Pub Date : 2022-12-28DOI: 10.17586/2220-8054-2022-13-6-698-708
A. Luginina, S. Kuznetsov, A. Alexandrov, R. Gainutdinov, D. I. Petukhov, V. Voronov, E. Chernova, P. Fedorov
{"title":"High lignin content cellulose nanofibrils obtained from thermomechanical pulp","authors":"A. Luginina, S. Kuznetsov, A. Alexandrov, R. Gainutdinov, D. I. Petukhov, V. Voronov, E. Chernova, P. Fedorov","doi":"10.17586/2220-8054-2022-13-6-698-708","DOIUrl":"https://doi.org/10.17586/2220-8054-2022-13-6-698-708","url":null,"abstract":"","PeriodicalId":18782,"journal":{"name":"Nanosystems: Physics, Chemistry, Mathematics","volume":"70 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85287712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-28DOI: 10.17586/2220-8054-2022-13-6-668-677
V. M. Talanov, M. Talanov
A BSTRACT A structural mechanism for the formation of nanoclusters and the rhombohedral modification of CuZr 1 . 86(1) S 4 has been proposed. Group-theoretical and crystal-chemical methods are used to study the features of the crystal structure and multi-order in Cu–Zr-thiospinel. A multi-order is a structural organization of a material, in the formation of which different degrees of freedom of a crystal participate. It has been proven that the rhombohedral structure of CuZr 1 . 86(1) S 4 is formed as a result of displacements and orderings of all types of atoms. It is theoretically shown that the formation of a rhombohedral phase is associated not only with the lattice, but also with the charge and, possibly, orbital degrees of freedom of the crystal. Theory predicts that the rhombohedral phase must be an improper ferroelastic. An important feature of the rhombohedral structure is metal nanoclusters: “bunch” of dimers, trimers, and tetrahedra. Bunch of dimers are an unusual type of self-organization of atoms in rhombohedral spinel-like structures, formed by atoms of two (tetrahedral and octahedral) frustrated crystal sublattices.
cuzr1纳米团簇形成的结构机理及菱面体修饰。86(1) S 4已被提议。采用群论和晶体化学方法研究了cu - zr -硫尖晶石晶体结构和多序性的特点。多阶是一种材料的结构组织，它的形成有不同自由度的晶体参与。证明了cuzr1的菱面体结构。s4是由所有类型的原子的位移和排列形成的。理论表明，菱形相的形成不仅与晶格有关，而且与晶体的电荷和可能的轨道自由度有关。理论预测，菱形相一定是一种反常的铁弹性相。菱形体结构的一个重要特征是金属纳米簇:二聚体、三聚体和四面体的“束”。束状二聚体是由两个(四面体和八面体)受挫晶体亚晶格的原子在菱形尖晶石状结构中形成的一种不寻常的自组织原子。
{"title":"Multi-order and structural mechanism of atom nanocluster formation in rhombohedral Cu-Zr-thiospinels","authors":"V. M. Talanov, M. Talanov","doi":"10.17586/2220-8054-2022-13-6-668-677","DOIUrl":"https://doi.org/10.17586/2220-8054-2022-13-6-668-677","url":null,"abstract":"A BSTRACT A structural mechanism for the formation of nanoclusters and the rhombohedral modification of CuZr 1 . 86(1) S 4 has been proposed. Group-theoretical and crystal-chemical methods are used to study the features of the crystal structure and multi-order in Cu–Zr-thiospinel. A multi-order is a structural organization of a material, in the formation of which different degrees of freedom of a crystal participate. It has been proven that the rhombohedral structure of CuZr 1 . 86(1) S 4 is formed as a result of displacements and orderings of all types of atoms. It is theoretically shown that the formation of a rhombohedral phase is associated not only with the lattice, but also with the charge and, possibly, orbital degrees of freedom of the crystal. Theory predicts that the rhombohedral phase must be an improper ferroelastic. An important feature of the rhombohedral structure is metal nanoclusters: “bunch” of dimers, trimers, and tetrahedra. Bunch of dimers are an unusual type of self-organization of atoms in rhombohedral spinel-like structures, formed by atoms of two (tetrahedral and octahedral) frustrated crystal sublattices.","PeriodicalId":18782,"journal":{"name":"Nanosystems: Physics, Chemistry, Mathematics","volume":"23 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84976218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-28DOI: 10.17586/2220-8054-2022-13-6-628-631
A. Vatutin, G. Miroshnichenko, A. Trifanov
BSTRACT We study the master equation for open quantum systems in the alternative form, preserving the normal form of the averaged normal-ordered operators. We give an example of using this equation for the correlators of normal-ordered field mode operators. We explore the properties of the system of linear equations for the higher-order field operators based on the example of a two-mode bosonic system
{"title":"Master equation for correlators of normal-ordered field mode operators","authors":"A. Vatutin, G. Miroshnichenko, A. Trifanov","doi":"10.17586/2220-8054-2022-13-6-628-631","DOIUrl":"https://doi.org/10.17586/2220-8054-2022-13-6-628-631","url":null,"abstract":"BSTRACT We study the master equation for open quantum systems in the alternative form, preserving the normal form of the averaged normal-ordered operators. We give an example of using this equation for the correlators of normal-ordered field mode operators. We explore the properties of the system of linear equations for the higher-order field operators based on the example of a two-mode bosonic system","PeriodicalId":18782,"journal":{"name":"Nanosystems: Physics, Chemistry, Mathematics","volume":"41 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86520943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-28DOI: 10.17586/2220-8054-2022-13-6-615-620
G. Miroshnichenko, A.N. Arzhanenkova, M. Plotnikov
A BSTRACT Subject of investigation. In this paper, we analyzed in detail the thermal mode of the operation of a vertical-cavity surface-emitting laser (VCSEL) used in the experiment. Method. As a part of the work, we carried out a theoretical study of the recurrence relation describing the change in the VCSEL wavelength under the action of specially selected modulation current pulses. The high speed of the device working is determined by the optical demodulation scheme, which is based on using a phase-modulated carrier (the demodulation method used is arctangent demodulation: Phase Generated Carrier (PGC-ATAN)). Main results. Formulas were obtained that determine the frequency, phase, and modulation depth which leads to calculation of the principle of change in the modulated VCSEL wavelength at sampling points. Comparison with experimental data showed that the obtained formulas allow one to choose the optimal thermal mode of VCSEL operation and reliably calculate the characteristics of the modulation process in terms of the carrier phase. Practical significance. The obtained formulas make it possible to calculate the exact characteristics of the modulation process, and the precisely calculated phase of the modulation source. As a result, one can compensate it more effectively when demodulating phase of the interferometer.
{"title":"Investigation of the method of current thermal modulation of the wavelength VCSEL","authors":"G. Miroshnichenko, A.N. Arzhanenkova, M. Plotnikov","doi":"10.17586/2220-8054-2022-13-6-615-620","DOIUrl":"https://doi.org/10.17586/2220-8054-2022-13-6-615-620","url":null,"abstract":"A BSTRACT Subject of investigation. In this paper, we analyzed in detail the thermal mode of the operation of a vertical-cavity surface-emitting laser (VCSEL) used in the experiment. Method. As a part of the work, we carried out a theoretical study of the recurrence relation describing the change in the VCSEL wavelength under the action of specially selected modulation current pulses. The high speed of the device working is determined by the optical demodulation scheme, which is based on using a phase-modulated carrier (the demodulation method used is arctangent demodulation: Phase Generated Carrier (PGC-ATAN)). Main results. Formulas were obtained that determine the frequency, phase, and modulation depth which leads to calculation of the principle of change in the modulated VCSEL wavelength at sampling points. Comparison with experimental data showed that the obtained formulas allow one to choose the optimal thermal mode of VCSEL operation and reliably calculate the characteristics of the modulation process in terms of the carrier phase. Practical significance. The obtained formulas make it possible to calculate the exact characteristics of the modulation process, and the precisely calculated phase of the modulation source. As a result, one can compensate it more effectively when demodulating phase of the interferometer.","PeriodicalId":18782,"journal":{"name":"Nanosystems: Physics, Chemistry, Mathematics","volume":"112 ","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72431056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-28DOI: 10.17586/2220-8054-2022-13-6-655-661
D. D. Averkiev, L. Larina, O. Shevaleevskiy, O. V. Almjasheva
A BSTRACT Nanocrystalline particles on the basis of La 2 (Ni,Mn,Fe) 2 O 6 variable composition phases of a double perovskite structure have been produced by glycine-nitrate combustion. The size of crystallites grows from 5 to 45 nm with an increase in iron content of synthesized particles. It is demonstrated that iron unevenly builds into octahedral sites of nickel and manganese ions substituting mainly manganese ions. At the same time, the dependence of double perovskite unit cell volume on the iron ions concentration is well described by Retgers’ law.
{"title":"Formation of nanocrystalline particles on the basis of La2(Ni,Mn,Fe)2O6 variable composition phases having a structure of double perovskite under conditions of solution combustion","authors":"D. D. Averkiev, L. Larina, O. Shevaleevskiy, O. V. Almjasheva","doi":"10.17586/2220-8054-2022-13-6-655-661","DOIUrl":"https://doi.org/10.17586/2220-8054-2022-13-6-655-661","url":null,"abstract":"A BSTRACT Nanocrystalline particles on the basis of La 2 (Ni,Mn,Fe) 2 O 6 variable composition phases of a double perovskite structure have been produced by glycine-nitrate combustion. The size of crystallites grows from 5 to 45 nm with an increase in iron content of synthesized particles. It is demonstrated that iron unevenly builds into octahedral sites of nickel and manganese ions substituting mainly manganese ions. At the same time, the dependence of double perovskite unit cell volume on the iron ions concentration is well described by Retgers’ law.","PeriodicalId":18782,"journal":{"name":"Nanosystems: Physics, Chemistry, Mathematics","volume":"138 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78038866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-28DOI: 10.17586/2220-8054-2022-13-6-649-654
A. Seroglazova, V. Popkov
{"title":"Synthesis of highly active and visible-light-driven PrFeO3 photocatalyst using solution combustion approach and succinic acid as fuel","authors":"A. Seroglazova, V. Popkov","doi":"10.17586/2220-8054-2022-13-6-649-654","DOIUrl":"https://doi.org/10.17586/2220-8054-2022-13-6-649-654","url":null,"abstract":"","PeriodicalId":18782,"journal":{"name":"Nanosystems: Physics, Chemistry, Mathematics","volume":"56 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74098945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-28DOI: 10.17586/2220-8054-2022-13-6-621-627
M. Semenov, V. Krevchik, D. Filatov, D. Antonov, A. V. Shorokhov, A. Shkurinov, I. A. Ozheredov, P. V. Krevchik, A. Razumov, A. S. Kotov, I. Antonov, I. Semenov
A BSTRACT In this work, we have experimentally investigated the features of tunneling current-voltage (I–V) curves in the case of 1D-dissipative tunneling in the limit of weak dissipation for various both synthesized (and in the process of synthesis) metallic nanoparticles (NPs) (Ni, Co, Fe) in a combined atomic force mi-croscope/scanning tunneling microscope (AFM/STM) system in an external electric field. It is shown that for individual tunneling I–V curves, a single peak is observed at one of the polarities. In the process of synthesizing metallic nanoparticles with a change in polarity, instead of nanoclusters, it is possible to synthesize toroidal structures (shown by the example of “growing” Ni-NPs). The investigated effects of 1D-dissipative tunneling made it possible to develop the author’s method of controlled growth of quantum dots in a combined AFM/STM system. A qualitative agreement was obtained between the experimental and theoretical results, which allows us to assume the possibility of experimental observation of the macroscopic dissipative tunneling effects and thereby confirm the hypothesis expressed in the pioneering works of A. J. Leggett, A. I. Larkin, Yu. N. Ovchinnikov and other authors.
摘要:本文在原子力显微镜/扫描隧道显微镜(AFM/STM)组合系统中，实验研究了在弱耗散极限下，在一维耗散隧道情况下，各种金属纳米粒子(Ni, Co, Fe) (Ni, Co, Fe)的隧道电流-电压(I-V)曲线特征。结果表明，对于单个隧穿I-V曲线，在其中一个极性处观察到一个单峰。在合成极性变化的金属纳米颗粒的过程中，可以合成环形结构，而不是纳米簇(以“生长”Ni-NPs为例)。对一维耗散隧道效应的研究使作者提出的在AFM/STM组合系统中控制量子点生长的方法成为可能。实验结果与理论结果在定性上是一致的，这使得我们可以假设实验观察到宏观耗散隧穿效应的可能性，从而证实了A. J. Leggett, A. I. Larkin, Yu的开创性作品中提出的假设。N. Ovchinnikov和其他作者。
{"title":"Features of tunneling current-voltage characteristics in dielectric films with Ni, Fe and Co nanoparticles, investigated by conductive AFM and within the framework of the theory of 1D-dissipative tunneling","authors":"M. Semenov, V. Krevchik, D. Filatov, D. Antonov, A. V. Shorokhov, A. Shkurinov, I. A. Ozheredov, P. V. Krevchik, A. Razumov, A. S. Kotov, I. Antonov, I. Semenov","doi":"10.17586/2220-8054-2022-13-6-621-627","DOIUrl":"https://doi.org/10.17586/2220-8054-2022-13-6-621-627","url":null,"abstract":"A BSTRACT In this work, we have experimentally investigated the features of tunneling current-voltage (I–V) curves in the case of 1D-dissipative tunneling in the limit of weak dissipation for various both synthesized (and in the process of synthesis) metallic nanoparticles (NPs) (Ni, Co, Fe) in a combined atomic force mi-croscope/scanning tunneling microscope (AFM/STM) system in an external electric field. It is shown that for individual tunneling I–V curves, a single peak is observed at one of the polarities. In the process of synthesizing metallic nanoparticles with a change in polarity, instead of nanoclusters, it is possible to synthesize toroidal structures (shown by the example of “growing” Ni-NPs). The investigated effects of 1D-dissipative tunneling made it possible to develop the author’s method of controlled growth of quantum dots in a combined AFM/STM system. A qualitative agreement was obtained between the experimental and theoretical results, which allows us to assume the possibility of experimental observation of the macroscopic dissipative tunneling effects and thereby confirm the hypothesis expressed in the pioneering works of A. J. Leggett, A. I. Larkin, Yu. N. Ovchinnikov and other authors.","PeriodicalId":18782,"journal":{"name":"Nanosystems: Physics, Chemistry, Mathematics","volume":"7 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79927043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-31DOI: 10.17586/2220-8054-2022-13-5-565-573
N.K. Thach, I. Krechetov, V. V. Berestov, T.L. Lepkova, S. Stakhanova
{"title":"Optimizing the carbonization temperature in the fabrication of waste cotton based activated carbon used as electrode material for supercapacitor","authors":"N.K. Thach, I. Krechetov, V. V. Berestov, T.L. Lepkova, S. Stakhanova","doi":"10.17586/2220-8054-2022-13-5-565-573","DOIUrl":"https://doi.org/10.17586/2220-8054-2022-13-5-565-573","url":null,"abstract":"","PeriodicalId":18782,"journal":{"name":"Nanosystems: Physics, Chemistry, Mathematics","volume":"6 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88234712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-10-31DOI: 10.17586/2220-8054-2022-13-5-574-577
Vilas Khairnar
{"title":"Growth of carbon nanotubes on a finely dispersed nickel metal and study its electrochemical application","authors":"Vilas Khairnar","doi":"10.17586/2220-8054-2022-13-5-574-577","DOIUrl":"https://doi.org/10.17586/2220-8054-2022-13-5-574-577","url":null,"abstract":"","PeriodicalId":18782,"journal":{"name":"Nanosystems: Physics, Chemistry, Mathematics","volume":"82 1","pages":""},"PeriodicalIF":0.9,"publicationDate":"2022-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84362358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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