About the Authors

Michihisa Maeda

Affiliation Meiji University, Faculty of Agriculture Chemistry, Kawasaki, Kanagawa 214–8571, Japan

Tomohiro Shimada

Affiliations Chemical Resources Laboratory, Tokyo Institute of Technology, Nagatsuda, Yokohama 226–8503, Japan, Research Center for Micro-Nano Technology, Hosei University, Koganei, Tokyo 184–8584, Japan

Akira Ishihama

aishiham@hosei.ac.jp

Affiliation Research Center for Micro-Nano Technology, Hosei University, Koganei, Tokyo 184–8584, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AI MM. Performed the experiments: TS AI. Analyzed the data: AI TS. Contributed reagents/materials/analysis tools: TS AI. Wrote the paper: AI.