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QLEDs â light-emitting diodes that rely on nanocrystals called quantum dots â are usually made with toxic heavy metals. A strategy has been developed to make QLEDs with a performance comparable to that of commercially available technologies but using a more environmentally friendly alloy of zinc, selenium, telluriu
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NSF moves to overhaul funding approach in line with White House priorities
2+ day, 9+ hour ago (278+ words) The major funder of basic science has not said how its new initiatives will be funded — but staff worry streamlined approach will further squeeze cash for core sciences....