Origin of high strength and nanophotonic properties of crab shell (Paralithodes camtschaticus)
Understanding biomaterial is very important for superior material development. Here, we report structural and nanophotonic properties of crab shell. The fibrous shell is composed of nanocrystalline calcite, which gives the structure very high strength. Scanning electron microscope cross section and...
| Published in: | Journal of Applied Physics |
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| Main Author: | |
| Format: | Article in Journal/Newspaper |
| Language: | English |
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AIP Publishing
2009
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| Online Access: | http://dx.doi.org/10.1063/1.3079511 https://pubs.aip.org/aip/jap/article-pdf/doi/10.1063/1.3079511/15033207/056108_1_online.pdf |
| Summary: | Understanding biomaterial is very important for superior material development. Here, we report structural and nanophotonic properties of crab shell. The fibrous shell is composed of nanocrystalline calcite, which gives the structure very high strength. Scanning electron microscope cross section and energy dispersive x-ray shows top surface (reddish) is fibrous with metal nanoparticle segregation, while the bottom layer is composed of layered nanohole array similar to air-dielectric photonic lattice structure. The air-dielectric nanohole arrays are disordered but correlated with fractal dimension >1 and able to block infrared. Nanocrystalline calcite and metal nanoparticles can also block extreme level of UV. |
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