined that the frequency required to initiate movement of the droplet increases as the size of the droplet decreases. Experimental results indicate a logarithmic decaying relationship between frequency and droplet diameter, but more research needs to be done on droplets of diameters smaller than one millimeter. Even still, this research shows promise, as further developing an understanding of this relationship could allow greater control in microfluidic applications.

Document Type

Final Report

Author's School

McKelvey School of Engineering

Author's Department

Mechanical Engineering and Materials Science

Class Name

Mechanical Engineering and Material Sciences Independent Study

Date of Submission