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| Artist’s rendering of colloidal quantum dots (colored hexagons) cast from solution (puddles of liquid) onto a grating (groups of horizontal lines) and excited either electrically (lightning-like traces) or optically (narrow white beam coming from the right) to produce multicolor output (beams fanning out from the middle to the bottom-left). Image credit: Albin Guyot under use of Creative Commons license. |
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