the fraunhofer imws is looking for a transmission electron microscope (tem), which can also be operated as a scanning transmission electron microscope (stem), with a maximum acceleration voltage
of 200 kv for the microstructural characterization of material samples.
SOPHI-400" is a high-acceleration ion implanter, which reduces drive power loss, increases switching speed and performs the process with acceleration voltage
up to 2.
Scanning electron microscopy (SEM) was carried out with a resolution of 3 nm (high vacuum mode) and 4 nm (variable pressure mode), with an acceleration voltage
In this project, the acceleration voltage
of 5kV was used with scanning area of 500 [micro]m to obtain the best image.
where r is the penetration depth, U the acceleration voltage
, and [rho] is the material density.
Other features of the SEM system include acceleration voltage
The energy gain of the electron beam is proportional to the acceleration voltage
and is expressed in electron volts (eV) that represent the energy gained by a particle of unit charge by passing the potential difference of 1 V.
Furthermore, the depth can be varied by changing the acceleration voltage
of the electron beam (typically within the range of 10-30 keV), yielding three-dimensional information.
Mass spectroscopy was carried out at a collision energy of 70 eV and an acceleration voltage
of 10 kV.
Power density defines the energy distribution in the weld pool and can be affected by the acceleration voltage
, beam current, oscillatory pattern, focus, gun-to-work distance, vacuum level, and method of filament peaking.
The equipment and services to be provided must meet the following requirements: electron microscope has a resolution of at least 4nm acceleration voltage
of at least 20kv se and bse detectors manual operator panel (at least focus, Magnification, Brightness, Contrast) joystick sampling sample transfer x, Y, Directional motors in xy directions sample transfer in a range of at least 40 x 40 mm indicate the area shown in the figure with a magnification of 3000 times a silent ssd detector with an active area of at least 10 mm2, Mn k-alpha peak width not more than 136 ev eds software for at least a qualitative and quantitative analysis of elemental spectra.
The photo shows a scale of butterfly wing (Pieris Brassicae) taken on the EVO HD electron microscope at 5 kV acceleration voltage