About the Authors

Hideyuki Kato

katohdyk@stf.teu.ac.jp

Affiliation School of Engineering, Tokyo University of Technology, Tokyo Japan

Tohru Ikeguchi

Affiliation Faculty of Engineering Division I, Tokyo University of Science, Tokyo, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: HK TI. Performed the experiments: HK. Analyzed the data: HK TI. Contributed reagents/materials/analysis tools: HK. Wrote the paper: HK TI.