Thesis0520

A Finite Element Study of Piezoelectric Thin Films on Substrates ,[object Object],[object Object]

OUTLINE OF PRESENTATION ,[object Object],[object Object],[object Object],[object Object]

BACKGROUND ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

BACKGROUND ,[object Object],[object Object],[object Object],[object Object]

BACKGROUND ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

BACKGROUND ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Effect of island periodicity has not been studied

BACKGROUND ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

BACKGROUND ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Description of the periodic structure MODELING PRELIMINARIES

MODELING PRELIMINARIES ,[object Object],[object Object],[object Object],[object Object]

MODELING PRELIMINARIES ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

MODELING PRELIMINARIES 1. Z. Bo, "Constitutive Modeling of Shape Memory Alloys", Doctoral Dissertation, Texas A&M University. (1996). Mechanical boundary conditions

MODELING PRELIMINARIES Electrical boundary conditions

MODELING PRELIMINARIES ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

MODELING PRELIMINARIES ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

MODELING PRELIMINARIES ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],0.232 0.166 Poisson’s ratio 189.7 310.5 Young’s modulus Y (GPa) STO MgO

TASKS ,[object Object],[object Object],[object Object],[object Object],[object Object]

A computational analysis of the interactions of geometric periodicity and lattice mismatch on the electromechanical response of piezoelectric thin films ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

TASK B Optimization of the mesh

TASK B Normalized displacement

A comparative numerical study of piezoelectric materials with tetragonal and hexagonal transversely isotropic symmetry on isotropic substrates ,[object Object]

TASK C ,[object Object],[object Object],[object Object]

TASK C Other effects on “effective” piezoelectric coefficient

Piezoelectric response and internal stress of periodic bi-island piezoelectric thin films on substrates ,[object Object]

TASK D Effects of different stiffness on internal stress

Ferroelectricity ,[object Object],[object Object],[object Object],[object Object],[object Object]

LIST OF PUBLICATIONS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object]

Thesis0520

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Thesis0520