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- W2016122991 abstract "The elastic behavior of a screw dislocation which is positioned inside the shell domain of an eccentric core–shell nanowire is addressed with taking into account the surface/interface stress effect. The complex potential function method in combination with the conformal mapping function is applied to solve the governing non-classical equations. The dislocation stress field and the image force acting on the dislocation are studied in detail and compared with those obtained within the classical theory of elasticity. It is shown that near the free outer surface and the inner core–shell interface, the non-classical solution for the stress field considerably differs from the classical one, while this difference practically vanishes in the bulk regions of the nanowire. It is also demonstrated that the surface with positive (negative) shear modulus applies an extra non-classical repelling (attracting) image force to the dislocation, which can change the nature of the equilibrium positions depending on the system parameters. At the same time, the non-classical solution fails when the dislocation approaches very close to the surface/interface with negative shear modulus. The effects of the core–shell eccentricity and nanowire diameter on dislocation behavior are discussed. It is shown that the non-classical surface/interface effect has a short-range character and becomes more pronounced when the nanowire diameter is smaller than 20 nm." @default.
- W2016122991 created "2016-06-24" @default.
- W2016122991 creator A5012664929 @default.
- W2016122991 creator A5073710486 @default.
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- W2016122991 date "2012-06-01" @default.
- W2016122991 modified "2023-10-06" @default.
- W2016122991 title "Surface/interface effects on elastic behavior of a screw dislocation in an eccentric core–shell nanowire" @default.
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- W2016122991 doi "https://doi.org/10.1016/j.ijsolstr.2012.03.020" @default.
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