quantum dot


Definition of quantum dot

: a semiconductor nanocrystal exhibiting quantum mechanical effects that allow it to mimic the properties of an atom The quantum dot is a semiconducting (or metallic) region so tiny that it is essentially confined in all three dimensions; like an atom, it contains a finite number of charges and has discrete energy levels.— Barbara Goss Levi

Examples of quantum dot in a Sentence

Recent Examples on the Web

Experiments revealed that two quantum dots can, indeed, emit identical photons. Chris Lee, Ars Technica, "Identical photons generated 150 million kilometers apart," 22 Aug. 2019 South African researchers have solved this biological conundrum with a surprising tool: nanoparticles called quantum dots. Scientific American, "Ballistic Maggots, Synthetic Winks and Why You’re Not Goop: This Week’s Best Science GIFs," 9 Aug. 2019 For its part, the emerging QLED tech is called direct-view quantum dot (DV-QLED). Joe Lindsey, Popular Mechanics, "OLED or QLED: Which TV Is Right for You?," 4 June 2019 That’s what Allison Harn of the quantum dot company Nanosys did a few years back for a blog post. Adam Rogers, WIRED, "The Colorful Science of Why Fireworks Look Bad on TV," 4 July 2019 And in 2013, German scientists built an experimental equivalent of Maxwell's demon out of a pair of interacting quantum dots (tiny bits of semiconductors just a few nanometers wide). Jennifer Ouellette, Ars Technica, "Penn State scientists build quantum version of Maxwell’s demon," 12 Sep. 2018 The 2019 model will feature Samsung’s quantum dot display technology for a wider HDR color palette. Chris Welch, The Verge, "Samsung’s stylish The Frame and Serif 4K TVs will soon come in more sizes with better picture quality," 19 Dec. 2018 Boyden says everything from metal to quantum dots to DNA strands have patterns that could be fabricated in the extreme miniature. David Grossman, Popular Mechanics, "Honey, I Shrunk Everything: MIT Scientists Can Shrink Objects to the Nanoscale," 18 Dec. 2018 Unsurprisingly, after five and a half years of studying nano-optoelectronics, light-emitting quantum dots started to bore Anikeeva. Jacqueline Detwiler, Popular Mechanics, "The Heroes of Science Who Are Unlocking the Brain," 3 Oct. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'quantum dot.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of quantum dot

1985, in the meaning defined above

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3 Sep 2019

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The first known use of quantum dot was in 1985

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concealment of treason or felony

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