Vibrant displays head to market, invisibility cloaks become more practical, and batteries store more energy.
Light warp: This is the largest sheet ever made of a metamaterial that can bend near infrared light backward. John Rogers
Tiny crystals called quantum dots emit intense, sharply defined colors. Now researchers have made LED displays that use quantum dots. Five years ago, QD Vision demonstrated its first, rudimentary one-color displays, using the nanoscale crystals. This year it demonstrated a full-color display capable of showing video. The company says it could be another five years before the technology appears in commercial displays. Samsung might get there first—it's also developing quantum-dot displays, and demonstrated a full-color one in February.
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