This alien glob is a piece of gum arabic from the hardened sap of the Acacia tree, most likely collected from a tree in Sudan. Rox Middleton explains how the electron microscope has changed the way we are able to interact with objects at the nanoscale, allowing us to enjoy a glimpse of the exquisite abstract forms around us. – See more at: http://www.cam.ac.uk/research/features/nanomaterials-up-close-gum-arabic#sthash.lQpMingp.dpuf
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