Answer
The answer is IBM. Gerd Binnig and Heinrich Rohrer, two physicists at IBM Zurich, invented the scanning tunneling microscope (STM) in 1981 while they were investigating surface physics. Their ground-breaking work earned them the Nobel Prize in Physics in 1986. The STM allowed scientists to image the surface of materials at the atomic level, opening up new possibilities for studying and manipulating matter at the nanoscale.