Hans Georg Dehmelt

Hans Georg Dehmelt (9 September 1922 – 7 March 2017) was a German-born American physicist. He was awarded Nobel Prize in Physics in 1989, for co-developing the ion trap technique with Wolfgang Paul. They shared one-half of the prize (the other half of the Prize in that year was awarded to Norman Foster Ramsey). Their technique was used for high precision measurement of the electron g-factor.
Dehmelt died on 7 March 2017 in the Seattle, Washington from natural causes, aged 94.