A compact, less than 0.3 cm(3), scanning tunnelling microscope (STM) b
ased on a new inertial slider design is presented. The STM is built of
two concentric piezoelectric tubes, the inner one for scanning the ti
p and the outer one for inertial sliding of the sample to and from the
tip. The coarse approach is made by inertial sliding of the sample al
ong a plane that is non-perpendicular to the tip, while the sample sur
face is kept perpendicular to the tip throughout inertial sliding and
image acquisitions. The compact design ensures a mechanical noise leve
l of less than 0.1 Angstrom.