Research Areas Areas

    International research and education centre for Physics of nanostructures

    Research areas Chiral nanocrystals Chirality is one of the most fascinating phenomena in the natural world. Chiral compounds have already played an extremely important role in the fields of chemistry, pharmacology, biology, and medicine. Currently chiral nanocrystals are an emerging class of nanostructures that attract considerable attention because the chirality of the nanocrystals can have a tremendous effect on the nanotoxicology and nano-bio-technology fields. The biocompatibility of chiral nanocrystals can be improved dramatically compared to achiral nanocrystals. It will be possible to embed them in biosystems playing by molecular “rules”. We have learned how to separate enantiomers of nanocrystals, we have shown that chirality is an intrinsic property of semiconductor nanocrystals, and now we are working on further investigation of different aspects of interaction between chiral nanocrystals and biosystems. Research group: Anatoly Fedorov, Alexander Baranov, Vladimir Maslov   Infrared quantum dots  One of the key problems in modern materials science is the creation of new functional materials with improved optoelectronic and operational properties that can be purposefully changed depending on the field of their application. This is possible with the use of nanostructured multicomponent materials combining the unique properties of nanoobjects of different nature, such as ultra-thin two-dimensional nanomaterials (for example, graphene), metallic nanoparticles, and semiconductor nanocrystals. Semiconductor nanocrystals with electronic transitions in the near-infrared spectral range are promising materials for many applications, such as solar energy, telecommunications systems, and biomedicine. Within the framework of our research projects we study PbS quantum dots  with optical transitions in the spectral range of 0.8–2.0 µm. These quantum dots possess some unique properties, such as efficient multi-exciton generation, large static dielectric constants, highly symmetrical sodium chloride structure, and narrow fundamental bandgaps. Small and equal masses of the charge carriers and large Bohr radius (18 nm) let one use PbS quantum dots  as a model object for investigation of the strong quantum confinement regime. PbS quantum dots  of different sizes demonstrate unusual optical properties, namely, large Stoke shift and surprisingly long photoluminescence decay times. Moreover, they possess anomalous size dependence of their photoluminescence lifetimes, which has never been reported for other semiconductor quantum dots. Another interesting and perspective feature of these quantum dots is the ability to easily form ordered 2D and 3D structures, named superlattices and supercrystals. Such structures are based on a self-organization process and may become a new platform for high-performance solar cells and light detectors. Research group: Alexander Baranov, Petr Parfenov, Elena Ushakova, Alexander Litvin, Yulia Gromova   Theoretical investigation of nanocrystals  The theoretical group of the laboratory "Optics of quantum nanostructures", together with theoreticians from other laboratories, conducts research on the spectroscopy of anisotropic and chiral nanostructures, the study of vibrational resonance in quantum dots, and also the properties of two- and three-dimensional quantum dot supercrystals. Research group: Anatoly Fedorov, Eugene Perlin, Mikhail Leonov   Metal nanoparticles with plasmon resonances for optoelectronics and biomedicine In the laboratory “Surface Photophysics” we investigate composite materials with nanoparticles of noble metals. An attractive feature of noble metal nanoparticles is that all of their conduction electrons oscillate collectively in response to a external electromagnetic field. Due to this, their response to the external stimulus is larger as compared to other resonance systems. Simultaneously, a region of greatly enhanced electric field strength is formed in the close proximity of the nanoparticles. By placing in this region different resonance systems that possess useful but weak response to the electromagnetic field one can attain considerable enhancement of absorption and luminescence, as well as the rates of other processes. The obtained by us novel composites comprising epitaxial quantum dots in monocrystalline gallium arsenide are of special interest due to the feasibility of their use in optoelectronic devices. We also study composites with organic dyes, especially those that form J-aggregates. The application of nanoparticles in the investigation of processes in living cells is also underway. Research group: Tigran Vartanyan, Nikita Leonov, Nikita Toropov, Igor Gladskih, Anton Starovoytov   Hybrid structures based on semiconductor nanocrystals The development of new types of hybrid nanostructures in which the properties of individual components are uniquely combined together is a modern trend in nanotechnology. Currently, hybrid nanostructures based on colloidal semiconductor nanocrystals have a broad application range - from their use as LEDs, photovoltaic and photocatalytic elements and sensing systems to biomedical applications as luminescent biomarkers, drug delivery systems, and new photosensitizers for oncology theranostics. The goals of our research are the development the hybrid nanostructures based on semiconductor nanocrystals using organic molecules, graphene, and TiO2 nanoparticles for sensing and biomedical applications as well as the fundamental investigation of the pathways of electronic relaxation in these systems. For biomedical applications in particular, the chiral properties of hybrid nanostructures based on chiral semiconductor nanocrystals and molecules could play a key role in the functionality of these systems, and therefore the investigation of how the chiral properties of hybrid nanostructures influence their optical properties and functionality in living systems is also comprised in our research interests. Research group: Anna Orlova, Vladimir Maslov, Yulia Gromova, Anastasyia Visheratina, Kirill Annas, Ekaterina Kolesova, Ivan Reznik, Anastasia Bazhenova   Structure and optical properties of carbon nanomaterials: nanodiamonds, nanographite, carbon nanotubes, and graphene At present, the class of nanocarbon materials includes a variety of diverse structures of various dimensions, such as nanographites, nanodiamonds, nanotubes, and graphene. These materials possess unique combinations of electrical, mechanical, thermal, optical and other properties and can be used in a wide range of actual devices for nanoelectronics and nanophotonics, such as energy converters, energy storage devices, sensors for various substances, as well as for the creation of a variety of composite materials. Attaining optimal functional characteristics of nanocarbon materials, in particular luminescent properties, is directly related to their internal structure, which may change considerably depending on the synthesis conditions and additional processing. Thus, one of the main advantages of nanocarbon materials is the ability to tune and obtain desired optical properties due to variations in their internal structure. However, presently there is still no complete understanding of the mechanisms of growth of nanocarbon structures, as well as of the dependence of their optical properties on structure. Within the framework of our projects, in cooperation with laboratories for the synthesis of luminescent nanodiamonds, nanographites and graphenes in the USA, France and Japan, we investigate the effect of the structure and energy dissipation in nanocarbon materials on their optical properties, using the most modern experimental techniques of luminescence spectroscopy and micro-Raman analysis. Research group: Alexander Baranov, Kirill Bogdanov, Mikhail Baranov, Marianna Zhukovskaya, Anna Volokitina

    Videoinformation measuring system

       Video information measuring systems solve the problem of measuring of geometrical sizes, angles, displacements, coordinates and other parameters of extended and small objects with a precision no less, and sometimes exceed the precision of traditional optical-electronic devices. Research and development, conducting in the Department in the field of video information measuring systems conform to: – priority directions of development of science, technology and engineering in the Russian Federation: information and telecommunication systems; critical technologies: information technology, management and navigation systems;                                                 technologies of prevention and liquidation of emergency situations of natural and technogenic character; -perspective directions of development of the ITMO University: Photonics and Optoinformatics, optical and laser systems, materials, technologies.         

    Analysis and processing of images

    The image represents information about the world in the most visual form. Improving the quality, processing and analysis of the images helps to significantly increase their information content and to enhance the ability of perception of visual information about the objects of observation. Digital processing and image analysis are extremely diverse, and today there is almost no task pane, which, in varying degrees, not been image processing. In science - counting and measurement of particles, the study of dynamic processes, the detection of cosmic anomalies; in industry is the control of defects and parameters of production; in medicine - improving the quality of x-ray and tomographic images, detection of pathologies; in security systems - detection and tracking of potentially dangerous objects; environmentally - processing of multispectral images for the detection of environmental pollution; and many others.   In the framework of this direction the Department Aapis conducted research on the following topics: the construction and application of optimal spatial and frequency filters. application of methods of restoration and reconstruction of images; processing of color images; segmentation and recognition of objects in the image; compressing images.

    Last publications Publications

    2018 year
    • Litvin A.P., Cherevkov S.A., Dubavik A., Babaev A.A., Parfenov P.S., Simoes Gamboa A.L., Fedorov A.V., Baranov A.V.

      Thin Layer of Semiconductor Plasmonic Nanocrystals for the Enhancement of NIR Fluorophores // Journal of Physical Chemistry C - 2018

    • Якуненков Р.Е., Князев К.И., Фокина М.И., Зулина Н.А.

      Исследовние оптических свойств органического красителя в полимерной матрице в присутствии плазмонного резонанса//СБОРНИК НАУЧНЫХ ТРУДОВ - 2018. - Вып. VII. - № VII. - С. 70, 71

    • Litvin A.P., Babaev A.A., Dubavik A., Cherevkov S., Parfenov P.S., Ushakova E., Baranov M.A., Andreeva O.V., Purcell-Milton F., Gun’ko Y.K., Fedorov A.V., Baranov A.V.

      Strong Enhancement of PbS Quantum Dot NIR Emission Using Plasmonic Semiconductor Nanocrystals in Nanoporous Silicate Matrix // Advanced Optical Materials - 2018, Vol. 6, No. 6, pp. 1701055

    • Иванова Т.В., Анощенков Д.И.

      Анализ возможных распределений координат реальных лучей на входном зрачке оптической системы при аппроксимации волновой аберрации полиномами Цернике // Научно-технический вестник информационных технологий, механики и оптики - 2018. - Т. 18. - № 1(113). - С. 9-14

    • Ekimenkova A., Voznesenskaya A.

      Research and development of the method of composition of hybrid polymer optical systems//Proceedings of SPIE, IET - 2018

    • Bourauleuv A.D., Ilkiv I., Reznik R.R., Kotlyar K.P., Soshnikov I., Cirlin G.E., Brunkov P.N., Kirilenko D.A., Bondarenko L.V., Nepomniaschiy A., Gruznev D.V., Zotov A.V., Saranin A.A., Dhaka V., Lipsanen H.

      New method for MBE growth of GaAs nanowires on silicon using colloidal Au nanoparticles // Nanotechnology - 2018, Vol. 29, No. 4, pp. 045602

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