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

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 In these windows, quantum dots, which are tiny semiconductor particles, absorb light at UV and infrared frequencies and re-emit it at the wavelengths that traditional solar cells capture. Robert F. Service, Science | AAAS, "Skyscrapers could soon generate their own power, thanks to see-through solar cells," 28 June 2018 There are some similarities here to Samsung's quantum dots implementation. Samuel Axon, Ars Technica, "The best PCs, gadgets, and wearables of CES 2018," 12 Jan. 2018 The background noise from quantum dots outside the cell was quenched by administering a third substance, called an etchant. Bradley J. Fikes, sandiegouniontribune.com, "Cancer imaging method produces clearer signals," 3 Sep. 2017 Researchers used fluorescent nanoparticles called quantum dots to produce an infrared signal. Bradley J. Fikes, sandiegouniontribune.com, "Cancer imaging method produces clearer signals," 3 Sep. 2017

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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The first known use of quantum dot was in 1985

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