|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Phase Transformations and Microstructural Evolution
||Interplay of Substrate Interaction, Electric Field and Confinement on Microphase Separation of Diblock Copolymers
||Arnab Mukherjee, Rajdip Mukherjee, Kumar Ankit, Avisor Bhattacharya, Britta Nestler
|On-Site Speaker (Planned)
In the present work, we study morphologies arising due to competing substrate interaction, electric field and confinement effects during microphase separation of diblock copolymers. We employ a non-local Cahn-Hilliard model (Ohta-Kawasaki functional) taking into account the appropriate contributions of substrate interaction and electrostatic field by coupling with the Maxwell's equation. The model is applied to study the kinetic pathways of domain evolution in lamellae and cylinder forming block copolymers. The mechanisms of alignment by electric field is also discussed for varying substrate interaction strength and film thicknesses. Additionally, the complete phase diagram is mapped as a function of numerical parameters and the occurrence of parallel (substrate interaction dominant regime), perpendicular (electric field dominant regime) and intermediate phases (competing substrate and electric field) is highlighted.
||Planned: A print-only volume