SPEAR is a system of interconnected Ultrahigh Vacuum (UHV) chambers for the preparation and study of surfaces and interfaces. Transmission Electron Microscope (TEM) samples are transferred between the various chambers and the Hitachi UHV-H9000 HREM , at all times in the mid 10^-11 torr range.

The system became operational in April 1995. These are some of the early results (Graphic Intensive) which do a reasonable job of demonstrating the different capabilities of SPEAR.

Individual components of SPEAR: