(a) Scanning electron microscopy image of the fabricated 1D plasmonic spectroscope with gradually changing periods from 400 to 200 nm (from left to right)
(b) Optical microscopy image of the plasmonic spectroscope illuminated with white light
(c) SEM image of the fabricated 2D spoke structure
(d) Optical microscopy images of the spoken structure illuminated with unpolarized light (centre) and polarized light (four boxes)
Only a small percentage of backlight actually makes its way out through the multiple layers that make up the ubiquitous LCD displays we use today. That may change with the development of new filter technology at the University of Michigan. White light is sent through tiny, precisely spaced gaps on nano-thin sheets of aluminum and is said to result in brighter, higher definition color reproduction. Other benefits of the technology include efficiency gains and simpler manufacturing.