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Proceedings Paper

Light confinement in marine centric diatoms: main characteristics and wavelength dependence
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Paper Abstract

Valves of Coscinodiscus wailesii diatoms, monocellular micro-algae characterized by a diameter between 100 and 200 μm, show regular pores patterns which confine light in a spot of few μm2. This effect can be ascribed to the superposition of diffracted wave fronts coming from the pores on the valve surface. We studied the transmission of partially coherent light, at different wavelengths, through single valves of Coscinodiscus wailesii diatoms. The spatial distribution of transmitted light strongly depends on the wavelength of the incident radiation. Numerical simulations help to demonstrate how this effect is not present in the ultraviolet region of the light spectrum, showing one of the possible evolutionary advantages represented by the regular pores patterns of the valves.

Paper Details

Date Published: 2 August 2010
PDF: 7 pages
Proc. SPIE 7782, The Nature of Light: Light in Nature III, 778203 (2 August 2010); doi: 10.1117/12.860548
Show Author Affiliations
E. De Tommasi, Institute for Microelectronics and Microsystems (Italy)
I. Rea, Institute for Microelectronics and Microsystems (Italy)
V. Mocella, Institute for Microelectronics and Microsystems (Italy)
L. Moretti, Second Univ. of Naples (Italy)
M. De Stefano, Univ. of Naples Federico II (Italy)
I. Rendina, Institute for Microelectronics and Microsystems (Italy)
L. De Stefano, Institute for Microelectronics and Microsystems (Italy)


Published in SPIE Proceedings Vol. 7782:
The Nature of Light: Light in Nature III
Katherine Creath; Joseph A. Shaw, Editor(s)

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