🛠️ Invention or technique

Field ion microscope

Microscopio de iones en campo

Date
1951 · confidence high
Place
University Park, Pennsylvania, United States
Credited to
Erwin Wilhelm Müller
Field
Communication

What it is

Microscope invented by Erwin Müller that visualizes the arrangement of individual atoms on a metal tip's surface using gas ionization in an intense electric field.

What it led to

  • First direct observation of individual atoms (1955, with Kanwar Bahadur)
  • Later development of the atom probe
  • Advances in surface science and metallurgy
  • Conceptual precursor to the scanning tunneling microscope

Links

Sources✓ verified 2026-09-28