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July 1, 2026
Scientists Discover Why Europium 'Misbehaves'
Europium is a rare-earth metal responsible for the pure red glow in displays and other luminescent materials. For a long time, however, it refused to emit light when surrounded by certain organic molecules known as acylpyrazolone ligands. Chemists have now uncovered the reason: in europium complexes with these ligands, a 'black window' appears—a charge-transfer state in which the energy absorbed by the ligand is dissipated as heat rather than emitted as light. Understanding this mechanism opens the way to designing more efficient red-emitting materials for displays, fluorescent thermometers, and chemical sensors. The results have been published in Dalton Transactions.
June 30, 2026
HSE Economists Reveal How the Wage Gap Emerges Among Vocational School Graduates
HSE researchers examined the careers of 600,000 graduates of Russian secondary vocational education programmes and found that at the start of their careers, the gender wage gap reaches 23%, doubling after three years. This disparity is largely due to male and female students choosing different occupations when enrolling in vocational schools. These were the findings made by Sergey Roshchin, Natalya Yemelina, and Ksenia Rozhkova from of the HSE Faculty of Economic Sciences. The article has been published in Educational Studies.
June 25, 2026
HSE Researchers Make Aldehydes Perform Dual Function
Chemists from HSE University have discovered a way to carry out a reductive addition reaction without using an external reducing agent. Instead, the required 'resource' is supplied by the aldehyde itself, one of the reaction participants. This approach helps prevent unwanted side reactions, reduces toxicity, and simplifies the production and synthesis of organic molecules, including those used in the manufacture of medicines. The study has been published in Journal of Catalysis.

 

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Оценка влияния неравномерности поверхности оптических кристаллических микрорезонаторов на их дисперсионные характеристики

Компьютерная оптика. 2023. Т. 47. № 4. С. 580–587.
Данилин А. Н., Yurin A., Кондратьев Н. М., Ружицкая Д. Д., Дмитриев Н. Ю., Булыгин Ф. В., Семенчинский С. Г., Krasivskaya M., Миньков К. Н.

Advantages and prospects of using optical microresonators for the development of measuring instruments based on frequency combs are described. A principle of a frequency comb generator based on an optical microresonator is considered. An example of modeling the properties of microresonators used to generate optical frequency combs is considered. The influence of the nonuniformity of the optical microresonator’s generatrix on the value of the total dispersion has been studied. It is shown that the presence of nonuniformity on the surface affects the dispersion parameters and can also lead to the effect of mode shape splitting in microresonators. We have shown that this effect is particularly dependent on the position and the value of the depth of nonuniformity.

Research target: Engineering and Technology
Language: Russian
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Keywords: метод конечных элементовfinite element methodwhispering-gallery-mode microresonatorsdispersion engineeringоптические микрорезонаторы с модами типа шепчущей галереиинжиниринг дисперсии
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