Nanosystems: Physics, Chemistry, Mathematics最新文献_第10页

High lignin content cellulose nanofibrils obtained from thermomechanical pulp 热机械纸浆制备高木质素含量纤维素纳米原纤维

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Nanosystems: Physics, Chemistry, Mathematics Pub Date : 2022-12-28 DOI: 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

引用次数: 0

Multi-order and structural mechanism of atom nanocluster formation in rhombohedral Cu-Zr-thiospinels 菱面体cu - zr -硫尖晶石原子纳米簇形成的多阶结构机制

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Nanosystems: Physics, Chemistry, Mathematics Pub Date : 2022-12-28 DOI: 10.17586/2220-8054-2022-13-6-668-677

V. M. Talanov, M. Talanov

{"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}

引用次数: 0

Master equation for correlators of normal-ordered field mode operators 正序场模算子相关器的主方程

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Nanosystems: Physics, Chemistry, Mathematics Pub Date : 2022-12-28 DOI: 10.17586/2220-8054-2022-13-6-628-631

A. Vatutin, G. Miroshnichenko, A. Trifanov

引用次数: 0

Investigation of the method of current thermal modulation of the wavelength VCSEL 波长VCSEL电流热调制方法的研究

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Nanosystems: Physics, Chemistry, Mathematics Pub Date : 2022-12-28 DOI: 10.17586/2220-8054-2022-13-6-615-620

G. Miroshnichenko, A.N. Arzhanenkova, M. Plotnikov

{"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}

引用次数: 0

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 以具有双钙钛矿结构的La2(Ni,Mn,Fe)2O6变组成相为基础，在溶液燃烧条件下形成纳米晶颗粒

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Nanosystems: Physics, Chemistry, Mathematics Pub Date : 2022-12-28 DOI: 10.17586/2220-8054-2022-13-6-655-661

D. D. Averkiev, L. Larina, O. Shevaleevskiy, O. V. Almjasheva

引用次数: 0

Synthesis of highly active and visible-light-driven PrFeO3 photocatalyst using solution combustion approach and succinic acid as fuel 以琥珀酸为燃料，溶液燃烧法合成高活性可见光驱动PrFeO3光催化剂

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Nanosystems: Physics, Chemistry, Mathematics Pub Date : 2022-12-28 DOI: 10.17586/2220-8054-2022-13-6-649-654

A. Seroglazova, V. Popkov

引用次数: 2

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 在一维耗散隧穿理论的框架下，利用导电原子力显微镜研究了Ni、Fe和Co纳米颗粒介电膜的隧穿电流-电压特性

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Nanosystems: Physics, Chemistry, Mathematics Pub Date : 2022-12-28 DOI: 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

{"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}

引用次数: 0

Spin Boltzmann machine 旋转玻尔兹曼机

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Nanosystems: Physics, Chemistry, Mathematics Pub Date : 2022-12-28 DOI: 10.17586/2220-8054-2022-13-6-593-607

I. Lobanov

引用次数: 0

Optimizing the carbonization temperature in the fabrication of waste cotton based activated carbon used as electrode material for supercapacitor 优化了制备超级电容器电极材料废棉活性炭的炭化温度

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Nanosystems: Physics, Chemistry, Mathematics Pub Date : 2022-10-31 DOI: 10.17586/2220-8054-2022-13-5-565-573

N.K. Thach, I. Krechetov, V. V. Berestov, T.L. Lepkova, S. Stakhanova

引用次数: 0

Growth of carbon nanotubes on a finely dispersed nickel metal and study its electrochemical application 碳纳米管在细分散镍金属上的生长及其电化学应用研究