The following papers published in the journal "Electronics and Communications in Japan" are the top 10 most downloaded papers published between January 1, 2019 and December 31, 2020. We show that the results of this research have had a great impact and interest on many researchers around the world.

Yoshiaki Kanamori, Tomoki Shimizu, Shin-Ichiro Nomura, and Kazuhiro Hane,
“Fabrication of refractive index sensors using polarization independent metamaterial and their application to chemical concentration measurement and DNA detection,”
Electronics and Communications in Japan, vol. 102, no. 10, pp. 34-40 (2019).
https://doi.org/10.1002/ecj.12208