Centro de Investigaciones en Optica (also known as CIO) is a research center in the field of optics which is a branch of physics. CIO is located in the city of Leon in the state of Guanajuato in Mexico (approximately at 21°09'12.02"N 101°42'15.84"W). It also has an industrial research facility in the city of Aguascalientes.
“Paper-based diagnostic tests are cheap, convenient and biodegradable. However, their use is limited by conventional dyes—which are not bright enough to show trace amounts of analyte, are prone to fading, and can be environmentally toxic. Now researchers are using …