Online Thesis Search Results

TITLE
DEDICATION
DECLARATION
CERTIFICATE
ACKNOWLEDGEMENT
CONTENTS
PREFACE
1. NUCLEATION PHENOMENON
1.1 Crystals and Crystal Growth
1.2 Nucleation
1.3 Energy of Formation in Homogeneous Nucleation
1.3 (i) Spherical nucleus
1.3 (ii) Cylindrical nucleus
1.4 Nucleation Rate
1.5 Limitations of Classical Nucleation Theory
1.6 Experimental Study of Nucleation
1.6 (i) Nucleation studies in vapor
1.6 (ii) Nucleation studies in solution
1.7 Induction Period
1.8 Experimental Determination of Induction Period
1.8 (i) Conductivity method
1.8 (ii) Turbidity method
1.8 (iii) Dilatometer method
1.8 (iv) Visual observation method
1.9 Heterogeneous Nucleation
1.10 Ostwald Ripening
References
2. PHASE TRANSFORMATIONS UNDER ELECTRIC FIELD: A CRITICAL APPROACH
2.1 Introduction
2.2 Theoretical Works
2.3 Experimental Reports
2.3 (i) Liquid droplets in vapor
2.3 (ii) Bubble formation in liquids
2.3 (iii) Crystal nucleation in solution
2.3 (iv) Crystallization of proteins
2.3 (v) Crystal formation in gel
2.3 (vi) Phase separation in glasses
2.3 (vii) Other changes
References
3. A REVIEW OF THE INFLUENCE OF MAGNETIC FIELD ON PHASE TRANSFORMATIONS
3.1 Introduction
3.2 Nucleation of Crystals in Solution
3.3 Growth Rate of Crystals in Solution
3.4 Effects on Crystallized Products
3.4 (i) Sodium nitrate crystals
3.4 (ii) Potassium sulfate and urea
3.4 (iii) Silver chloride
3.4 (iv) Barium sulfate crystals
3.5 Oriented Growth in Solution
3.6 Oriented Growth in Thin Films
3.7 Effect on Crystals Grown in Gel
3.8 Crystallization of Proteins and Macromolecules
3.9 Crystallization in Czochralski and Bridgman Techniques
References
4. THERMODYNAMICS AND KINETICS OF CRYSTAL NUCLEATION IN ELECTRIC AND MAGNETIC FIELDS
4.1 Introduction
4.2 Crystal Nucleation under Electric Fields
4.2 (i) Free energy of formation under electric fields
4.2 (ii) Equilibrium concentration of nuclei under electric fields
4.2 (iii) Numerical analysis
4.2 (iv) Nucleation rate of crystals under electric fields
4.3 Crystal Nucleation under Magnetic Fields
4.3 (i) Magnetic contribution to free energy of formation
4.3 (ii) Energy barrier to nucleation under magnetic fields
4.4 Conclusion
References
5. NUCLEATION STUDIES IN SITTING DROPS AND BULK SOLUTION PLACED IN ELECTRIC FIELDS
5.1 Design and Fabrication
5.1 (i) Experimental cell
5.1 (ii) Constant temperature chamber
5.1 (iii) Temperature control unit
5.2 Nucleation Study in Sitting Drops
5.2 (i) Sodium chloride
5.2 (ii) Pottassium chloride
5.2 (iii) Pottassium dihydrogen phosphate
5.2 (iv) Bis-thiourea zinc chloride
5.2 (v) Measurement of dielectric constants
5.3 Nucleation Study in Bulk Solution
5.4 Conclusion
References
6. NUCLEATION AND GROWTH OF CRYSTALS UNDER MAGNETIC EXPOSURE
6.1 Introduction
6.2 Growth of Crystals in Gel Medium
6.2 (i) Preparation and structure of silica gels
6.2 (ii) Preparation and structure of agarose gels
6.2 (i) Diffusion of solute in gel
6.2 (iv) Suspension of crystals
6.2 (v) Influence of gel on crystal nucleation
6.3 Nucleation and Growth of Calcium Tartrate Crystals
6.3 (i) Magnetic field set-up
6.3 (ii) Sample Preparation
6.3 (iii) Application of magnetic fields
6.3 (iv) Powder XRD studies
6.3 (v) IR spectra
6.3 (vi) Measurement of magnetic moment
6.3 (vii) Scanning electron microscopy
6.4 Results and Discussion
6.4 (i) Number and average size of crystals
6.4 (ii) Powder XRD data
6.4 (ii) IR spectra
6.4 (iv) Magnetic moment
6.4 (v) SEM observation
6.5 Nucleation, Growth and Charactarization of Praseodymium Tartrate Crystals
6.5 (i) Preparation of gel
6.5 (ii) Magnetic exposure and formation of crystals and Liesegang rings
6.5 (iii) Scanning electron microscopy
6.5 (iv) Powder XRD studies
6.5 (v) Vibrating sample magnetometry
6.5 (vi) Infrared spectroscopy
6.6 Discussion of Results
6.6 (i) Crystal formation
6.6 (ii) Liesegang rings
6.6 (iii) SEM micrographs
6.6 (iv) X- ray diffraction peaks
6.6 (v) IR spectra of the samples
6.7 Nucleation of Calcium Carbonate Crystals in Solution
6.7 (i) Experiment
6.7 (ii) Particle size analysis
6.7 (iii) Optical micrographs
6.7 (iv) XRD data
References
7. CONCLUDING NOTES AND SUGGESTIONS FOR FURTHER RESEARCH
7.1 Introduction
7.2 Impact of Electric Fields
7.3 Impact of Magnetic Fields
7.4 Scope for Future Research
References