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Esther Marley Conwell (May 23, 1922 – November 16, 2014) was a pioneering American chemist and physicist, best known for the Conwell-Weisskopf theory that describes how electrons travel through semiconductors, a breakthrough that helped revolutionize modern computing. During her life, she was described as one of the most important women in science.
Conwell studied properties of semiconductors and organic conductors, especially electron transport. In 1990, she became an adjunct professor at the University of Rochester while still working at Xerox. In 1998, she joined the University of Rochester faculty full-time as a professor of chemistry, focused on the flow of electrons through DNA.Conwell held four patents and published more than 270 papers and multiple textbooks over the course of her career. Her textbook, High Field Transport in Semiconductors, became the authoritative text in the field. She received numerous honors, including the National Medal of Science in 2009.