Electrically induced directional self-focusing in electrochromic NiO thin solid films. - Carrillo-Delgado, César; Arano-Martínez, Jose Alberto; Vidales-Hurtado, Mónica Araceli; Torres-Torres, David; Martínez-González, Claudia Lizbeth; Torres-Torres, Carlos (Journal of Materials Science: Materials in Electronics, 2023)