Used GATAN 656 #9313423 for sale

GATAN 656 is an ion milling equipment used for the preparation of scanning transmission electron microscopy (STEM) samples. It mechanically etches a sample surface, which allows for better imaging of the sample structure in STEM. In the process of ion milling, high energy ions are impinged on the sample surface and remove a thin layer of its material, leaving a freshly exposed surface. 656 is a state-of-the-art ion milling system that is capable of milling said sample surfaces with an extremely high degree of precision and uniformity. GATAN 656 consists of four components: the ion source, the sample holder, the collimator, and the vacuum chamber. The ion source is responsible for producing and accelerating the ion milling particles. The particles are made up of argon and xenon gases. The sample holder forcibly fixes the sample to the electron microscope. The collimator is responsible for controlling the ion beam by passing it through an adjustable metal slit. At the end is the vacuum chamber, which allows the passage of the ions, while maintaining the sample in a vacuum sealed environment. The viability of 656 unit is dependent on its accuracy and uniformity in ion milling. Through the use of the aforementioned components, the machine produces a finely focused beam of ions that etches a thin layer of the sample material, leaving a freshly exposed surface. The thickness of the layer removed can be controlled with great precision to allow for a desired resolution. In addition to that, it also can operate is several modes, including high and low current milling. High current milling allows for high-speed, high-accuracy etching in areas of low resolution, while the low current mode is suitable for higher-resolution patterns. GATAN 656 is typically used for the preparation of STEM samples. An electron microscopy image is usually obtained in small regions, with the sample being exposed layer by layer with ion milling. The uniform etching of the sample by 656 tool allows for clean imaging of the sample structure, a better understanding of its detailed composition, and its affinity to specific elements. It also allows for clearer electron diffraction patterns and a greater insight into the atomic arrangement structure of materials. In conclusion, GATAN 656 is a state-of-the-art ion milling machine that provides a fast and precise sample preparation for scanning transmission electron microscopy. It utilizes a carefully crafted configuration of its components to accurately etch a sample surface layer-by-layer. This asset allows researchers to obtain a greater understanding of their sample structure, composition, and structure as well as for clearer electron diffraction patterns.