David Julius is an American physiologist and Nobel Prize laureate known for his work on molecular mechanisms of pain sensation and heat, including the characterization of the TRPV1 and TRPM8 receptors that detect capsaicin, menthol, and temperature.
In 2021, he was awarded the Nobel Prize in Physiology or Medicine jointly with Ardem Patapoutian for their discoveries of receptors for temperature and touch.

Photo by Steve Babuljak (Press kit from UCSF, 2021 Nobel Prize)