We present a study of capping-barrier layer （CBL） effect on electro-optical properties of box- and spherical-shaped quantum dots as well as of the electronic transport of a QDs-array It is shown that increasing the ...We present a study of capping-barrier layer （CBL） effect on electro-optical properties of box- and spherical-shaped quantum dots as well as of the electronic transport of a QDs-array It is shown that increasing the CBL-width leads to a considerable enhancement in third-order optical nonlinear susceptibilities （14 times in the quadratic electro-optic effect, 31 times for ω = ω0/3 and 14 times for ω = ω0 in the third harmonic generation）. The capping-barrier layer thus can be employed as a degree of freedom in engineering the electro-optical specifications of quantum-dot-based devices.展开更多
In this paper nonlinear analysis of a thin rectangular functionally graded piate is formulated in terms of von-Karman＇s dynamic equations. Functionaily Graded Material （FGM） properties vary through the constant thi...In this paper nonlinear analysis of a thin rectangular functionally graded piate is formulated in terms of von-Karman＇s dynamic equations. Functionaily Graded Material （FGM） properties vary through the constant thickness of the plate at ambient temperature. By expansion of the solution as a series of mode functions, we reduce the governing equations of motion to a Duffing＇s equation. The homotopy perturbation solution of generated Duffing＇s equation is also obtained and compared with numerical solutions. The sufficient conditions for the existence of periodic oscillatory behavior of the plate are established by using Green＇s function and Schauder＇s fixed point theorem.展开更多
文摘We present a study of capping-barrier layer （CBL） effect on electro-optical properties of box- and spherical-shaped quantum dots as well as of the electronic transport of a QDs-array It is shown that increasing the CBL-width leads to a considerable enhancement in third-order optical nonlinear susceptibilities （14 times in the quadratic electro-optic effect, 31 times for ω = ω0/3 and 14 times for ω = ω0 in the third harmonic generation）. The capping-barrier layer thus can be employed as a degree of freedom in engineering the electro-optical specifications of quantum-dot-based devices.
文摘In this paper nonlinear analysis of a thin rectangular functionally graded piate is formulated in terms of von-Karman＇s dynamic equations. Functionaily Graded Material （FGM） properties vary through the constant thickness of the plate at ambient temperature. By expansion of the solution as a series of mode functions, we reduce the governing equations of motion to a Duffing＇s equation. The homotopy perturbation solution of generated Duffing＇s equation is also obtained and compared with numerical solutions. The sufficient conditions for the existence of periodic oscillatory behavior of the plate are established by using Green＇s function and Schauder＇s fixed point theorem.
