@article{(Open Science Index):https://publications.waset.org/pdf/4809, title = {Broad-Band Chiral Reflectors based on Nano-Structured Biological Materials}, author = {D.J. Brink and N.G. van der Berg and L.C. Prinsloo and A. Botha}, country = {}, institution = {}, abstract = {In this work we study the reflection of circularly polarised light from a nano-structured biological material found in the exocuticle of scarabus beetles. This material is made of a stack of ultra-thin (~5 nm) uniaxial layers arranged in a left-handed helicoidal stack, which resonantly reflects circularly polarized light. A chirp in the layer thickness combined with a finite absorption coefficient produce a broad smooth reflectance spectrum. By comparing model calculations and electron microscopy with measured spectra we can explain our observations and quantify most relevant structural parameters.}, journal = {International Journal of Physical and Mathematical Sciences}, volume = {3}, number = {9}, year = {2009}, pages = {603 - 607}, ee = {https://publications.waset.org/pdf/4809}, url = {https://publications.waset.org/vol/33}, bibsource = {https://publications.waset.org/}, issn = {eISSN: 1307-6892}, publisher = {World Academy of Science, Engineering and Technology}, index = {Open Science Index 33, 2009}, }