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Moungi Bawendi, Louis Brus and Alexei Ekimov win Nobel Prize in Chemistry
Scientists Moungi Bawendi, Louis Brus and Alexei Ekimov have won the 2023 Nobel Prize in Chemistry for “the discovery and synthesis of quantum dots,” which illuminate computer monitors and television screens and are used by doctors to map tumours.
“The Nobel Laureates have succeeded in producing particles so small that their properties are determined by quantum phenomena. The particles, which are called quantum dots, are now of great importance in nanotechnology,” the Nobel Committee for Chemistry said in a statement on Wednesday.
“Researchers believe that in the future they could contribute to flexible electronics, tiny sensors, thinner solar cells and encrypted quantum communication.”
Bawendi, of MIT; Brus, of Columbia University; and Ekimov, of Nanocrystals Technology Inc., were honoured for their work with the particles just a few atoms in diameter, according to the Royal Swedish Academy of Sciences, which announced the award in Stockholm.
Nanoparticles and quantum dots are used in LED lights and can also be used to guide surgeons while removing cancer tissue.
Quantum dots’ electrons have constrained movement, and this affects how they absorb and release visible light, allowing for very bright colours.
The dots are nanoparticles that glow blue, red, or green when illuminated or exposed to light. The colour they emit depends on the size of the particles. Larger dots shine red, and smaller dots shine blue. The colour change is due to how electrons act differently in more or less confined spaces.
While physicists had predicted these colour-change properties as early as the 1930s, creating quantum dots of specific controlled sizes was not possible in the lab for another five decades.
In a highly unusual turn of events, Swedish media reported the names of the winners before the prize was announced.
“There was a press release sent out for still unknown reasons. We have been very active this morning to find out exactly what happened,” Hans Ellegren, the secretary-general of the academy, told the news conference where the award was announced. “This is very unfortunate, we do regret what happened.”
Ekimov, 78, and Brus, 80, are early pioneers of the technology, while Bawendi, 62, is credited with revolutionising the production of quantum dots “resulting in almost perfect particles. This high quality was necessary for them to be utilised in applications,” the academy said.
Bawendi told the news conference that he was “very surprised, sleepy, shocked, unexpected and very honoured”. “The community realised the implications in the mid 90s, that there could potentially be some real world applications,” Bawendi said.
Asked about the leak, he said he didn’t know about the prize until he was called by the academy.
The academy, which awards the physics, chemistry and economics prizes, asks for nominations a year in advance from thousands of university professors and other scholars around the world.
A committee for each prize then discusses candidates in a series of meetings throughout the year. At the end of the process, the committee presents one or more proposals to the full academy for a vote.
The more than century-old prize is awarded by the Royal Swedish Academy of Sciences and is worth 11 million Swedish crowns ($997,959).
(Aljazeera)
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Cabinet approves relief meaures to persons affected due to the War situation in the Middle East
Approval has been granted at the Cabinet Meeting held on 30-03-2026 to provide relief by granting up to rupees 20/- per litre of 92 Octane Petrol, and up to rupees 100/- per litre of Auto Diesel utilized for public transport to minimize the impact on the day today life of the people and the entire economy as a result of escalation of fuel prices due to the war situation in the Middle East region.
Apart from that, the Cabinet of Ministers approved the resolution furnished by the President in his capacity as the Minister of Finance, Planning and Economic Development to grant the following relief for low – income generators, electricity consumers, farmers, fisheries community, and small tea planters who have been exposed to the direct impact of the energy price hike:
(i) Provision of an additional special allowance for April 2026 to low-income generating categories registered under the ‘Aswesuma’ Programme, irrespective of family size: • Providing rupees 7,500/- to a family in the extremely poor category
Providing rupees 5,000/- to a family in the poor category
Providing rupees 2,500/- to a family in the transitional category
(ii) Instead of transferring the additional cost borne for engaging thermal power plants for generating electricity due to the fuel price hike and prevailing dry weather circumstances to the electricity consumers, the additional cost is to be borne by the Government for a period of 03 months so that a relief can be provided to the electricity consumers utilizing below 90 units.
(iii) Increasing the fertilizer subsidiary of rupees 25,000/- per hectare given at present up to rupees 30,000/- per hectare for the Yala season and increasing the fertilizer subsidiary of rupees 15,000/- per hectare given for additional crops that are cultivated in the paddy fields up to rupees 18,000/- per hectare for the Yala season.
(iv) Provide a 50 kg sack of Urea required for the Yala season at a fixed price of Rupees 10,200/- for farmers through Agrarian Services Centres.
(v) Provide a subsidiary of Rupees 50/- per liter for up to 25 liters per day per single-day fishing vessel, for a maximum of 25 days per month, for a period of three (3) months.
(vi) Provide a one-time payment of Rupees 150,000/- per multi-day fishing vessel engaged in fishing activities during the next three (3) months.
(vii) Provide an additional one-time fertilizer allowance of Rs. 5,000 per 50 kg bag of fertilizer to small tea cultivators, in addition to the existing Rs. 4,000 fertilizer subsidy provided by the Sri Lanka Tea Board.
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H.M.J.M.Herath appointed Commissioner General of Registration of Persons
The Cabinet of Ministers has approved the resolution furnished by the President in his capacity as the Minister of Digital Economy, to appoint H.M.J.M.Herath, a special Grade officer in Sri Lanka Administrative Service, who is currently serving as the District Secretary / Government Agent of Kegalle, to the post of Commissioner General of Registration of Persons
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Cabinet gives green light for old court complex buildings located in Galle Fort to be utilized for a Tourism Promotion Project.
The Galle fort which has been declared as a World Heritage by the United Nations Educational, Scientific, and Cultural Organization (UNESCO), attracts over three (3) hundred thousand local and foreign tourists per year.
Under the Greater Galle Development Plan (2021–2030), Galle Fort has been declared a World Heritage Tourism Zone. Further, having conserved the archaeologically valued buildings existing in the Galle Fort, the Urban Development Authority has planned an integrated development project programme, themed as the ‘Galle Regeneration Project’.
The Cabinet of Ministers has approved the resolution furnished by the Minister of Transport, Highways and Urban Development to relocate the High Court and Magistrate’s Court, which are currently functioning within Galle Fort, to the newly constructed court complex at Beligaha, Galle and to assign the existing buildings to the Urban Development Authority for the implementation of a tourism promotion project under a Public–Private Partnership (PPP) mechanism under this programme.
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