[PAST EVENT] Saturday Morning Physics: "How Butterfly Wings get their Colors" (Prof. Ale Lukaszew)
April 27, 2013
11am - 12pm
Structural color is caused by the interaction of light with nanoscale periodic structures with geometries on the order of magnitude of visible light wavelengths. Metamaterials are artificial electromagnetic media achieved by structuring materials on scales smaller than the wavelength of incident light. For example, metallic metamaterials can have frequency selective surface functionality to the visible light domain thus controlling the metal's reflection spectrum and its perceived color without any chemical modification. More recently surface plasmons have been used to control colors of materials. In this talk I will elaborate on these ideas and describe a few examples, some from nature.
[[wdeconinck, Wouter Deconinck]]