Funding for this research was provided by:
Exploratory Research for Advanced Technology (JPMJER1401)
Japan Society for the Promotion of Science (JP19H05691)
Received: 30 November 2020
Accepted: 14 June 2021
First Online: 24 June 2021
: Ethical approval was granted by the ethics committee of the Graduate School of Engineering Science, Osaka University.
: Written consent was obtained from participants for publication of this report and any accompanying images.
: The authors declare that they have no competing interests.