ABSTRACT
Diatoms are single-cell aquatic microalgae exhibiting remarkable self-assembled patterns of micro and nanoporous three-dimensional silica cell walls called frustules. The structure is quasi-periodically and extremely fine porous network on the surface of these diatoms makes them an attractive tool for various applications based on photonic and optic properties. This has been used in various other areas also like in nanotechnology which includes drug delivery, biosensing, biomimetics, molecular biology, food industries and bioremediations of contaminated water. All these features of diatoms lead us to move ahead in the research where diatoms could be an economical, lucrative source of many novel substances that will be beneficial in the field of medical and health sector in our near future.
