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Определение солености морской воды по измерениям показателя преломления
Оптика атмосферы и океана. 2023. Т. 36. № 3. С. 244–248.
Methods for measuring the salinity of seawater are considered. The results of an experimental study of samples of common and sea salt solutions with different salinity, poured into a hollow trihedral optical glass prism are presented. To measure the angles of refraction of light, a goniometric system was used, the minimum deviation method was implemented, which has a high accuracy of determining the refractive index. With dispersion analysis of experimental results, it was proved that the refractive index of water does not depend on its salt composition. An equation is proposed that describes the dependence of the refractive index on salinity and temperature for a fixed wavelength
Language:
Russian
Dmitriev A., Kornilov V., Batienkov R., Lecture Notes in Civil Engineering 2026 Vol. 886 P. 249–255
Numerous studies have provided compelling evidence that the probability distribution of avalanche sizes follows a power law, and that 1/f noise is present in the stochastic dynamics of landslides. We present a theoretical explanation of these phenomena within the framework of self-organized criticality theory, proposing a discrete-time model in the form of a sandpile cellular ...
Added: October 13, 2026
Dmitriev A., Shulman I., Lebedev A., Studies in Computational Intelligence 2026 Vol. 1265 P. 266–273
A discrete-time model is presented for the self-organization of the X/Twitter social network to the edge of a phase transition, characterized by avalanche-like propagation of information in the network. The model is based on the analogy between the critical dynamics of the X social network and sandpile cellular automata with Manna rule on the Chung-Lu ...
Added: October 13, 2026
Arutyunov K., Kharitonov I. A., Petrosyants K. O., JETP Letters 2026 Vol. 124 No. 6 P. 1–16
Superconducting properties of metallic micro- and nanowires can be entirely different from those of bulk superconductors. Of particular interest is the nonequilibrium current-induced state of a quasi-one-dimensional superconducting channel. The most interesting phenomenon here is the stepped I–V characteristic, explained by a process known as phase slip center activation. If the origin of such step-like ...
Added: October 13, 2026
Makarov D. M., Kalikin N., Fashchevsky K. A. et al., Electrochimica Acta 2026 Vol. 579 Article 150159
Machine learning (ML) has become a powerful tool for accelerating the development of carbon-based supercapacitors;
however, most published models assume that a single predictive framework can describe both conventional
porous carbons and hybrid carbon electrodes. Here, we test this assumption using a comprehensive
benchmark dataset and an extended literature-curated dataset enriched with synthesis- and electrolyte-related
descriptors. Three ML algorithms ...
Added: October 13, 2026
Махлуф М., Ozhegov R., Elezov M. et al., Фотоника 2026 Vol. 20 No. 6 P. 414–423
This paper compares the ranging precision of direct time-of-flight (dToF) and non-line-of-sight (NLOS) LiDAR architectures, both using a superconducting nanowire single-photon detector (SNSPD). Both systems operate at 1550 nm with a 50 ps pulsed laser and time-correlated single-photon counting (TCSPC). The dToF configuration achieved approximately 100 µm precision at 10 m, while the NLOS configuration achieved 500 µm precision for ...
Added: October 12, 2026
Gorbunov A. A., Исаев Е. А., Приборы и системы. Управление, контроль, диагностика 2026 № 1 С. 42–46
В статье рассматриваются современные тенденции в развитии дата-центров, специализирующихся на обработке биоинформатических и
биомедицинских данных. Особое внимание уделено применению искусственного интеллекта для оптимизации работы дата-центров и анализа больших объемов биологических данных. Представлен обзор современных технологий и архитектурных решений, позволяющих обрабатывать растущие объемы данных в области биоинформатики и биомедицины. Обсуждаются перспективы развития специализированных
дата-центров в контексте экспоненциального роста ...
Added: October 12, 2026
Gorbunov A. A., Григорьев А. А., Демидов Л. Н. et al., Приборы и системы. Управление, контроль, диагностика 2025 № 7 С. 20–24
Быстрое развитие технологии квантовых вычислений потенциально может произвести революцию в сложных вычислениях в
физических, химических и биологических областях за счет использования квантовой суперпозиции и запутанности. Квантовые компьютеры используют кубиты, способные существовать в нескольких состояниях одновременно, в отличие от классических битов.
Эта функция позволяет хранить и обрабатывать больше информации, что дает значительное преимущество при решении задач с
обширным пространством ...
Added: October 12, 2026
Вишняков Г. Н., Yurin A., Minaev V. et al., Измерительная техника 2026 Т. 75 № 2 С. 46–57
The problems of metrological assurance for measuring the refractive index of solid optical materials (silicon, germanium, etc.) used in the infrared range of the spectrum (infrared materials) are considered. The refractive index of optical materials in the infrared wavelength range must be known with high accuracy when developing optics for thermal imagers, night vision devices, ...
Added: May 14, 2026
Yurin A., International Journal of Applied Glass Science 2026 Vol. 17 No. 2 Article e70022
This article presents a three autocollimation method (TAM) for measuring the refractive index (RI) of optical glass. The popular minimum deviation method (MDM) for RI measurement is accurate, but it is very laborious, since the procedure of determining the minimum possible angle requires many iterations. TAM allows the calculation of RI based on the measurement ...
Added: January 23, 2026
Yurin A., Vishnyakov G., Minaev V., Physica Scripta 2026 Vol. 101 Article 015501
This paper describes goniometric methods for measuring the refractive index (RI) based on measuring the angles of light deviation with a triangular prism made from the material under study. Three-sided goniometric methods (TGM) involving measuring the angles of light deviation on all three faces of a prism and determining the RI by solving a system ...
Added: December 22, 2025
Yurin A., Krasivskaya M., Физические основы приборостроения 2025 Т. 14 № 2(56) С. 70–73
The paper considers the error of the autocollimation method for measuring the refractive index of triangular prisms and its comparison with the error of the modified method, in which autocollimation occurs from an additional mirror mounted on the path of the beam refracted by the prism. The analysis of the dependence of the measurement error ...
Added: November 12, 2025
Vlasov V., Aleksei Y. Kuzin, Florya I. et al., Journal of Energy Storage 2025 Vol. 111 Article 115349
This research presents an advanced method for measuring State of Charge (SoC) in Vanadium Redox Flow
Batteries (VRFB) using Refractive Index (RI) combined with Machine Learning (ML). The study comprised of
three primary phases: ex-situ measurements, in-operando measurements, and ML model training. Initially, tests
were conducted using a hybrid photonic-microfluidic sensor on simulated solutions mimicking specific VRFB
SoCs. Subsequently, ...
Added: February 26, 2025
Yurin A., Vishnyakov G., Minaev V. et al., Measurement Science and Technology 2024 Vol. 35 No. 12 Article 125204
We present a new autocollimation method for measuring the refractive index (RI) of transparent triangular prisms. The classical autocollimation method is simple, but due to total internal reflection it is suitable only for prisms with small angles, which limits the accuracy of RI measurements. The proposed new method makes possible the autocollimation measurements of the RI for prisms with ...
Added: September 23, 2024
Yurin A., Вишняков Г. Н., Minaev V., Компьютерная оптика 2024 Т. 48 № 2 С. 225–230
Dispersion characteristics of optical glass are considered. An approach to research of dispersion characteristics of optical glass is proposed, requiring the measurement of the refractive index at only three wavelengths, which simplifies the measurement process compared with the use of the widely used Sellmeier equation. An approximation function for the refractive index of optical glass ...
Added: January 2, 2024
Yurin A., Vishnyakov G., Minaev V. et al., Measurement Science and Technology 2024 Vol. 35 No. 3 Article 035204
Added: December 19, 2023
Вишняков Г. Н., Yurin A., В кн.: HOLOEXPO 2023: тезисы докладов 20-й международной конференции по голографии и прикладным оптическим технологиям.: СПб.: Санкт-Петербургский государственный электротехнический университет ЛЭТИ им. В.И.Ульянова (Ленина), 2023. С. 250–253.
Рассмотрены гониометрические методы измерений показателя преломления оптически прозрачных материалов. Предложен модифицированные метод, основанный на методе наименьшего отклонения, позволяющий определять показатель преломления трехгранных призм с неизвестными преломляющими углами. В предложенном методе производят измерения углов отклонения света на трех гранях призмы, а показатель преломления материала и преломляющие углы определяют из решения системы уравнений. Приведена оценка влияния погрешности ...
Added: November 19, 2023
Yurin A., Вишняков Г. Н., Minaev V. et al., Научно-технический вестник информационных технологий, механики и оптики 2023 Т. 23 № 5 С. 1073–1076
The paper proposes a modified method for measuring the refractive index of a triangular prism using an autocollimation angle measuring system designed to measure angles formed by flat surfaces of objects. The method involves using a fixed mirror to reflect the refracted beam, measurement of the angles of incidence of the beam on the face ...
Added: October 13, 2023
Yurin A., Vishnyakov G., Minaev V. et al., Optik 2023 Vol. 292 Article 171400
We present a modified method for measuring the refractive index (RI) based on the minimum deviation technique, which allows us to determine the RI of transparent triangular prisms with unknown apex angles. In the proposed method, the angles of light deviation are measured on three faces of the prism, and RI of the material and ...
Added: September 25, 2023
Vishnyakov G., Yurin A., Minaev V. et al., Metrologia 2023 Vol. 60 No. 4 Article 045007
We present a method for measuring the refractive index (RI) and spectral characteristics of transparent triangular prisms based on the minimum deviation technique. The proposed method has been developed to automatically measure RI simultaneously for three different wavelengths to determine the spectral dependence of RI. A high precision dynamic goniometer with a He-Ne ring laser ...
Added: June 28, 2023
Yurin A., Вишняков Г. Н., Minaev V., Компьютерная оптика 2023 Т. 47 № 3 С. 392–397
Methods for measuring the refractive index of optically transparent dielectric materials are considered. Modified methods based on the methods of minimum deviation and constant deviation are proposed and allow determining the refractive index of triangular prisms with unknown apex angles. In the proposed methods, the angles of light deviation on three faces of the prism ...
Added: April 28, 2023