rus
Nanotechnology
A.I.Akhmetova, I.V.Yaminsky, I.Yu.Ilyina, Yu.D.Aleksandrov, V.E.Tikhomirova, E.V.Popova
AFM STUDY OF NANOPLATFORMS FOR THE BIOLOGICALLY ACTIVE COMPOUNDS DELIVERY TO PLANTS DOI: https://doi.org/10.22184/1993-8578.2023.16.5.248.255
In this work, nanoplatforms based on calcium phosphate (CaP), chitosan, and gold nanoparticles, as well as nanoemulsions based on nonionic surfactants, are studied for the delivery of biologically active compounds, including double-stranded RNA (dsRNA), into a plant cell. Using atomic force microscopy, the morphological characteristics of the carriers, the nature of the arrangement on graphite and mica substrates, and the geometric dimensions were evaluated to further assess their ability to form complexes with dsRNA. The project is aimed at searching for nanoplatforms of various chemical nature to create composites with biologically active RNA, which ensure the safety of molecules during exogenous application (plant spraying) and increase the efficiency of their delivery to plant leaves to protect plants from pathogens (viruses).
AFM STUDY OF NANOPLATFORMS FOR THE BIOLOGICALLY ACTIVE COMPOUNDS DELIVERY TO PLANTS DOI: https://doi.org/10.22184/1993-8578.2023.16.5.248.255
In this work, nanoplatforms based on calcium phosphate (CaP), chitosan, and gold nanoparticles, as well as nanoemulsions based on nonionic surfactants, are studied for the delivery of biologically active compounds, including double-stranded RNA (dsRNA), into a plant cell. Using atomic force microscopy, the morphological characteristics of the carriers, the nature of the arrangement on graphite and mica substrates, and the geometric dimensions were evaluated to further assess their ability to form complexes with dsRNA. The project is aimed at searching for nanoplatforms of various chemical nature to create composites with biologically active RNA, which ensure the safety of molecules during exogenous application (plant spraying) and increase the efficiency of their delivery to plant leaves to protect plants from pathogens (viruses).
A.I.Arefev, V.N.Gornov, L.E.Peshkicheva, O.S.Yurchenko, L.E.Guss, A.V.Savelyev, A.P.Kotov
FABRICATION OF LASER TARGETS BY VACUUM COATING DOI: https://doi.org/10.22184/1993-8578.2023.16.5.256.264
FABRICATION OF LASER TARGETS BY VACUUM COATING DOI: https://doi.org/10.22184/1993-8578.2023.16.5.256.264
D.I.Yaminsky, I.V.Yaminsky
NANOPOSITIONING SYSTEM FOR PHYSICAL EXPERIMENT DOI: https://doi.org/10.22184/1993-8578.2023.16.5.266.270
A two-stage nanopositioning system has been developed along three coordinates X, Y and Z with an accuracy of 0.1 nm. The nanopositioning system is intended for use in scanning probe microscopy, ultra-high resolution optical microscopy, and microlens microscopy. This paper considers an example of constructing a scanning capillary microscope based on the developed system of precision movements.
NANOPOSITIONING SYSTEM FOR PHYSICAL EXPERIMENT DOI: https://doi.org/10.22184/1993-8578.2023.16.5.266.270
A two-stage nanopositioning system has been developed along three coordinates X, Y and Z with an accuracy of 0.1 nm. The nanopositioning system is intended for use in scanning probe microscopy, ultra-high resolution optical microscopy, and microlens microscopy. This paper considers an example of constructing a scanning capillary microscope based on the developed system of precision movements.
Tags: nanocapillary nanodisplacements probe microscopy scanning capillary microscopy зондовая микроскопия нанокапилляр наноперемещения сканирующая капиллярная микроскопия
A.V.Fomin, E.M.Filonenko, E.A.Anashkin
FEATURES OF THE ION-BEAM DEPOSITION TECHNOLOGY OF MULTILAYER OPTICAL COATINGS FOR INJECTION LASERS CAVITIES https://doi.org/10.22184/1993-8578.2023.16.5.272.280
The work is devoted to developing the optical coatings technology for injection lasers cavities on an ion-beam deposition facility. The optical coatings design has been performed to meet the requirements for facets reflection coefficients, and dielectric layers deposition modes have been determined. Development of the deposition modes consisted of determining the optimal parameters of an ion beam, the flow ratio rates of the ion-source and reagent gases, and substrate temperature. Calculations of the spectral characteristics of high-reflection and anti-reflection coatings obtained based on the proposed designs and experimental values of dielectric layers' refractive indices indicate that required reflection coefficients for injection lasers cavities have been achieved.
FEATURES OF THE ION-BEAM DEPOSITION TECHNOLOGY OF MULTILAYER OPTICAL COATINGS FOR INJECTION LASERS CAVITIES https://doi.org/10.22184/1993-8578.2023.16.5.272.280
The work is devoted to developing the optical coatings technology for injection lasers cavities on an ion-beam deposition facility. The optical coatings design has been performed to meet the requirements for facets reflection coefficients, and dielectric layers deposition modes have been determined. Development of the deposition modes consisted of determining the optimal parameters of an ion beam, the flow ratio rates of the ion-source and reagent gases, and substrate temperature. Calculations of the spectral characteristics of high-reflection and anti-reflection coatings obtained based on the proposed designs and experimental values of dielectric layers' refractive indices indicate that required reflection coefficients for injection lasers cavities have been achieved.
Tags: injection lasers ion-beam deposition optical coatings refractive indices инжекционные лазеры ионно-лучевое нанесение коэффициенты преломления оптические покрытия
V.P.Mikhailov, A.A.Kopylov
PLATFORM FOR ACTIVE VIBRATION ISOLATION OF NANOTECHNOLOGICAL EQUIPMENT DOI: https://doi.org/10.22184/1993-8578.2023.16.5.282.287
The results of mathematical modeling of the active damper automatic control system based on a magnetorheodogical elastomer in the Simulink MATLAB environment are given. The results of experimental studies of the platform are presented and the transmission coefficients of the amplitude of vibration displacements in the low-frequency range are determined.
PLATFORM FOR ACTIVE VIBRATION ISOLATION OF NANOTECHNOLOGICAL EQUIPMENT DOI: https://doi.org/10.22184/1993-8578.2023.16.5.282.287
The results of mathematical modeling of the active damper automatic control system based on a magnetorheodogical elastomer in the Simulink MATLAB environment are given. The results of experimental studies of the platform are presented and the transmission coefficients of the amplitude of vibration displacements in the low-frequency range are determined.
Tags: active vibration isolation automatic control magnetorheological elastomers автоматическое регулирование активная виброизоляция магнитореологические эластомеры
A.V.Blinov, A.A.Blinova, Z.A.Rekhman, A.A.Gvozdenko, A.B.Golik, D.D.Filippov, A.G.Khramtsov , M.A.Kolodkin, T.N.Bakholdina
STUDY OF SELENIUM NANOPARTICLES REDUCTION PROCESS DOI: https://doi.org/10.22184/1993-8578.2023.16.5.288.296
This paper presents the results of study of selenium nanoparticles reduction process of using various reducing agents. Nanoparticles were obtained by chemical reduction in an aqueous medium, selenious acid was used as a precursor, and cocamidopropyl betaine was chosen as a stabilizer. The average hydrodynamic radius of the samples was studied by photon correlation spectroscopy, and the ζ potential was studied by acoustic and electroacoustic spectroscopy. It has been established that selenium nanoparticles obtained using ascorbic acid have an average hydrodynamic radius of 12.93 nm, with sodium borohydride – 23.16 nm, with timurea – 21.85 nm. Samples obtained using hydrazine, sodium thiosulfate, and L-cysteine coagulated for some time after synthesis, while with reducing agents such as urotropine, sodium citrate, glucose, and urea, selenium nanoparticles were not formed. The optimal ratios of the precursor and reducing agent were determined, and the dependences of the average hydrodynamic radius of the obtained samples were obtained. An analysis of the obtained results showed that the optimal reducing agent for obtaining selenium nanoparticles is ascorbic acid with a precursor to reducing agent ratio of 1:4 and an average hydrodynamic radius of 14 nm.
STUDY OF SELENIUM NANOPARTICLES REDUCTION PROCESS DOI: https://doi.org/10.22184/1993-8578.2023.16.5.288.296
This paper presents the results of study of selenium nanoparticles reduction process of using various reducing agents. Nanoparticles were obtained by chemical reduction in an aqueous medium, selenious acid was used as a precursor, and cocamidopropyl betaine was chosen as a stabilizer. The average hydrodynamic radius of the samples was studied by photon correlation spectroscopy, and the ζ potential was studied by acoustic and electroacoustic spectroscopy. It has been established that selenium nanoparticles obtained using ascorbic acid have an average hydrodynamic radius of 12.93 nm, with sodium borohydride – 23.16 nm, with timurea – 21.85 nm. Samples obtained using hydrazine, sodium thiosulfate, and L-cysteine coagulated for some time after synthesis, while with reducing agents such as urotropine, sodium citrate, glucose, and urea, selenium nanoparticles were not formed. The optimal ratios of the precursor and reducing agent were determined, and the dependences of the average hydrodynamic radius of the obtained samples were obtained. An analysis of the obtained results showed that the optimal reducing agent for obtaining selenium nanoparticles is ascorbic acid with a precursor to reducing agent ratio of 1:4 and an average hydrodynamic radius of 14 nm.
Tags: acoustic and electroacoustic spectroscopy reducing agent selenium nanoparticles акустическая и электроакустическая спектроскопия восстановитель наночастицы селена
Equipment for nanoindustry
V.V.Odinokov, M.G.Biryukov
STUDY OF EFFICIENCY OF VACUUM EQUIPMENT WITH ELECTRON BEAM EVAPORATORS DOI: https://doi.org/10.22184/1993-8578.2023.16.5.306.309
STUDY OF EFFICIENCY OF VACUUM EQUIPMENT WITH ELECTRON BEAM EVAPORATORS DOI: https://doi.org/10.22184/1993-8578.2023.16.5.306.309
B.G.Turukhano, N.Turukhano, S.N.Khanov, V.V.Dobyrn, Yu.M.Lavrov, O.G.Ermolenko
NANOHOLOGRAPHIC LENGTH METERS AND LINEAR ENCODERS DOI: https://doi.org/10.22184/1993-8578.2023.16.5.310.318
In this paper, the authors highlight the current state of measurement technology when measuring the linear dimensions of objects with nano-horizontal holographic encoders (LHE) and vertical nano-holographic length encoders (VEH) based on linear holographic diffraction gratings (LHDG).
NANOHOLOGRAPHIC LENGTH METERS AND LINEAR ENCODERS DOI: https://doi.org/10.22184/1993-8578.2023.16.5.310.318
In this paper, the authors highlight the current state of measurement technology when measuring the linear dimensions of objects with nano-horizontal holographic encoders (LHE) and vertical nano-holographic length encoders (VEH) based on linear holographic diffraction gratings (LHDG).
Tags: horizontal nano-holographic encoders linear holographic diffraction grating vertical nano-holographic length encoders вертикальный нанодлиномер голографический горизонтальный нано голографический датчик линейная голографическая дифракционная решетка
Nanomaterials
А.А.Glushko, М.R.Gusev, V.V.Makarchuk
RESEARCH OF THE DEPENDENCE OF THE COLLECTED CHARGE IN A MOS TRANSISTOR ON LINEAR ENERGY TRANSFER OF HEAVY IONS DOI: https://doi.org/10.22184/1993-8578.2023.16.5.298.305
A technological simulation of a MOS transistor exposed to a heavy ion has been carried out. A hypothesis about linear dependence of the collected charge in the device on the magnitude of linear energy transfer of a particle hitting it is proposed and tested. The most sensitive to radiation exposure areas of the considered transistor are determined.
RESEARCH OF THE DEPENDENCE OF THE COLLECTED CHARGE IN A MOS TRANSISTOR ON LINEAR ENERGY TRANSFER OF HEAVY IONS DOI: https://doi.org/10.22184/1993-8578.2023.16.5.298.305
A technological simulation of a MOS transistor exposed to a heavy ion has been carried out. A hypothesis about linear dependence of the collected charge in the device on the magnitude of linear energy transfer of a particle hitting it is proposed and tested. The most sensitive to radiation exposure areas of the considered transistor are determined.