NBICS technologies – concept of reformation or foundation of the future technological breakthrough? DOI: 10.22184/1993-8578.2021.14.2.88.93
Colibri, tucano and heron. What instrumentation of Gambetti Kenologia enters the Russian market? DOI: 10.22184/1993-8578.2021.14.2.94.100
Strength estimation of a prospective two-component conductor made of nanostructural aluminum alloys by the finite element method DOI: 10.22184/1993-8578.2021.14.2.150.158
In this paper the finite element method is used to assess the rational design of a prospective two-component conductor made of nanostructured aluminum alloys to ensure the required level of strength.
Look into the nanoworld: in contact DOI: 10.22184/1993-8578.2021.14.2.136.141
How can we see something hidden to the human eye and is not even visible in the best optical microscope? How can we observe atoms and molecules? How to view the objects of wild nature of nanoscale in details under normal conditions, in air or in liquid? An atomic force microscope comes to help ing us. We will talk about how it is arranged, which it consists of how it works and how it gets images of the nanoworld.
Prediction of target erosion of planar MSS DOI: 10.22184/1993-8578.2021.14.2.142.149
A simplified model of the magnetron discharge is proposed with the output of semi-empirical formulas that allow, knowing or calculating the distribution of the magnetic field over the target surface using the ELCUT software for calculating fields, to predict the shape of the MSS target erosion. A calculation program called Pretarger based on MATLAB has been developed. It is necessary to run the program to compare the predicted erosion with the developed targets for various magnetrons.
Ceramics created by the SPS-method from copper-oxide nanopowder DOI: 10.22184/1993-8578.2021.14.2.132.134
Fine-grained ceramics based on copper oxide nanopowder was prepared using spark plasma sintering (SPS) method. It is harder (with microhardness of 7.1 GPA) than ceramics obtained by the conventional method.
Atomic force microscopy: study of viruses DOI: 10.22184/1993-8578.2021.14.2.102.106
Viruses are nature objects of tens or hundreds nanometers. They often consist of only two types of molecules: nucleic acid, DNA or RNA, and proteins. Sometimes lipids are added. Viruses cannot reproduce independently, like bacteria. Replication of viruses is carried out by the infected cell itself by producing many copies of nucleic acids and proteins. In this paper we will study in details various types of viruses with the help of an atomic force microscope to see their structural features that make them invulnerable, and learn whether one viral particle can cause a disease.
Measurement of mechanical properties using instrumental indentation method in a large temperature range DOI: 10.22184/1993-8578.2021.14.2.108.116
This paper presents a review of solutions for studying the physical and mechanical properties of materials by instrumental indentation method in a temperature region from -60 to +450 °C using "NanoScan-4D" series of hardness meters. Scientific timeliness is beyond dispute because the majority of professionals in materials science are trying to solve the problem of behavior of the materials in expanded conditions of operation. Reviewed are the peculiarities of additional modules used for measuring hardness at alternating temperature conditions and indicated the advantages and limits of the considered configurations. A special effort is made to comparison of measurement systems where uniform temperature is maintained both in a sample and instrument with the devices where a sample is heated only. Introduced are the examples of a wide range of materials studied in various temperature ranges. Besides, the temperature dependence of aluminium matrix composite materials hardness in the range from 20 to 350°С has been presented.
Antireflective coatings based on polymer films with silver nanoparticles for solar cells DOI: 10.22184/1993-8578.2021.14.2.120.126
The work is devoted to obtaining and evaluating the effectiveness of film antireflection coatings for solar cells based on silver nanoparticles. The development aim of antireflection coatings is to reduce reflection of electromagnetic waves of visible and infrared light. The illumination effect is achieved by applying a polymer solution containing silver nanoparticles on the surface of the solar battery, which turns into a thin film in 24 hours. The coating was synthesized by the sol-gel method. The advantage of the considered coatings lies in the simple hardware design of their production. The comparative analysis of the solar cells efficiency showed that the modification of the solar battery with an antireflection coating increases its efficiency by 9.5%.