Crystallizing Urea

Applause IconJan 14, 2015 • 5:47 PM UTC
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Cody Geary is a Carlsberg Foundation Postdoctoral Fellow working at the Interdisciplinary Nanoscience Center at Aarhus University, advised by Ebbe Andersen. Cody works on developing RNA nanostructures that fold up from a single strand of RNA. The designs, dubbed 'RNA Origami', are being developed in collaboration with Paul Rothemund at Caltech and Ebbe Andersen at Aarhus University.

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Here are some shots from my first attempt at crystallizing urea and viewing them in the foldscope.
I started out by taking a few grams of pure Urea pellets in the lab and dissolving them in about 500uL of water.
I put only 20uL of solution onto a glass slide, and then waited a few minutes for the sample to dry out before attaching it to the foldscope.
On my first try, conditions were not really optimal, and since it didn’t dry out 100% I got some really small white crystals instead of the long finger-like crystals I was hoping for. I will try again later, but the images looked so pretty anyways that I wanted to share them.

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