  We have produced magnetic patterns suitable for trapping and manipulating
neutral atoms on a $1 \mu$m length scale. The required patterns are made in
Co/Pt thin films on a silicon substrate, using the heat from a focussed laser
beam to induce controlled domain reversal. In this way we draw lines and
"paint" shaped areas of reversed magnetization with sub-micron resolution.
These structures produce magnetic microtraps above the surface that are
suitable for holding rubidium atoms with trap frequencies as high as ~1 MHz.
