Geometrically nonlinear deformation and the emergent behavior of polarons in soft matter

Soft Matter ◽  
2015 ◽  
Vol 11 (41) ◽  
pp. 8042-8047 ◽  
Author(s):  
Xiaobao Li ◽  
Liping Liu ◽  
Pradeep Sharma
Keyword(s):  
Quantum Dots ◽  
Electronic Structure ◽  
Soft Matter ◽  
Nonlinear Deformation ◽  
Mechanical Strain ◽  
Emergent Behavior ◽  
Geometrically Nonlinear ◽  
Bulk Semiconductors ◽  
Geometrically Nonlinear Deformation

Mechanical strain can alter the electronic structure of both bulk semiconductors as well as nanostructures such as quantum dots.

Geometrically nonlinear deformation elastoplastic soil

2014 ◽  
Vol 8 ◽  
pp. 6341-6348 ◽  
Author(s):  
D. V. Berezhnoi ◽  
A. A. Sachenkov ◽  
M. K. Sagdatullin
Keyword(s):  
Nonlinear Deformation ◽  
Geometrically Nonlinear ◽  
Geometrically Nonlinear Deformation ◽  
Elastoplastic Soil

A numerical framework for geometrically nonlinear deformation of flexoelectric solids immersed in an electrostatic medium

2021 ◽  
pp. 1-41
Author(s):  
Moonhong Kim
Keyword(s):  
Nonlinear Deformation ◽  
Surrounding Medium ◽  
Weak Form ◽  
Momentum Conservation ◽  
Electric Polarization ◽  
Boundary Element Methods ◽  
Gradient Theory ◽  
Geometrically Nonlinear ◽  
Closed Form Solutions ◽  
Geometrically Nonlinear Deformation

Abstract A numerical formulation coupling finite and boundary element methods is developed to analyze the mechanical deformation and electric polarization of flexoelectric solids experiencing geometrically nonlinear deformation. The proposed method considers the electrical interactions among flexoelectric solids, electric charges, and their surrounding medium. First, a higher-order gradient theory is proposed based on the skew-symmetric couple stress model to analyze the geometrically nonlinear deformation of flexoelectric solids. This theory includes a total Lagrangian weak form that satisfies linear momentum conservation, angular momentum conservation, and Gauss's law. Based on the proposed theory, a finite element is developed using basis functions that satisfy C1 continuity. Second, a coupled formulation is developed to consider the electrical interactions among solids, electric charges, and their surrounding medium. In this formulation, conventional boundary elements are adopted to account for the electrostatic surroundings. Besides, electric boundary conditions are naturally imposed on solid boundaries according to the electrical interactions between solids and their electrostatic surroundings. Finally, the proposed method is validated via the comparisons of the numerical results with closed-form solutions.

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