1. Department of Bioengineering, University of California, Los Angeles, CA 90095, USA.
2. Department of Mathematics, University of California, Los Angeles, CA 90095, USA.
3. Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, CA 90095, USA.
4. California NanoSystems Institute, University of California, Los Angeles, CA 90095, USA.
5. Jonsson Comprehensive Cancer Center, University of California, Los Angeles, CA 90095, USA.