Diffraction from relief gratings on a biomimetic elastomer cast

Raphael A. Guerrero, a, and Erika B. Aranas a a Department of Physics, Ateneo de Manila University, Loyola Heights, Quezon City, Philippines Received 4 March 2010; revised 12 May 2010; accepted 11 June 2010. Available online 18 June 2010. Materials Science and Engineering: C Volume 30, Issue 8, 12 October 2010, Pages 1170-1174

Biomimetic optical elements combine the optimized designs of nature with the versatility of materials engineering. We employ a beetle carapace as the template for fabricating relief gratings on an elastomer substrate. Biological surface features are successfully replicated by a direct casting procedure. Far-field diffraction effects are discussed in terms of the Fraunhofer approximation in Fourier space.

Keywords: Soft lithography; Relief gratings; Biomimetics

Source: Science Direct