About the Authors
- Kurt Andresen
- Department of Physics, Gettysburg College, Gettysburg, Pennsylvania, United States of America
- Isabel Jimenez-Useche, Chongli Yuan
- School of Chemical Engineering, Purdue University, West Lafayette, Indiana, United States of America
- Steven C. Howell, Xiangyun Qiu
- Department of Physics, George Washington University, Washington, District of Columbia, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: KA CY XQ IJU SCH. Performed the experiments: KA IJU XQ SCH CY. Analyzed the data: KA IJU XQ CY SCH. Contributed reagents/materials/analysis tools: IJU CY SCH XQ KA. Wrote the manuscript: KA IJU SCH XQ CY.