|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Biological Materials Science Symposium
||The Twisted Fibrous Structure and Mechanical Behavior of Coelacanth
||Haocheng Quan, Wen Yang, Marc Andre Meyers
|On-Site Speaker (Planned)
Coelacanth (Latimeria chalumnae) plays an important role in evolution because it bridges the evolutionary gap between fish and tetrapods. After 300 million years, this “living fossil” still retains many of its original characteristics. The body is armored by the highly modified cosmoid scales, which can only be found on extinct fish. The fish scales are overlapped on the fish body; the exposed region is highly mineralized and very rough, which helps protect the fish from predators. The major component of the overlapped region of the scale is isopedine, a dense connective structure with collagen fibers orientated in different layers. The collagen fibers form a layer which are orientated almost perpendicular to the fibers in the adjacent layer, but successive bilayers show a progressive right-handed twisting arrangement. The unique architecture results in an anisotropic mechanical behavior. Toughening mechanisms will be illustrated which will inspire the synthetic work.
||Planned: Publication Outside of TMS (Indicate publication title and publisher if known.)