47 stories in total
Elena Kopoleva, Elena Petrova, Maria Timofeeva and Pavel Filatov won grants in a competition for undergraduate and postgraduate students at St. Petersburg universities.
Iriney Vasilev will study optical methods for measuring temperature at the nanoscale using upconversion nanoparticles in biological media.
Lidia Mikhailova gave an invited lecture at the 10th International School for Young Scientists «Nonlinear and Biomedical Photonics» in Novosibirsk.
Pavel Filatov has become head of ITMO Collab, ITMO’s competition of interdisciplinary student projects, where the best teams receive up to 1,000,000 rubles.
Members of our team have published a paper on nanoparticles carrying microRNA-200a for treating acute and chronic liver diseases.
Konstantin Arabuli, Nikolaj Zhestkij, Lidia Mikhailova and Maria Timofeeva have completed their PhD studies. Next comes the defense of their dissertations.
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Physically unclonable functions (PUFs) are systems with random structural features that arise uncontrollably during manufacturing. With proper optical readout and computer processing, they can serve as sources of unique keys for anti-counterfeiting or cryptography. A logical next step for such systems is to shrink the characteristic scale of their randomness to the nanoscale, which would make possible higher-capacity sources of cryptographic keys. Such a transition, however, faces fundamental problems related to the diffraction limit of optical readout.
Members of our center, together with colleagues from Université de Lorraine and New Uzbekistan University, proposed a solution to this problem using multiresonant gold–silicon particles. The unique spectral features of these particles’ broadband photoluminescence were used as «fingerprints» of their nanoscale structural inhomogeneities. As a result, an ultrahigh storage density of unique information in these physically unclonable functions was achieved, at least 2–3 orders of magnitude higher than values reported in other works. The paper is published in Nature Communications (IF = 14.9): https://www.nature.com/articles/s41467-025-60121-9
