Light-emitting diodes (LEDs) are regarded by the lighting industry as the future of artificial illumination. LEDs have been around for years, but they still hold only about a seven percent share of the light source market. What will it take for this technology to achieve critical mass? Sand, possibly. The biggest obstacles to LED adoption have been cost and cast. Seattle-based LumiSands showed manoparticles that could replace the more costly phosphors used today to correct the color balance of LEDs. The photo above is a polymer disc containing those particles, under UV light.
Seattle Lighting Startup Makes LED Color More Natural
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