The lab's transmission electron microscope (TEM) is based on a modified Zeiss EM-109 (50KV or 80KV). This system has a Roper Scientific Photometrics cooled CCD camera.

The (TEM) system has been instrumental in fast nanoparticle identification.

Explanation of images:

(top) Transmission Electron Microscope (TEM).

(lower right) Au nanoparticles. Gold nanoparticles are synthesized using the citrate reduction method proposed by Turkevich et.al (1951) and refined by G. Frens (1970). Varying sizes of nanoparticles relate to the changes in the ratio of HAuCl4 and Citrate

(color image below TEM) TEM image of a 200-mesh Copper Grid with nanoparticle solution.

(lower far right) TEM Au colloid image.