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

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.

See More

First Known Use of quantum dot

1985, in the meaning defined above

Keep scrolling for more

Learn More about quantum dot

Share quantum dot

Statistics for quantum dot

Look-up Popularity

Time Traveler for quantum dot

The first known use of quantum dot was in 1985

See more words from the same year

Comments on quantum dot

What made you want to look up quantum dot? Please tell us where you read or heard it (including the quote, if possible).


a state of commotion or excitement

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Roman Mythology Quiz

  • the-triumph-of-venus-by-alessandro-magnasco
  • Boreal comes from the name of the ancient Greek god of which wind?
True or False

Test your knowledge - and maybe learn something along the way.

Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!