1.   A single atom of copper is still a piece of copper.

2.   But there is no such thing as a single atom, or single electron, that is superconducting.

3.   Dalton never saw an atom, or the effects of a single atom.

4.   In crystallography, each lattice point can accommodate more than a single atom.

5.   In other words, only certain discrete energies would be permitted, exactly as for an electron confined in a single atom.

6.   The detection of single atoms in this way has caused great excitement because of its application in many areas.

7.   And scanning tunneling microscopes can already manipulate single atoms, which is what the assemblers would do.

8.   Atomic oxygen, found only on the fringes of the atmosphere or in controlled conditions in the laboratory, consists of single atoms.

9.   After nudging several dozen cobalt atoms to form the walls of the elliptical corral, the researchers placed a single atom at the lefthand focus.

10.   But the gates in a quantum computer would be so small that each would consist of a single atom, which means that they would behave quantum mechanically.