Nobel Prize-winning Swiss mathematician Heinrich Rohrer is best remembered for co-designing the scanning tunneling microscope along with fellow Nobel winner Ernst Ruska. He was also associated with the IBM Research laboratory and even conducted research on thermal conductivity at Rutgers University in New Jersey while on his honeymoon in the US.
German chemist Christian Friedrich Schönbein is best remembered for his discovery of ozone and the fuel cell. He also discovered guncotton, or nitrocellulose, as a result of a kitchen accident. He was an apprentice at a chemical firm at 13 and grew up to teach at the at the University of Basel.