Cross, who was Evan Pugh Professor
Emeritus of Electrical Engineering, came to
Penn State in 1961, an Englishman who
served in the British Admiralty during
WWII where he formed part of the group
using high frequency direction finding
to track German U-boats in the Battle
of the Atlantic.
Along with close friend and collaborator
Robert Newnham, Cross developed the
underwater sonar transducers that helped
the U.S. Navy maintain its lead in the
field throughout the Cold War. Also in
collaboration with Newnham, he was
responsible for the transducers used in
virtually all medical ultrasound devices.
His first paper, “Optical Studies of Barium
Titanate,” was published in the journal
Nature in 1949. He published more
than 850 papers in refereed journals, was
elected to the National Academy of
Engineering in 1983, and received
materials’ highest award, the Von Hipple
Award, in 2010.