About the Authors

Frank B. Myers

Affiliations Department of Bioengineering, University of California, Berkeley, California, United States of America, Berkeley Sensor and Actuator Center, University of California, Berkeley, California, United States of America

Richard H. Henrikson

Affiliations Department of Bioengineering, University of California, Berkeley, California, United States of America, Berkeley Sensor and Actuator Center, University of California, Berkeley, California, United States of America

Jennifer Bone

Affiliation Department of Physics, University of California, Berkeley, California, United States of America

Luke P. Lee

lplee@berkeley.edu

Affiliations Department of Bioengineering, University of California, Berkeley, California, United States of America, Berkeley Sensor and Actuator Center, University of California, Berkeley, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: FM RH LL. Performed the experiments: FM RH JB. Analyzed the data: FM. Contributed reagents/materials/analysis tools: FM RH LL. Wrote the paper: FM RH JB LL.