A. N. Sharov, D. Lukyanenko, A. Tikhonravov, A. Yagola
{"title":"Evaluation of the efficiency of the simplified simulator of the optical coating deposition process","authors":"A. N. Sharov, D. Lukyanenko, A. Tikhonravov, A. Yagola","doi":"10.55959/msu0579-9392.78.2320102","DOIUrl":"https://doi.org/10.55959/msu0579-9392.78.2320102","url":null,"abstract":"The paper presents a comparison of the results of simulating the processes of deposition of optical coatings\u0000using a simplified simulator and a full simulator that takes into account the main error-producing factors\u0000of deposition processes and control of coating layer thicknesses. For the simulators under consideration, the\u0000distributions of error vector norms in the layer thicknesses of coating, layer error correlation coefficients, and\u0000error self-compensation coefficients are calculated. It is shown that the simplified simulator allows one to\u0000obtain adequate results for evaluating the deposition process of real multilayer optical coatings and, thus,\u0000can be used for faster modeling of a large number of coatings with further analysis of their stability against\u0000manufacturing errors.","PeriodicalId":399279,"journal":{"name":"Seriya 3: Fizika, Astronomiya","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124422235","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}
{"title":"Platonic and Archimedean bodies as the basis of the structure\u0000of self-accommodating complexes of martensite crystals in alloys\u0000with shape memory effects","authors":"A. G. Khundjua, E. A. Brovkina","doi":"10.55959/msu0579-9392.78.2320502","DOIUrl":"https://doi.org/10.55959/msu0579-9392.78.2320502","url":null,"abstract":"The aim of the work is to analyze the relationship of the architecture of self-accommodation complexes\u0000(SC) with the lattice syngony of martensite crystals. Self-accommodating complexes consist of a set of\u0000pairwise twinned domains — crystals of martensite belonging to crystallographically equivalent variants of\u0000the orientation relationship between the lattices of austenite and martensite. The simplest SC are calculated\u0000for tetragonal, orthorhombic, rhombohedral and monoclinic distortion of the cubic lattice of austenite. It is\u0000shown that complete self-accommodation is possible only in complexes containing simultaneously all variants\u0000of the orientation relation.\u0000The issue of external faceting of complexes is discussed. The reason for the formation of SC is the minimization\u0000of elastic energy, i.e. the appearance regulated by the energy of the interphase boundary. On the other hand,\u0000if the outer surface of the SC is a polyhedron, then its symmetry should \"fit\"into the anisotropy of the elastic\u0000properties of austenite. For reasons of symmetry, it is clear that the polyhedron must be correct and have\u0000the same symmetry elements as the cubic lattice of austenite, while the axes of symmetry of the cubic lattice\u0000of austenite must coincide with the axes of symmetry of the polyhedron. Similar polyhedra are some of the\u0000bodies of Platon and Archimedes, which have axes of symmetry of the 2nd, 3rd and 4th order. A number of\u0000examples calculated in the work confirms the possibility of the existence of complexes in the form of these\u0000polyhedra.","PeriodicalId":399279,"journal":{"name":"Seriya 3: Fizika, Astronomiya","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126305614","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}