Nobel Prize in Chemistry Awarded to 3 Scientists for Work With Quantum Dots
[ad_1]
The Nobel Prize in Chemistry was awarded on Wednesday to Moungi G. Bawendi, Louis E. Brus and Alexei I. Ekimov for the discovery and development of quantum dots, nanoparticles so small that their size determines their properties.
Quantum dots, described by the Royal Swedish Academy of Sciences as the “smallest components of nanotechnology,” are used in LED lights and television screens and can help guide surgeons as they remove cancer tissue.
“For a long time, nobody thought you could ever actually make such small particles,” Johan Aqvist, the chair of the Academy’s Nobel committee for chemistry, said at a news conference announcing the 2023 laureates. Presenting the topic with five colorful flasks lined up in front of him that he said contained quantum dots in a liquid solution, he said: “But this year’s laureates succeeded.”
The news of the laureates’ expected win had been reported earlier Wednesday morning in the Swedish news media, a highly unusual leak that was then reported by Reuters and The Associated Press several hours before the official announcement by the Royal Swedish Academy of Sciences, which awards the prize.
The Swedish news outlets cited what they said was an email from the Academy that had been mistakenly sent early. Reuters quoted Dr. Aqvist as saying, “It is a mistake by the Royal Swedish Academy of Sciences.” He noted that the committee’s meeting was due to start at 9:30 a.m. local time (2:30 a.m. Eastern) and added, “so no decision has been made yet. The winners have not been selected.”
Who are the winners?
Dr. Bawendi is a professor at the Massachusetts Institute of Technology, Dr. Brus is a professor emeritus at Columbia University, and Dr. Ekimov works for Nanocrystals Technology, a company based in New York State.
Why did the committee say they received the prize?
The recipients have all been pioneers in exploring the nanoworld — in which the size of matter is measured in millionths of a millimeter, the committee said.
In the early 1980s, Dr. Brus and Dr. Ekimov created quantum dots independently of each other. In 1993, Dr. Bawendi revolutionized the methods for manufacturing quantum dots, making their quality “extremely high” — a vital prerequisite for their use in today’s nanotechnology, the committee said.
For quantum dots to be highly useful, Dr. Aqvist said, they must be made in solution “with exquisite control of their size and surface.” Dr. Bawendi, he said, invented an ingenuous chemical method “for doing just this.”
“He could now make perfect nanoparticles of very specific size and very high quality,” Dr. Aqvist said.
“These achievements represent an important milestone in nanotechnology,” Dr. Aqvist said, adding that there are now numerous applications for quantum dots, from QLED screens to imaging in biochemistry, medicine and much more.
Who won the Nobel Prize in Chemistry in 2022?
The prize went to Carolyn R. Bertozzi, Morten Meldal and K. Barry Sharpless for work on click chemistry.
Who else has received a Nobel Prize in the sciences this year?
-
On Monday, the prize in Physiology or Medicine went to Katalin Karikó and Drew Weissman for a chemical modification to messenger RNA. The tweak led to the successful development of Covid-19 vaccines and saved millions of lives. Dr. Karikó is the 13th woman to win the Nobel Prize in this category.
-
On Tuesday, the prize in Physics was awarded to Pierre Agostini, Ferenc Krausz and Anne L’Huillier for techniques that illuminate the subatomic realm of electrons. Dr. L’Huillier is the fifth woman to be chosen for a Nobel in this category.
When will the other Nobel Prizes be announced?
-
The Nobel Prize in Literature will be awarded on Thursday by the Swedish Academy in Stockholm. Last year, Annie Ernaux was given the prize for work that dissected the most humiliating, private and scandalous moments from her past with almost clinical precision.
-
The Nobel Peace Prize will be awarded on Friday by the Norwegian Nobel Institute in Oslo. Last year, the prize was shared by Memorial, a Russian organization; the Center for Civil Liberties in Ukraine; and Ales Bialiatski, a jailed Belarusian activist.
-
Next week, the Nobel Memorial Prize in Economic Sciences will be awarded on Monday by the Royal Swedish Academy of Sciences in Stockholm. Last year, Ben S. Bernanke, Douglas W. Diamond and Philip H. Dybvig shared the prize for work that helped to reshape how the world understands the relationship between banks and financial crises.
All of the prize announcements are streamed live by the Nobel Prize organization.