Enectalí "Tali" Figueroa-Feliciano [note 1] (born 1971) is a Puerto Rican physicist and professor at Northwestern University who pioneers the development and application of transition edge sensor (TES) detectors to experiments for detecting dark matter,[1][2][3][4] neutrino interactions, and for X-ray astronomy.

(Centro Residencial de Opportunidades Educativas en Mayaguez), he attended the University of Puerto Rico, Mayagüez Campus and, in 1995, earned a Bachelor of Science degree in mechanical engineering.

While studying at Stanford, Figueroa-Feliciano did his dissertation research at NASA Goddard Space Flight Center in Maryland, as part of the Science Cooperative Education program.

[4] Figueroa-Feliciano pioneered the development of position-sensitive detectors that will provide an order of magnitude more pixels (and thus larger field of view) than traditional single-pixel X-ray microcalorimeters.

His current research goals[8] include the search for dark matter (both directly and indirectly), the study of neutrino-nucleon scattering, and X-ray astronomy.