Wesley Crusher's plasma physics experiment
Plasma physics was a branch of physics studying the nature and applications of plasma. Plasma dynamics was a subdiscipline of plasma physics.
In 2365, Wesley Crusher was conducting a plasma physics experiment aboard the USS Enterprise-D involving high energy plasma-reactions with antimatter. Crusher transported the experimental device aboard the USS Hathaway, where the antimatter was used to power the warp drive. (TNG: "Peak Performance").