The term microstructure refers to the complete internal structure of a material on the micro, nano and atomic scales. On one hand, it records the entire history of a material’s processing and structuring (casting, forming, heat treatments, but also crystal growth, etc.) through its phase composition, defect structure and morphology. On the other hand, all properties (stiffness, formability, con...

transparent glasses in a system of li2o-mgo-sio2-al2o3-fchemical constituents were prepared by melt quenching method. in the fabrication of nanocrystal glass-ceramics, controlled nucleation and subsequent crystal growth were necessary to avoid loss of transparency. it was therefore important to understand thermal properties and crystallization kinetics of the glass ceramics. the crystallization...

Microstructure plays an essential role in determining the properties of crystalline materials. A widely used method to influence microstructure is the addition of nucleating agents. Observations on films formed from clay-polymer blends indicate that particulate additives, in addition to serving as nucleating agents, may also perturb crystal growth, leading to the formation of irregular dendriti...

We developed the theoretical and experimental method for chromatic dispersion of Borosilicate Crown microstructure optical fiber from scalar effective index method (SEIM) and TBC has been reported. To maintain the flat and zero dispersion in photonic crystal fiber (PCF) different air hole diameter has been introduced. Here we use Borosilicate Crown glass as a core material. A photonic crystal f...

We study simply laminated microstructures of a martensitic crystal capable of undergoing a cubic to orthorhombic transformation of type P ! P 0 . The free energy density modeling such a crystal is minimized on six energy wells that are pairwise rank-one connected. We consider the energy minimization problem with Dirichlet boundary data compatible with an arbitrary but xed simple laminate. We rs...

To understand the material characteristics of singleand poly-crystals of pure copper, the respective relationships between crystallographic orientations and microstructures, and the bending and mechanical properties were examined. And texture distribution is also analyzed. A bending test is performed in a SEM apparatus and while its behaviors are observed in situ. Furthermore, some analytical r...

We study simply laminated microstructures of a martensitic crystal capable of undergoing a cubic to orthorhombic transformation of type P ! P 0 . The free energy density modeling such a crystal is minimized on six energy wells that are pairwise rank-one connected. We consider the energy minimization problem with Dirichlet boundary data compatible with an arbitrary but xed simple laminate. We rs...

Thermoplastic elastomers (TPEs) are block copolymers made up of ‘‘hard’’ (glassy or crystalline) and ‘‘soft’’ (rubbery) blocks that self-organize into ‘‘domain’’ structures at a length scale of a few tens of nanometers. Under typical processing conditions, TPEs also develop a ‘‘polydomain’’ structure at the micron level that is similar to that of metal polycrystals. Therefore, from a continuum ...