Category: Uncategorized

POWERFUL GATES. Photonic crystals "makes it possible to control light with amazing facility and produce effects that are impossible with conventional optics." " "In: Nano-society: Pushing the Boundaries of Technology, (Section 4.5), By Michael Berger View in LinkedIn

PEACOCK PHOTONIC CRYSTALS. "By creating periodic structures out of materials that differ in their dielectric constants, it becomes possible to guide the flow of light through photonic crystals ... Similar to how electrons are directed through doped regions of semiconductors." https://lnkd.in/dhTvJv8 View in LinkedIn

PHOTONIC CRYSTALS ACT LIKE SEMICONDUCTORS. "Photonic crystals ... are similar to semiconductors, except that the electrons are replaced by photons (i.e., light)." https://lnkd.in/dhTvJv8 View in LinkedIn

PEACOCK FEATHER LIGHT GATES, "By varying the lattice constant and the number of periods in the photonic crystal structure, peacock feathers provide several 2D photonic crystal structures with different colors. The ordered melanin arrays within peacock feathers are ... natural photonic crystals that have the ability of controlling visible light." https://lnkd.in/dhTvJv8 View in LinkedIn

PEACOCK CRYSTALS create "blocking and passing bands for photons similar to those of electrons in a semi conducting crystal ... a “partial” band gap, in which light is blocked (and therefore reflected) only at certain polarizations and angles of incident." https://lnkd.in/dQypc_D View in LinkedIn

PEACOCK PHOTONIC CRYSTALS. "A spatially periodic dielectric material (in the case of peacock feather, melanin rods interspaced with air holes and keratin) that inhibits the propagation of light waves at certain frequencies and energies." https://lnkd.in/dQypc_D View in LinkedIn

STRUCTURE OF THE PEACOCK TAIL FEATHER. "A barbule consists of a medullar core ... enclosed by a cortex layer ... the cortex of all differently colored barbules contains a 2D photonic-crystal structure made up of melanin rods connected by keratin." https://lnkd.in/d4FMTAH View in LinkedIn

THE PEACOCK FEATHER "has a central stem with an array of barbs on each side. On each side of a barb there is an array of flat barbules. Each barbule has round indentations ... which disperse the incident light, causing coloration." https://lnkd.in/d4FMTAH View in LinkedIn

"STRUCTURAL COLORS are mainly based on several elementary optical processes including thin-layer interference, diffraction grating, light scattering, photonic crystals ... However, in nature, these processes are somehow mixed together to produce complex optical phenomena." These are responsible for peacock feather colors. http://iopscience.iop.org/0034-4885/71/7/076401 View in LinkedIn

NEWTON'S 1704 "TREATISE ON OPTICS". "Sir Isaac Newton, the 17th- and 18th-century British mathematician and physicist, was among the first to suggest that tiny, layered structures were responsible for producing color in peacock feathers, and other iridescent insects and birds." http://news.nationalgeographic.com/news/2003/10/1016_031017_peacockcolors.html View in LinkedIn