Function | LVEM5 is a desktop multifunctional electron microscope with three imaging modes: transmission electron microscope (TEM), electron diffraction (ED) and scanning electron microscope (SEM). Three imaging modes of TEM-ED-SEM are realized on the mirror.
Adopting 5kV low voltage design, compared with high voltage, low voltage electron beam has a stronger effect on the sample, has high sensitivity to density and atomic number, and can still get good image contrast for a density difference of 0.005g/cm3. Therefore, there is no need to spray gold when observing biological samples, avoiding sample contamination and distortion caused by staining, and showing the original appearance of samples. |
Instrument Specifications | ELECTRON OPTICS:
● Condenser Lens: Permanent magnets
1. Smallest illuminated area: 100 nm
2. Condenser apertures: f 50, 30 µm
● Objective Lens: magnetostatic
1. Focal length 1.26 mm
2. C S 0.64 mm
3. C C 0.89 mm
4. α theoretical (aperture angle) 10-2 rad
5. Objective (contrast) aperture f 50, 30 µm
● Projection Lenses (TEM): Electrostatic
1. Basic TEM: Single Lens
2. TEM BOOST Double Lens
● TEM IMAGE CAPTURE
Basic TEM
Camera: Retiga 4000R CCD
Sensor Size: 2,048 x 2,048 pixels
Digitization: 12-bit
Pixel Size: 7.4 x 7.4 µm
Cooling: Peltier cooled TEM BOOST
Camera: Zyla 5.5 Scientific CMOS
Sensor Size: 2,560 x 2,160 pixels
Digitization: 12 or 16 bit
Pixel Size: 6.5 x 6.5 µm
Cooling: TE Cooled
Read Noise: 1.2 e – |
