Veer, Padmanabh: Investigation of the surface relief grating formation on amorphous azobenzene polymer films. 2009
Inhalt
- Table of Contents
- Preface
- Chapter 1-Structure and properties of azobenzene polymers
- 1.1 Introduction
- 1.2 Light induced motion in azopolymer
- 1.3 Geometric isomers of azobenzene
- 1.4 Structure and properties of pDR1M and pMEA
- 1.5 Theory of photo-orientation
- 1.6 Photoisomerisation kinetics
- 1.7 Types of motion during photo-orientation
- Chapter 2-Formation of surface relief gratings on azobenzene polymerthin films
- 2.1 Introduction
- 2.2 Photo-induced Mass Transport
- 2.3 Inscription of SRG
- 2.4 Continuous exposure measurements
- 2.5 Pulsed exposure measurements
- Chapter3-Alteration of mechanical properties of azopolymer film in theprocess of surface relief grating formation
- 3.1 Introduction
- 3.2 Atomic force microscope studies
- 3.3 Hardness analysis of SRGs using AFM
- 3.3.1 Experiment
- 3.3.2 Hardness measurements of SRGs on pDR1M
- 3.3.3 Hardness measurements of SRGs on pMEA
- 3.3.4 Hardness Analysis
- 3.3.5 Locating the hardness position
- 3.3.6 P Polarised grating analysis
- 3.4 Discussion
- 3.5 Summary
- Chapter 4-Theoretical models
- 4.1 Introduction
- 4.2 Free Volume model
- 4.3 Field Gradient model
- 4.4 Mean-Field Theory Model
- 4.5 Diffusion model
- 4.6 Comments on the models
- 4.7 Summary
- Chapter 5-Time and Temperature Dependence of Surface Relief GratingFormation
- 5.1 Introduction
- 5.2 Continuous exposure measurements
- 5.3 Rate of grating formation
- 5.3.1 Fluence Dependent rate of grating formation
- 5.3.2 Temperature Dependence rate of grating formation
- 5.3.3 Dipole moment dependent rate of SRG formation
- 5.4 Pulsed exposure measurements
- 5.4.1 Pulse Exposure on pDR1M
- 5.4.2 Temperature dependent pulse exposure, pDR1M
- 5.4.3 Temperature dependent pulse exposure, pMEA
- 5.5 AFM characterization of grating samples
- 5.6 Discussion
- Chapter 6-Modeling visible light scattering data
- 6.1 Introduction
- 6.2The viscoelastic model
- 6.3 Fitting Visible Light scattering data
- 6.4 Viscoelastic to Viscoplastic approach
- 6.5 Summary
- Chapter 7-Light induced Orientation of azobenzene chromophores
- 7.1 Introduction
- 7.2 Deformation of the Polymer Film
- 7.3 Polarization dependence of SRG formation
- 7.4 Grating inscription below room temperature
- Schematic representation of SRG formation
- Summary and conclusion
- Appendix A
- Acknowledgement
- Eidesstattliche erklärung