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adatom

adatom

9.9
A single atom that sits on the surface of a solid
  • noun
  • /ˈædətəm/
  • Specialized
: adátomo
  • In surface science, scientists study the movement of adatoms to understand material properties.
  • adatom motion
  • adatoms on a surface
  • adatom layer

Examples

  • Figures 3a and 3b show the reconstructed surface before and after adatom removal, respectively.

    Academic text (1998)
  • There exists effectively a smooth potential trough at the top of the step, in which the adatom can move easily.

    Academic text (1993)
  • Let us look at the two categories of adatom motion individually.

    Academic text (1993)
  • The three pale features are adatoms that remained on the surface.

    Academic text (1998)
  • The second way to study adatom motion is to make real-time observations.

    Academic text (1993)
  • There are two ways to explore adatom motion with either the STM or the FIM.

    Academic text (1993)
  • From the island density, one can determine an adatom diffusion coefficient.

    Academic text (1993)
  • No real-time observations of single-adatom migration have as yet been reported.

    Academic text (1993)
  • The greater the mobility at a fixed deposition rate, the more adatoms find existing edges, and the fewer islands form.

    Academic text (1993)
  • The only technique that had, in fact, been able to give an atomic-resolution picture of adatom motion on surfaces was field ion microscopy.

    Academic text (1993)

Surface Forms

adatom singular
adatoms plural

Morphology

adatom = atom (semi-transparent) = ad + atom

Formally built from the prefix 'ad-' (as in 'adsorbed') + 'atom', but the term is specialized technical jargon and the prefix meaning ('on' or 'added') is not obvious to average learners.

Etymology

The word adatom joins ad- meaning 'on' and atom, so it literally means an atom 'on' the surface of a material.