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Terahertz Hot Electron Bolometer Coherent and Direct Detectors Utilizing Si Waveguiding Structures
IEEE 8th All-Russian Microwave Conference (RMC). 2022. Vol. 2022. P. 19–22.
Terahertz coherent and direct detectors are in demand by numerous scientific and practical applications. Both cryogenic and room temperature detectors find use in astronomical, medical and security systems. Driven by the enlarged society needs for data transfer rates, they are also becoming of interest in terahertz communication area. Integrated Si photonic crystals are recently proposed as beneficial platform for terahertz integrated circuits. Some designs of Si power distribution networks including basic passive components already appear. However, development of nonlinear frequency conversion devices naturally compliant with the platform is at an early stage. In addition to integrability, the platform enables significant reduction of propagation losses as compared to widely used metallic waveguides at terahertz frequencies. In this paper, we overview conventional designs of input optics and power distribution networks of terahertz detectors. We also report on our recent developments in design and fabrication of terahertz HEB-based coherent and direct detectors making use of Si waveguiding structures.
Language:
English
Keywords: photonic crystal waveguide
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Dynamic Adaptive Streaming over HTTP (DASH) technology powers most multimedia services. Its specific features (re-buffering, quality switching, etc.) necessitate the development of specialized methods for assessing user subjective quality of experience (QoE) based on objective parameters. This article examines the impact of various metrics on QoE and presents assessment models with Spearman correlation coefficients up ...
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Added: June 27, 2026
Springer, 2026.
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We demonstrate and rationalize the effect of Au nanoparticles (NPs) on the hierarchical g-C3N4/CeO2 heterojunction. g-C3N4/CeO2 decorated with monodispersed plasmonic Au NPs was synthesized. Detailed analyses showed that CeO2 nanocubes and monodispersed Au NPs were evenly distributed over the 2D g-C3N4 surface, forming a robust interface enriched with abundant active sites. The structure enabled efficient separation of photogenerated charge ...
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Niobium-doped TiO2 (Nb-TiO2), demonstrates dual functionality as an efficient photocatalyst for dye degradation and a promising photoelectrocatalyst for water oxidation. Nb incorporation via a facile hydrothermal method was confirmed by XRD (Rietveld refinement), XPS, TEM, FT-IR, Raman, and BET analyses, indicating successful lattice doping and structural modification. Photocatalytic dye degradation experiments were conducted using a model ...
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Гущина В. А., / Series chemrxiv-2023-vpzhz-v2 "ChemRxiv". 2023.
All-inorganic perovskite CsPbBr3 and Cs4PbBr6 nanoparticles are being intensively studied due to their unique properties and wide range of applications; however, however, the nature of their optical properties is not yet fully understood due to the difficulty of synthesis of singlephase nanoparticles. In this article we describe the features of the synthesis of single-phase particles ...
Added: May 14, 2026
Гущина В. А., Mendeleev Communications 2025 Vol. 35 No. 2 P. 193–195
All-inorganic perovskite CsPbBr3 and Cs4PbBr6 nanoparticles are intensively studied for their unique optical properties, though synthesizing single-phase nanoparticles has posed challenges. Detailed synthesis method of CsPbBr3 and Cs4PbBr6 single-phase nanoparticles and their chemical and phase analysis are described. Distinctive optical characteristics, such as photoluminescence, optical band gap and the Urbach tail region, are revealed and explained within the current ...
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Гущина В. А., Physics of Complex System 2026 Vol. 7 No. 1 P. 3–15
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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
Методика оценки функциональной безопасности маршрутизаторов на основе вероятностно-физической модели
Polesskiy S., Tumkovskiy S., Tsvetkov V. et al., Информационно-управляющие системы 2026 № 2 С. 49–60
The functional safety of network routers used in critical information infrastructure requires quantitative assessment based on dependability data. Existing safety assessment methods do not account for the influence of physical degradation mechanisms under real operating conditions, which reduces the credibility of the results and complicates the adoption of well-founded engineering decisions. Purpose: Is to improve ...
Added: May 12, 2026
Гущина В. А., Russian Journal of Inorganic Chemistry 2024 Vol. 69 No. 6 P. 940–948
Currently, ABX3 nanoparticles (NPs) based on lead halides attract the attention due to their unique optical properties and a wide range of applications. The preparation of NPs with lead as a partial or complete replacement is particularly interesting because of the toxicity of this chemical element and most of its compounds. In this study, we propose a ...
Added: May 6, 2026
Honolulu: IEEE, 2025.
International Conference on Computer Vision Workshops (ICCVW), Honolulu, HI, USA, 2025 ...
Added: May 3, 2026
Solovyev Roman A., Telpukhov Dmitry, Shafeev I. et al., Technologies 2026 Vol. 14 No. 3 Article 169
With the continuous scaling of semiconductor design technologies, evaluating static IR drop has become a critical bottleneck in the physical synthesis flow. This paper presents a machine learning-based framework that transforms the power delivery network (PDN) analysis problem into an image-to-image translation task using a U-Net architecture with MaxViT and EfficientNet encoders. By implementing a ...
Added: May 3, 2026
A. N. Prikhodko, I. I. Belikov, A. V. Lvov et al., St. Petersburg Polytechnical University Journal: Physics and Mathematics 2022 Vol. 15 No. 3.3 P. 345–349
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