Optical Addressing of Polymer Beads for Chip-Based Systems Mihrimah Ozkan 1 Sangeeta Bhatia 2 , and Sadik C. Esener 3* 1 Department of Electrical Engineering and Department of Chemical and Environmental Engineering University of California, Riverside 2 Department of Bioengineering University of California, San Diego 3 Department of Electrical and Computer Engineering University of California, San Diego * To whom correspondence should be addressed. E-mail: sadik@ece.ucsd.edu