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Acknowledgements
This work was supported by the Japan Science and Technology Agency, PRESTO Grant Number JPMJPR18J2,
Takeda Science Foundation, Life Science Research Grants, MIC/SCOPE (Number: 181603007), research grants
from KIOXIA Corporation (former Toshiba Memory Corporation) and Ogasawara research grant. H.O. acknowledges support from a Grant-in-Aid for Young Scientists (A) and Grant-in-Aid for Challenging Exploratory
Research provided by the Japan Society for the Promotion of Science. We would like to thank Editage (www.
editage.com) for English language editing.
Author contributions
R.M., F.N. and H.O. conceived the idea. R.M. and F.N. contributed towards device design and fabrication. S.M.,
T.E. and R.M. contributed towards the material design and fabrication. Y.I., G.I. and R.M. assisted circuit design
and set-up. R.M. and H.O. wrote the paper and all other authors provided input. F.N.’s wrist was participated in
Fig. 4. R.M.’s wrist was participated in the demonstration video.
Competing interests The authors declare no competing interests.
Additional information
Supplementary information is available for this paper at https://doi.org/10.1038/s41598-020-69689-2.
Correspondence and requests for materials should be addressed to H.O.
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