Used GATAN 691 #9253808 for sale

GATAN 691 is a precision ion milling equipment made by GATAN, Incorporated. It is designed for precise sample preparation in ultra-high resolution transmission electron microscopes (TEMs). The system utilizes a high-voltage ion source to deliver a beam of ions onto the sample's surface, which is mounted on an electron microscope stage. The ions are energetic enough to mechanically or chemically modify the sample's surface, allowing the user to precisely prepare the sample for high resolution imaging. The unit is integrated into a compact, emission-free, ventilated enclosure and is equipped with several safety and vacuum components. This ensures reliable operation via a high degree of contamination control and user safety. The unique enclosure design also helps eliminate the need for external vacuum pumps. 691 machine is capable of planar milling, removing material from the sample to create a flat surface, and spot milling, which selectively removes surface material to create pore and cavity structures in the sample. Planar milling is especially useful for creating thin samples for cryo electron microscopy. GATAN 691 can also be used to create graphene oxide membranes for their versatile applications in device fabrication, from biosensors to MEMS. In addition to the standard ion source, an optional radio frequency (RF) ion source can be integrated into 691 tool. This accesses previously unavailable milling angles, such as inclined milling, enabling greater flexibility and control when preparing high resolution TEM samples. GATAN 691 offers direct control of the milling voltage, current, beam spot size, and exposure time, which gives the user further control over the milling process and allows for ultra-precise sample preparation. The asset also comes equipped with a built-in user interface for monitoring and visualizing the milling process. This allows users to adjust the settings in real-time, ensuring that the desired results are achieved. 691 is an advanced, precision ion milling model. Its integrated design, safety and contamination-control features, as well as its user interface and functional options, make it ideal for preparing ultra-high resolution TEM samples. Its capability for inclined milling also permits greater control and flexibility when creating nanostructures and other high-precision samples for device fabrication and biosensor applications.