Accurate Analytical Formulation of the Electro-elastic Fields of the Nanosized Quantum Wires and Guantum Dots in Piezoelectric Media with General Anisotropy

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Marashi, Saeede Sadat | 2018

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 53375 (09)
University: Sharif University of Technology
Department: Civil Engineering
Advisor(s): Mohammadi Shodja, Hossein
Abstract:
The electro-elastic fields of nano-sized piezoelectric structures are considered based on the non-classical continuum theory. Nowadays because of increasing the application of piezoelectric materials in nano technology and exclusive properties of this kind of materials, they can use as the ingredients of electromechanical systems. Therefore, the determination of induced electro-mechanical fields is important. In this study the constitutive equations based on non-classical continuum theory and general anisotropy for the elastic, piezoelectric and dielectric tensors are considered, and the electromechanical fields are determined using the micromechanical method. Furthermore, the size effects are studied and the results are compared with the classical approach. The electro-mechanical fields are notably different from those of classical results in the interface of the electro-elastic inclusion. Also, the results tend to the classical solutions as the size of inclusions increases
Keywords:
Quantum Wires ; Quantum Dots ; Nano Sized ; General Anisotropy ; Piezoelectric Materials ; Electro-Elastic Field