... .A spur-of-the-moment experiment, cracking the secret of the 'coffee-ring effect,' captured the imaginations of sophisticated scientists, and voila! � They discovered a new technique for making inks and paints that will positively impact these technologies, enhance public appreciation of the techniques, and make them some money too.
Source: http://inventorspot.com/articles/wherefore_coffee_ring_effect_now_we_know
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