February 11th has been designated as the international day of women and girls in science to promote their participation in STEM (Science, Technology, Engineering, Mathematics) activities [1]. For the first time in 2020, the Physics Institute of BUAP (IFUAP) opens its doors to young girls to talk about science and technology. Here, at the BUAP IF2 building, you can find me at the Lab-205 which is designed for the development of hin films and nanoparticles of novel materials. This laboratory is where I am doing my postdoctoral project but take it easy. I am not going to explain physic or chemistry stuff.…