Sunday, April 13, 2014

Caffeine under a microscope

This is the stuff that makes coffee to a decent drink; caffeine under a microscope. It is extracted from normal coffee powder by micro-sublimation (the transition from the solid to the gas phase without a liquid phase). The crystals are needles that form a dense network; the color is made by polarized light.

Caffeine under the microscope
Caffeine under a microscope (magnification 100x and polarized light).

Caffeine
Caffeine under a microscope (magnification 200x and polarized light).

Caffeine crystals
Caffeine under a microscope (magnification 80x and polarized light).

1 comment:

  1. cool. But looking like that I would have a sour throat. :)

    ReplyDelete

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