About the Authors

Wataru Naito

Contributed equally to this work with: Wataru Naito, Motoki Uesaka, Chie Yamada

w-naito@aist.go.jp

Affiliation Research Institute of Science for Safety and Sustainability, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki, Japan

Motoki Uesaka

Contributed equally to this work with: Wataru Naito, Motoki Uesaka, Chie Yamada

Affiliation Research Institute of Science for Safety and Sustainability, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki, Japan

Chie Yamada

Contributed equally to this work with: Wataru Naito, Motoki Uesaka, Chie Yamada

Affiliation Research Institute of Science for Safety and Sustainability, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki, Japan

Tadahiro Kurosawa

‡ These authors also contributed equally to this work.

Affiliation National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki, Japan

Tetsuo Yasutaka

‡ These authors also contributed equally to this work.

Affiliation Institute for Geo-Resources and Environment, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki, Japan

Hideki Ishii

‡ These authors also contributed equally to this work.

Affiliation Fukushima Future Center for Regional Revitalization, Fukushima University, Fukushima, Japan

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: WN TY HI. Performed the experiments: WN MU. Analyzed the data: WN MU CY. Contributed reagents/materials/analysis tools: WN TK. Wrote the paper: WN.