Joachim Frank
Joachim Frank (born September 12, 1940) is a German-born American biophysicist at Columbia University. He is thought to be as the founder of single-particle cryo-electron microscopy (cryo-EM). He shared the Nobel Prize in Chemistry in 2017 with Jacques Dubochet and Richard Henderson.  He also made major works to structure and function of the ribosome from bacteria and eukaryotes.