Optical Composites
Alexander V. Semencha
Head of the Lab

Our Research

For over 15 years now, our group has been conducting research on different glassy and glassy-crystalline materials based on oxides, fluorides and chalcogenides.

Both fundamental foundations of glassy and crystalline states, and the practical applications of these materials are considered, including:

  • synthesis of glasses with the desired physicochemical properties (density, refractive index, coefficient of thermal expansion, spectral transparency, glass transition/softening temperature, microhardness, resistance to acids, alkalis or moisture);
  • synthesis of highly refractive immersion media (refractive index > 2.0);
  • purification of chemical constituents in static and dynamic vacuum;
  • synthesis of high-purity compounds: sulfides, halides, nitrides;
  • integrated development of technologies for production/deposition of bulk glassy coatings and microlenses, including automation of these processes using machine vision;
  • development and synthesis of luminescent glasses and glass ceramics for laser technologies, photonics and optical thermometry.

A wide array of equipment is available at the laboratory, allowing to carry out research on optical materials science, IR spectroscopy, refractometry, crystallography, dilatometry, differential thermal analysis, visible and IR luminescence, thermal diffusion, chemical composition analysis, structural and phase analysis.

  • Synthesis and studies of photo- and electroluminescence of materials in the visible and IR range (200–5000 nm)
  • Synthesis of high-purity oxide/halide/chalcogenide glassy materials
  • Synthesis of high-purity compounds
IR spectroscopy, including analysis of impurities/processing additives
  • Developing new glassy and crystalline materials with the desired physical and chemical properties
  • Refractometry and differential thermal analysis
  • Study of thermal diffusion in condensed materials
  • Measurements of mechanical and dilatometric properties of materials
  • Analysis of chemical, structural and phase composition
  • Developing optical materials for the IR region
  • Manufacturing of technical products from optical quartz for synthesis and industrial production
  • Developing technologies for deposition/production of glasses
  • Integrated development of technologies for the production/deposition of optical coatings/lenses on the surface of semiconductor structures, and automation of these processes
Design and development of customized furnaces for processing and synthesis of materials, laboratory test benches, and vacuum systems

Lab Staff

Selected Publications

Nd3+ concentration effect on luminescent properties of MgAl2O4 nanopowders synthesized by modified Pechini method
Golyeva EV, Vaishlia EI, Kurochkin MA, Kolesnikov EY, Lähderanta E, Semencha AV, Kolesnikov IE.
2020
Pub link
Water absorption and moisture resistance of As-S-Se-I glasses
10.1016/j.jssc.2020.121486
Dronova, Margarita, and Alexander Semencha
2020
Pub link
Production of an optical coating of low-melting glass for modern devices
10.1016/j.matpr.2019.12.396
Vibe, D. V., A. V. Semencha, and A. S. Gabriel
2020
Pub link
Mass Spectrometry of Chalcogenide Glass and Carbon Nitrides
10.1016/j.matpr.2020.01.035
Blinov, L. N., and A. V. Semencha
2019
Open access
Heat-resistant properties of construction composites based on nanocarbon cement (nCMC)
10.1134/S1087659620010022
Cherkashin A, Begich Y, Sherstobitova P, Semencha A, Doroshin I
2019
Open access
Modeling temperature dependent chemical reaction of intermetallic compound growth
Morozov A, Freidin A, Müller WH, Semencha A, Tribunskiy M.
2019
Pub link
Synthesis and Study of Nanocrystalline Mg2SiO4 Powder and Yttrium Aluminum Garnet
10.1109/EuroSimE.2019.8724531
Semencha A, Bochagina EV, Dronova MG.
2019
Pub link
Manifestation of Сoncentration Quenching of Fluoroaluminate Glasses Doped with Erbium
10.4028/www.scientific.net/KEM.822.334
Klinkov V, Semencha A, Tsimerman E, Osipov A, Dronova MG.
2019
Pub link
Effective Diagnostics of Internal Defects of Diamonds in the Near Infrared Range on the Basis of Immersion Medium Made from Low-Melting Chalcogenide Glass
10.4028/www.scientific.net/KEM.822.848
Semencha, Aleksander, et al.
2019
Pub link
Temperature sensor based on upconversion luminescence of Er3±doped fluoroaluminate glasses
10.1016/j.sna.2018.04.048
Klinkov, V., et al.
2018
Pub link
Large-scale laser fabrication of antifouling silicon-surface nanosheet arrays via nanoplasmonic ablative self-organization in liquid cs2 tracked by a sulfur dopant
10.1021/acsanm.8b00392
Kudryashov SI, Nguyen LV, Kirilenko DA, Brunkov PN, Rudenko AA, Busleev NI, Shakhmin AL, Semencha AV, Khmelnitsky RA, Melnik NN, Saraeva IN.
2018
Pub link
Spectral Properties of Doped Glasses of the 35Bi 2 O 3· 40PbO· 25Ga 2 O 3 Composition Synthesized in a Quartz Crucible
10.1134/S1087659618030057
Klinkov, V. A., and A. V. Semencha.
2018
Open access
Preparation of pure amorphous As 2 S 3 films of a stoichiometric composition
10.1134/S1087659618010042
Blinov LN, Semencha AV, Krylov NI.
2018
Open access
Determination of As SI‐Sb SI glasses short‐range structure via Raman spectroscopy, XPS and XRD
10.1111/ijag.12279
Kurushkin MV, Markov VA, Semencha AV, Mikhailov MD, Tverjanovich AS, Shakhmin AL, Larionova TV, Andreeva VD.
2018
Pub link
Advanced materials for fiber communication systems.
10.1007/978-3-319-67380-6_17
Klinkov, Victor A., Alexandr V. Semencha, and Evgenia A. Tsimerman.
2017
Open access
Adhesive As-S-Se-I immersion lenses for enhancing radiation characteristics of mid-IR LEDs operating in wide temperature range
10.1016/j.infrared.2016.07.020
Markov VA, Semencha AV, Kurushkin MV, Kurushkin DV, Klinkov VA, Petukhov AA.
2016
Pub link
Development of bismuth oxide-based nanopreparation for the destruction of malignant neoplasms: theoretical prerequisites, challenges, and practical approaches
10.1016/j.infrared.2016.07.020
Ovsyannikov VA, Zamoryanskaya MV, Semencha AV, Lycheva KA, Kol’tsova TS, Tolochko OV, Blinov LN.
2015
Open access
Vitreous arsenic sulfide doped with bismuth bromide
10.1134/S1063785015050119
Semencha, A. V., et al.
2015
Open access

Postgraduate courses

  • Mathematical Theory and Software for Computing Machinery, Systems, and Networks

Grants

  • Development of biofunctional glassy and composite materials for wearable electronics sensors
  • Mechanochemistry of novel anodes for lithium-ion batteries, RFBR
  • Production launch of chalcogenide optical glasses for the IR region, implemented at Microsensor Technology, LLC, St. Petersburg
  • Development of the composition and technology for depositing spinel coatings with a fundamental absorption edge in the visible range to cubic zirconium oxide, implemented at OJSC Yuvelit, Kostroma
  • Development of highly refractive immersion media based on chalcogenide glasses for studying the internal defects in diamonds
    • Methodology for modifying the chemical composition of chalcogenide glass and developing methods for applying it to IR photodiodes and LEDs
    • Technology for obtaining chalcogenide optical glasses for the IR range, implemented at Lexus Diamond (India), DiamC ad (Belgium), Flanders (Belgium), Octonus Software (Finland), JSC Kristall, Smolensk