title: ÐÐ¸ÑÐ»Ð¾ÐºÐ°ÑÐ¸Ð¸ Ð½ÐµÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²Ð¸Ñ Ð² ÐºÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ½ÑÑ Ð½Ð°Ð½Ð¾Ð¿ÑÐ¾Ð²Ð¾Ð»Ð¾ÐºÐ°Ñ Ñ Ð¿ÑÐ°Ð²Ð¸Ð»ÑÐ½ÑÐ¼Ð¸ Ð¼Ð½Ð¾Ð³Ð¾ÑÐ³Ð¾Ð»ÑÐ½ÑÐ¼Ð¸ Ð¿ÑÐ¸Ð·Ð¼Ð°ÑÐ¸ÑÐµÑÐºÐ¸Ð¼Ð¸ ÑÐ´ÑÐ°Ð¼Ð¸
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Mismatch dislocations in composite nanowires with regular polygonal prismatic cores
Creators: name: ÐÑÐ³ÑÐ½Ð¾Ð²Ð°, ÐÐ¹ÑÐ°Ð»Ð¸Ð½Ð°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2020
Subjects: ÐÐ°Ð¿ÑÑÐ¶ÐµÐ½Ð¸Ñ (Ð¼ÐµÑ .)
ÐÐ°Ð½Ð¾ÑÑÑÑÐºÑÑÑÐ½ÑÐµ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ñ
ÐÑÐ¾Ð²Ð¾Ð»Ð¾ÐºÐ°
ÐÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ¸Ð¾Ð½Ð½ÑÐµ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ñ
Ð´Ð¸ÑÐ»Ð¾ÐºÐ°ÑÐ¸Ñ Ð½ÐµÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²Ð¸Ñ
Ð²ÐºÐ»ÑÑÐµÐ½Ð¸Ðµ Ð² Ð²Ð¸Ð´Ðµ Ð¼Ð½Ð¾Ð³Ð¾ÑÐ³Ð¾Ð»ÑÐ½Ð¾Ð¹ Ð¿ÑÐ¸Ð·Ð¼Ñ
misfit dislocation
inclusion in the form of polygonal prism

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description: The dissertation contains 51 pages, 17 figures, 40 formulas and 63 sources of literature. Key words: nanowire; misfit stress; stress relaxation; core-shell nanowires; misfit dislocation; inclusion in the form of polygonal prism. Object of study: Core-shell nanowires with cores in the form of long regular polygonal prisms of triangular, square and hexagonal cross-sections. Objective: to study the conditions for the formation of a single straight misfit dislocation at the interface in composite core-shell nanowires with cores in the form of long regular polygonal prisms of triangular, square and hexagonal cross-sections. Research results: The energies of interaction of misfit dislocations with misfit stresses in composite core-shell nanowires with long prismatic cores in the form of triangular, quadrangular and hexagonal prisms are numerically determined. It is shown that the interaction energy of the dislocation with the misfit stress field in nanowires with polygonal cores growing on a free cylindrical surface takes a nonzero value, and this value is proportional to the area of segments enclosed between the interface and the free surface of the nanowires. In addition, it was found that the interaction energy of the dislocation and the misfit stress field in a cylindrical nanowire with a coaxial polygonal core can be accurately approximated by the well-known analytical expressions for the interaction energy of the dislocation and the misfit stress field of a cylindrical nanowire with a coaxial cylindrical core, if the cross-sectional areas of their cores are equal. The critical misfit of composite nanowires with long prismatic cores of triangular, quadrangular and hexagonal prisms for the nucleation of a straight misfit dislocation is numerically determined. It has been established that in the case of thin cores (thick shells), the most stable structure is the nanowire with a core in the form of a triangular prism, while the least stable is the nanowire with a cylindrical core. In the case of thick cores (thin shells), the most stable structure is the nanowire with a cylindrical core, while the least stable is the nanowire with a core in the form of a triangular prism.