Educational guide 2014_15 School of Chemical Engineering

Nanoscience, Materials and Processes: Chemical Technology at the Frontier

Contents

Topic	Sub-topic
1. - Symmetry in crystalline materials.	Introduction to Crystallography. Basic terminology. Symbols and terms. Point groups of crystal symmetry. Space groups of crystal symmetry.
2.-Anisotropy of the physical properties of materials.	Physical properties such as tensile. Basic terminology. Top of Newman. Compatibility between symmetry and physical property. The value of a property in a certain direction. Curie Principle: Influence of an external agent of change in a material symmetry.
3.-Relationship between crystal structure and morphology of crystals.	Nucleation and crystal growth. Size and shape of the crystals / particles depending on growth conditions. Principles Curie and Wulff theorem by way of balance and growth. Types of surfaces of crystalline materials.
4.- Characterization of the materials X-ray diffraction.	Diffraction technique polycrystalline material. The intensities of the diffracted rays: Factor structure and its applications. Identification of unknown phases. Measurements of crystal cell parameters. Refinement of crystal structures by X-ray diffraction. X-ray diffraction with high-temperature chamber. Polymorphism and phase transition by varying temperature. Expansion of a crystalline material by X-ray diffraction. Thermal expansion tensor of anisotropic materials.
5.-Characterization of the texture of the materials.	Dimensional diffraction X-ray. Ewald sphere. Goniometer for texture analysis. Euler goniometer geometry of Schulz. Characterization of thin layers. Orientation of crystalline materials for cutting

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