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QX3 Digital Image Gallery
Polarized Light
Caffeine
Caffeine is a xanthine nitrogen heterocyclic purine analog that belongs to a family of chemicals that serve as a nucleus for pharmacological agents. Caffeine is rapidly absorbed and distributed in all body tissues and fluids including the central nervous system, fetal tissues, and breast milk. Like many of its organic relatives, caffeine is very easy to crystallize on a microscope slide for digital imaging with a microscope.
Polarized light images were captured using an Intel Play QX3 computer microscope modified for crossed polarized illumination. Additional light was applied to the specimens using light pipes from a Dolan-Jenner Model 180 fiber optics illuminator containing a 150 watt projection lamp. A 5/16-inch hole was drilled into the light mixing chamber at the base of the microscope and the light pipe was pointed towards the far wall of the chamber to increase illumination.
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