Nobel Prize in Chemistry Awarded for Discovery of 'Quantum Dots' to Three Scientists

The 2023 Nobel Prize in Chemistry was awarded to Mounji Bawendi, Louis Bruce, and Alexei Ekimov for their discovery of 'quantum dots.' Quantum dots are used to create colors in television screens, LED lights, and tools that assist surgeons in visualizing blood vessels in tumors. The Nobel Academy stated that these scientists have created diverse applications across various fields by adding 'color to nanotechnology.' The Nobel Academy's statement said, 'Researchers believe that these findings could be used in flexible electronic technology, small sensors, thinner solar cells, and encrypted quantum communications in the future.' This award, granted by the Royal Swedish Academy of Sciences, is worth 11 million Swedish kronor (approximately one million dollars). The head of the Nobel Chemistry Committee noted that one of the 'amazing and unusual' features of quantum dots is that they produce different colored lights depending on the size of the particles while maintaining their atomic structure. Quantum dots are composed of only a few thousand atoms. In size, a quantum dot compared to a soccer ball is like a soccer ball compared to the Earth. When light passes through quantum dots, a specific color is emitted. Larger dots shine red, while the smallest dots are green or blue. The smallest change in particle size can alter its color in the color spectrum. In the early 1980s, Alexei Ekimov, one of the winners, discovered that the color of glass changes with the size of the copper chloride molecules present in it. A few years later, Louis Bruce, another Nobel laureate this year, made a similar discovery regarding the color of liquids. In 1993, Mounji Bawendi, the third winner, made a breakthrough in producing quantum dots that consisted of clusters of several hundred to several thousand atoms. Bawendi, born in Paris and raised in Tunisia and the USA, has been teaching at the Massachusetts Institute of Technology (MIT) since 1996, Bruce is a retired professor at Columbia University, and Ekimov is a senior scientist at a nanocrystal technology company. Ekimov was born in the Soviet Union and worked for the 'Vavilov' state institute before immigrating to the USA. In a rare occurrence, the names of these three individuals were leaked to the media before the official announcement. The secretary of the Royal Swedish Academy of Sciences expressed regret over this incident and stated that they are investigating the reason behind it. While the Nobel Prizes in Chemistry are sometimes overshadowed by the Nobel Prize in Physics and its famous winners like Albert Einstein, Nobel Chemistry laureates include several prominent figures such as Ernest Rutherford, the discoverer of the atomic nucleus, and Marie Curie. What is the significance of the work of this year's three Nobel Prize winners in Physics? Explanations by Amirhossein Ganjbakhsh. The Nobel Prize in Medicine 2023 was awarded to two scientists from the University of Pennsylvania in the USA. Dr. Farin Kamangar narrates the importance of the work and research of the Nobel Medicine winners of 2023. Speculation about the Nobel Peace Prize winner; Narges Mohammadi is among the considered candidates.