About the Authors

Anna Labno

Affiliations Nano-scale Science and Engineering Center, Berkeley, California, United States of America, Biophysics Program, University of California Berkeley, California, United States of America

Ajithkumar Warrier

Affiliation Nano-scale Science and Engineering Center, Berkeley, California, United States of America

Sheng Wang

Affiliation Nano-scale Science and Engineering Center, Berkeley, California, United States of America

Xiang Zhang

xiang@berkeley.edu

Affiliation Nano-scale Science and Engineering Center, Berkeley, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AL AW SW XZ. Performed the experiments: AL AW. Analyzed the data: AL AW. Contributed reagents/materials/analysis tools: AL AW SW. Wrote the paper: AL AW SW XZ.