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Atomic Elemental Tomography of Heavy Element Biomaterials

Natural small “tools” of arthropods such as jaw teeth, leg claws or stings are particularly fractureresistant. Unlike calcified tissues such as bone or teeth of vertebrate, these small functional organs are not biomineralized but instead are predominantly organic with some heavy elements (e.g. Zn, Mn and Cu) [1] However, so far the distribution and binding sites of these heavy elements in these class of biomaterials are unknown. Laser-assisted Atom Probe Tomography (APT) is developing in to an efficient technique to visualize the elemental distribution in biomaterials at near atomic scale spatial resolution [2-3]. Therefor an attempt was made to utilize laser-assisted APT to analyze the elemental distribution in such heavy element biomaterials.