Microscopy high voltage transmission

There are two main classes of electron micro.s-copy (EM) techniques. In the first class, the electron probe is a stationary beam incident along a fixed direction. This incident beam can be parallel [conventional transmission electron microscopy (CTEM), high-resolution transmission electron microscopy (HRTEM), high-voltage transmission... [Pg.1077]

The calcined samples are investigated by transmission electron microscopy (TEM) in a Philips EM 420 instrument operated at 120 kV. The specimens are deposited on a copper grid coated with a carbon film. High-resolution transmission electron microscopy (HRTEM) has been carried out at the Laboratory of Inorganic Chemistry, ETH Zurich, Switzerland, with a Philips CM20-ST microscope (accelerating voltage 300 kV). [Pg.476]

In transmission electron microscopy an electron beam is emitted from a cathode (e.g. tungsten wire) at high voltage. The wavelength of this electron beam depends upon the applied acceleration potential which accelerates the electrons... [Pg.274]

Transmission electron microscopy (TEM) is similar to SEM except that the beam passes through the sample. A high-voltage (80-200 keV) highly focused electron beam is passed through a thin solid sample, typically 100-200 nm in thickness. Electrons undergo coherent scattering or diffraction from lat-... [Pg.328]

Inner stmcture, phase distribution High voltage electron microscopy (HVEM), scanning transmission electron microscopy (STEM)... [Pg.142]

Transmission electron microscopy (TEM). The identification of Ag-NPs and their size analysis were carried out using high-resolution transmission electron microscopy (TEM). A Phillips CM 12 (Amsterdam, Netherlands) microscope with an acceleration voltage of 120 kV was used. The samples were prepared by spraying silver sols onto carbon-coated copper grids and then analyzed. [Pg.245]