In Situ Electron Microscopy Capabilities

a) Dark-field image of tri-rhenium clusters on g-alumina. 3-atom cluster in circle; single atom in square. Apparent 2-atom cluster (arrowed) shows intensity profile inset. Brighter atom has double the intensity of dimmer atom, suggesting illustration in (b). This 3-atom cluster is edge-on to beam.

The ACEM and HF-3000 microscopes have available the latest in situ heating and environmental cell holders using Protochips Co. technologies for treatment of catalyst and other materials at elevated temperatures and under gas environments. The ACEM also provides a capability to treat specimens at room temperature and at atmospheric pressure in a gas, using a unique airlock reaction system. An ex situ reactor system is also available for special needs involving sample treatments in corrosive gas environments.