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Complex micro- and nano-structured materials for photonic applications are designed and fabricated using top technologies. A completely different approach to engineering systems at the sub-micron-scale consists in recognizing the nanostructures and morphologies that nature has optimized during life's history on earth. In fact, biological organisms could exhibit ordered geometries and complex photonic structures which often overcome the products of the best available fabrication technologies. An example is given by diatoms. They are microalgae with a peculiar cell wall made of amorphous hydrated silica valves, reciprocally interconnected in a structure called the frustule. Valve surfaces exhibit specie-specific patterns of regular arrays of chambers, called areolae, developed into the frustule depth. Areolae range in diameter from few hundreds of nanometers up to few microns, and can be circular, polygonal or …
International Society for Optics and Photonics
Publication date: 
23 May 2007

Luca De Stefano, Mario De Stefano, Pasqualino Maddalena, Luigi Moretti, Ilaria Rea, Vito Mocella, Ivo Rendina

Biblio References: 
Volume: 6593 Pages: 659313
Photonic Materials, Devices, and Applications II