Field emission in an array of homogeneous identical nanometer-long nanotubes N. R. Sadykov, R. S. Khrabrov and I. A. Pilipenko Eur. Phys. J. D, 77 1 (2023) 9 Published online: 11 January 2023 DOI: 10.1140/epjd/s10053-022-00582-5