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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kozak V. V., Fedorova N. A., Olshevskaya Ju. S., Kovaleva A. V., Shubin A. A., Tarasov A. S., Varnakov S. N., Ovchinnikov S. G., Tomilin F. N., Avramov P. V.
Заглавие : Nearly flat bands and ferromagnetism in the terminated Mn2C MXene
Место публикации : Comput. Condens. Matter. - 2023. - Vol. 35. - Ст.e00806. - ISSN 23522143 (eISSN), DOI 10.1016/j.cocom.2023.e00806
Примечания : Cited References: 76. - This study was supported by the Russian Science Foundation, project no. 21-12-00226 and the JCSS Joint Super Computer Center of the Russian Academy of Sciences. P.V.A. acknowledges the National Research Foundation of the Republic of Korea grant NRF 2021R1A2C1010455
Аннотация: Using Density Functional Theory and Periodic Boundary Conditions it is shown that the hydroxylated/oxygenated/halogenated Mn2C monolayer is a 2D ferromagnetic material with a local Mn ions magnetic moment of 2.7μв per unit cell. Upon oxygenation the ferromagnetic coupling between Mn ions can be transformed into a superposition of magnetic states. In particular, the intrinsic magnetic moments in the hydroxylated/halogenated Mn2C monolayer can attain up to 6μB per unit cell. It is found that oxygen termination induces flat bands in the band structure, which evidence for the strong electron correlations and could lead to the implementation of exotic quantum phases in 2D crystals and high-temperature superconductivity. Along with the potential of the hydroxylated Mn2C monolayer characterized by the half-metallicity for application in spintronic devices as a perfect spin injector/detector, this material like other conventional MXenes is promising for the use in energy storage, electromagnetic interference shielding, and sensing.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Huang, Cheng-Han, Wu, Chia-Hung, Bikbaev R. G., Ye, Ming-Jyun, Chen, Chi-Wen, Wang, Tung-Jung, Timofeev I. V., Lee, Wei, Chen, Kuo-Ping
Заглавие : Wavelength- and angle-selective photodetectors enabled by graphene hot electrons with Tamm plasmon polaritons
Место публикации : Nanomaterials. - 2023. - Vol. 13, Is. 4. - Ст.693. - ISSN 20794991 (eISSN), DOI 10.3390/nano13040693
Примечания : Cited References: 50. - This work is supported by the Higher Education Sprout Project of the National Yang Ming Chiao Tung University, National Tsing Hua University, Ministry of Education and the National Science and Technology Council (NSTC 110-2221-E-007-130-MY3; 109-2628-E-007-003-MY3; 111-2923-E-007-008-MY3; 111-2628-E-007-021; 111-2119-M-A49-006). This research was funded by the Russian Science Foundation (project no. 22-42-08003)
Аннотация: Recently, two-dimensional materials have attracted attention owing to their special optical characteristics and miniaturization, with low thickness as well as extremely high responsivity. Additionally, Tamm plasmon polariton (TPP) resonance can be observed by combining a metal film and a one-dimensional (1D) photonic crystal (PC), where an electric field confinement is located at the metal–1D PC interface. In this study, a graphene layer combined with a TPP is proposed as a wavelength- and angle-selective photodetector. The graphene layer is located where the strong field confinement occurs, and the photocurrent response is significantly enhanced with increasing absorption by over four times (from 62.5 μA⋅W−1 to 271 μA⋅W−1 and undetected state to 330 μA⋅W−1 in two different samples). Moreover, the graphene–TPP photodetector has wavelength and angle selectivity, which can be applied in LiDAR detecting, sun sensors, laser beacon tracking, and navigational instruments in the future.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Sukhanova, Ekaterina V., Sagatov, Nursultan E., Oreshonkov A. S., Gavryushkin, Pavel N., Popov, Zakhar I.
Заглавие : Halogen-doped Chevrel phase Janus monolayers for photocatalytic water splitting
Место публикации : Nanomaterials. - 2023. - Vol. 13, Is. 2. - Ст.368. - ISSN 20794991 (eISSN), DOI 10.3390/nano13020368
Примечания : Cited References: 85. - The authors acknowledge financial support from the Russian Science Foundation (no. 21-73-20183)
Аннотация: Chevrel non-van der Waals crystals are promising candidates for the fabrication of novel 2D materials due to their versatile crystal structure formed by covalently bonded (Mo6X8) clusters (X–chalcogen atom). Here, we present a comprehensive theoretical study of the stability and properties of Mo-based Janus 2D structures with Chevrel structures consisting of chalcogen and halogen atoms via density functional theory calculations. Based on the analysis performed, we determined that the S2Mo3I2 monolayer is the most promising structure for overall photocatalytic water-splitting application due to its appropriate band alignment and its ability to absorb visible light. The modulated Raman spectra for the representative structures can serve as a blueprint for future experimental verification of the proposed structures.
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Вид документа : Однотомное издание
Шифр издания :
Автор(ы) : Edelman I. S., Ovchinnikov S. G., Thakur A., Thakur P.
Заглавие : Impact of nano-biomaterials on the world
Колич.характеристики :34 pp.
Место публикации : Integrated nanomaterials and their applications/ ed.: D. Suhag [et al.]: Springer, 2023. - Chapt. 22. - P.1-34
Примечания : Cited References: 77
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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Sokolov A. Е., Lukyanenko A. V., Moryachkov R. V., Zabluda V. N., Borus A. A., Zamay T., Luzan N. A., Galeev R. G., Masyugin A. N., Zelenov F. V., Zamay S. S.
Заглавие : Biofunctionaized magnetic nanodiscs applied in medicine
Коллективы : "Magnetic nanomaterials in biomedicine: synthesis and functionalization", International conference
Место публикации : 1st International Conference APRICOT 2023: book of abstracts. - 2023. - P.47-48
Примечания : Cited References: 4. - Красноярский рег. фонд науки, № 2022060108781
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Chibisov, Andrey N., Chibisova, Mary A., Prokhorenko, Anastasiia V., Obrazcov, Kirill V., Fedorov A. S., Yu, Yang-Xin
Заглавие : Possibilities of controlling the quantum states of hole qubits in an ultrathin germanium layer using a magnetic substrate: Results from ab initio calculations
Колич.характеристики :8 с
Место публикации : Nanomaterials. - 2023. - Vol. 13, Is. 23. - Ст.3070. - ISSN 20794991 (eISSN), DOI 10.3390/nano13233070
Примечания : Cited References: 36. - This work was supported by the Russian Science Foundation of the Russian Federation (project No. 22-23-01186). The authors would like to thank them for providing access to the HPC cluster at the Center for Shared Use of Scientific Equipment and the Center for Processing and Storage of Scientific Data of the Far Eastern Branch of the Russian Academy of Sciences and the Joint Supercomputer Center of the Russian Academy of Sciences (JSCC RAS)
Аннотация: Using density functional theory in the noncollinear approximation, the behavior of quantum states of hole qubits in a Ge/Co:ZnO system was studied in this work. A detailed analysis of the electronic structure and the distribution of total charge density and hole states was carried out. It was shown that in the presence of holes, the energetically more favorable quantum state is the state |0˃, in contrast to the state |1˃ when there is no hole in the system. The favorability of hole states was found to be dependent on the polarity of the applied electric field.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zharkov S. M., Yumashev V. V., Moiseenko E. T., Altunin R. R., Solovyov L. A., Volochaev M. N., Zeer G. M., Nikolaeva N. S., Belousov O. V.
Заглавие : Thermokinetic study of aluminum-induced crystallization of a-Si: The effect of Al layer thickness
Колич.характеристики :24 с
Место публикации : Nanomaterials. - 2023. - Vol. 13, Is. 22. - Ст.2925. - ISSN 20794991 (eISSN), DOI 10.3390/nano13222925
Примечания : Cited References: 70. - This work was supported by the Russian Science Foundation under grant #22-13-00313
Аннотация: The effect of the aluminum layer on the kinetics and mechanism of aluminum-induced crystallization (AIC) of amorphous silicon (a-Si) in (Al/a-Si)n multilayered films was studied using a complex of in situ methods (simultaneous thermal analysis, transmission electron microscopy, electron diffraction, and four-point probe resistance measurement) and ex situ methods (X-ray diffraction and optical microscopy). An increase in the thickness of the aluminum layer from 10 to 80 nm was found to result in a decrease in the value of the apparent activation energy Ea of silicon crystallization from 137 to 117 kJ/mol (as estimated by the Kissinger method) as well as an increase in the crystallization heat from 12.3 to 16.0 kJ/(mol Si). The detailed kinetic analysis showed that the change in the thickness of an individual Al layer could lead to a qualitative change in the mechanism of aluminum-induced silicon crystallization: with the thickness of Al ≤ 20 nm. The process followed two parallel routes described by the n-th order reaction equation with autocatalysis (Cn-X) and the Avrami–Erofeev equation (An): with an increase in the thickness of Al ≥ 40 nm, the process occurred in two consecutive steps. The first one can be described by the n-th order reaction equation with autocatalysis (Cn-X), and the second one can be described by the n-th order reaction equation (Fn). The change in the mechanism of amorphous silicon crystallization was assumed to be due to the influence of the degree of Al defects at the initial state on the kinetics of the crystallization process.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Lin, Chun-Rong, Ivanova O. S., Edelman I. S., Knyazev Yu. V., Zharkov S. M., Petrov D. A., Sokolov A. Е., Svetlitsky E. S., Velikanov D. A., Solovyov, Leonid A., Chen, Ying-Zhen, Tseng, Yaw-Teng
Заглавие : Carbon double coated Fe3O4@C@C nanoparticles: Morphology features, magnetic properties, dye adsorption
Коллективы : Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [19-52-52002]; Ministry of Science and Technology of TaiwanMinistry of Science and Technology, Taiwan [108-2923-M-153-001-MY3, 109-2112-M-153-003]; Joint Scientific Center of the Siberian Federal University [FSRZ-2020-0011]; Ministry of Science and Higher Education of the Russian Federation
Место публикации : Nanomaterials. - 2022. - Vol. 12, Is. 3. - Ст.376. - ISSN 2079-4991(eISSN), DOI 10.3390/nano12030376
Примечания : Cited References: 44. - The work was supported financially by the Russian Foundation for Basic Research, Grant No. 19-52-52002 and Ministry of Science and Technology of Taiwan, Grants MOST No. 108-2923-M-153-001-MY3 and No. 109-2112-M-153-003-. The support was obtained also from the Joint Scientific Center of the Siberian Federal University supported by the State assignment (#FSRZ-2020-0011) of the Ministry of Science and Higher Education of the Russian Federation, where the Transmission Electron Microscopy studies were carried out
Предметные рубрики: SOLID-PHASE EXTRACTION
FE3O4 NANOPARTICLES
PROFILE REFINEMENT
Аннотация: This work is devoted to the study of magnetic Fe3O4 nanoparticles doubly coated with carbon. First, Fe3O4@C nanoparticles were synthesized by thermal decomposition. Then these synthesized nanoparticles, 20–30 nm in size were processed in a solution of glucose at 200 °C during 12 h, which led to an unexpected phenomenon – the nanoparticles self-assembled into large conglomerates of a regular shape of about 300 nm in size. The morphology and features of the magnetic properties of the obtained hybrid nanoparticles were characterized by transmission electron microscopy, differential thermo-gravimetric analysis, vibrating sample magnetometer, magnetic circular dichroism and Mössbauer spectroscopy. It was shown that the magnetic core of Fe3O4@C nanoparticles was nano-crystalline, corresponding to the Fe3O4 phase. The Fe3O4@C@C nanoparticles presumably contain Fe3O4 phase (80%) with admixture of maghemite (20%), the thickness of the carbon shell in the first case was of about 2–4 nm. The formation of very large nanoparticle conglomerates with a linear size up to 300 nm and of the same regular shape is a remarkable peculiarity of the Fe3O4@C@C nanoparticles. Adsorption of organic dyes from water by the studied nanoparticles was also studied. The best candidates for the removal of dyes were Fe3O4@C@C nanoparticles. The kinetic data showed that the adsorption processes were associated with the pseudo-second order mechanism for cationic dye methylene blue (MB) and anionic dye Congo red (CR). The equilibrium data were more consistent with the Langmuir isotherm and were perfectly described by the Langmuir–Freundlich model.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Cazacu, Nicoleta, Chilom, Claudia G., Iftimie, Sorina, Balasoiu, Maria, Ladygina, Valentina P., Stolyar S. V., Orelovich, Oleg L., Kovalev, Yuriy S., Rogachev, Andrey V.
Заглавие : Biogenic ferrihydrite nanoparticles produced by Klebsiella oxytoca: Characterization, physicochemical properties and bovine serum albumin interactions
Место публикации : Nanomaterials. - 2022. - Vol. 12, Is. 2. - Ст.249. - ISSN 2079-4991(eISSN), DOI 10.3390/nano12020249
Примечания : Cited References: 59. - This research was funded by JINR Themes 02-1-1107-2011/2021, 04-5-1131-2017/2021 and 04-4-1133-2018/2023 and with the financial support of the RO-JINR Projects Nos. 366/11.05.2021 (items 7, 86, 97) and 365/11.05.2021 (items 8, 87 and 98). This work also benefited from the use of the SasView application, originally developed under NSF Award DMR-0520547. SasView also contains the code developed with funding from the EU Horizon 2020 program under the SINE2020 project Grant No 654000. The APC was funded by JINR Theme 02-1-1107-2011/2021, Project No. 366/11.05.2021, item 7. This study used the infrastructure of the Applied Genetics Resource Facility of MIPT (Suport Grant 075-15-2021-684)
Предметные рубрики: MAGNETIC-PROPERTIES
REDUCTION
MOSSBAUER
FERRITIN
DOCKING
BINDING
Аннотация: The synthesis of nanoparticles inside microorganisms is an economical alternative to chemical and physical methods of nanoparticle synthesis. In this study, ferrihydrite nanoparticles synthesized by Klebsiella oxytoca bacterium in special conditions were characterized by scanning electron microscopy (SEM), energy-dispersive X-ray analysis (EDS), small-angle X-ray (SAXS), UV-Vis spectroscopy, fluorescence, fluorescence resonance energy transfer (FRET), and molecular docking. The morphology and the structure of the particles were characterized by means of SEM and SAXS. The elemental content was determined by means of the EDS method. The absorption properties of the ferrihydrite nanoparticles were investigated by UV-Vis spectroscopy. The binding mechanism of the biogenic ferrihydrite nanoparticles to Bovine Serum Albumin (BSA) protein, studied by fluorescence, showed a static and weak process, combined with FRET. Protein denaturation by temperature and urea in the presence of the ferrihydrite nanoparticles demonstrated their influence on the unfolding process. The AutoDock Vina and UCSF Chimera programs were used to predict the optimal binding site of the ferrihydrite to BSA and to find the location of the hydrophobic cavities in the sub-domain IIA of the BSA structure.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Rudakova N. V., Bikbaev R. G., Pankin P. S., Vetrov S. Ya., Timofeev I. V., Chen, Kuo-Ping, Lee, Wei
Заглавие : Metal-dielectric polarization-preserving anisotropic mirror for chiral optical Tamm state
Коллективы : RFBRRussian Foundation for Basic Research (RFBR); MOST [19-52-52006]; Higher Education Sprout Project of the National Yang Ming Chiao Tung University; Ministry of Science and Technology (MOST)Ministry of Science and Technology, China [108-2923-E-009-003-MY3]
Место публикации : Nanomaterials. - 2022. - Vol. 12, Is. 2. - Ст.234. - ISSN 2079-4991(eISSN), DOI 10.3390/nano12020234
Примечания : Cited References: 46. - The reported study was funded by RFBR and MOST according to the research project No. 19-52-52006. This work was also supported by the Higher Education Sprout Project of the National Yang Ming Chiao Tung University and Ministry of Education and the Ministry of Science and Technology (MOST) No. 108-2923-E-009-003-MY3
Предметные рубрики: PLASMON
MODES
PHASE
ABSORPTION
RESONANCE
Аннотация: This numerical study demonstrates the possibility of exciting a chiral optical Tamm state localized at the interface between a cholesteric liquid crystal and a polarization-preserving anisotropic mirror conjugated to a metasurface. The difference of the proposed structure from a fully dielectric one is that the metasurface makes it possible to decrease the number of layers of a polarization-preserving anisotropic mirror by a factor of more than two at the retained Q-factor of the localized state. It is shown that the proposed structure can be used in a vertically emitting laser.
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