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Photonic crystal type structures of biological origin: Structural and spectral characterization
K. Kertesz,Zs. Balint,Z. Vertesy,G.I. Mark,V. Lousse,J.-P. Vigneron,L.P. Biro 한국물리학회 2006 Current Applied Physics Vol.6 No.2
Photonic crystal type structures of biological origin were investigated by scanning electron microscopy (SEM) and UVVISreectance measurements. It was demonstrated that despite the moderate refractive index contrast between chitin and air, biologicalevolution developed in the wing scale nanostructures of butteries representing various families, numerous structures with dierentuse photonic structures, the UV protection mechanism of the high altitude ower Edelweiss has been investigated. We present fullysupportive data that the protection mechanism is based on coupling by nanostructured, highly selective couplers the harmful UVradiation in propagating modes along bers containing UV absorbing pigment.