Using hand painting in the fabrication of a negative refractive index metamaterial based on circular shape with paper as the dielectric. Greensusmater, [S. l.], v. 1, n. 1, p. 15–19, 2024. DOI: 10.62755/greensusmater.2024.1.1.15-19. Disponível em: https://greensusmater.com/index.php/gsm/article/view/3.. Acesso em: 17 sep. 2024.