Dr. Jesús Arenas is currently a Titular B researcher at the UNAM Institute of Physics, he is a member of the National System of Researchers, Level III. He was president of the Asociación Mexicana de Microscopía A.C. in the 2009-2010 biennium.
He has had research stays in the microscopy laboratory at Argonne National Laboratory. He was also a researcher at the National Institute for Nuclear Research (1995-2003). His lines of research are the study of the crystalline structure of nanomaterials with catalytic and magnetic properties, as well as biomaterials, he is the author of 65 articles in indexed journals which have been cited more than 2700 times. He has directed 18 graduate and undergraduate theses.