Search for dissertations about: "crystal growth"

Showing result 11 - 15 of 292 swedish dissertations containing the words crystal growth.

  2. 11. The Crystal Structure of III-V Semiconductor Nanowires: Growth and Characterization

    Author : Jessica Bolinsson; Fasta tillståndets fysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; metal-organic vapour phase epitaxy; MOVPE; scanning tunneling microscopy; cathodoluminescence; XSTM; crystal structure; polytypism; III-V semiconductor materials; nanowires; Fysicumarkivet A:2010:Bolinsson;

    Abstract : This thesis concerns growth and characterization of gold-particle seeded nanowires of III-V semiconductor materials (III-V NWs). The nanowires were grown using metal-organic vapour phase epitaxy (MOVPE) and characterized by various microscopy techniques. READ MORE

  4. 12. In-situ Study of the Growth, Composition and Morphology of III-V Semiconductor Nanowires

    Author : Robin Sjökvist; NanoLund: Centre for Nanoscience; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Nanowire; Semiconductor; III-V; Transmission Electron Microscopy; In-situ; Environmental TEM; Crystal growth;

    Abstract : It is widely known that nanoparticle seeded growth of III-V semiconductor nanowires often occurs via the vapor-liquid-solid mechanism. However, conventional growth of nanowires is carried out in closed systems, where mostof the details and dynamics of the growth are impossible to follow. READ MORE

  5. 13. Non-Linear Optical Titanyl Arsenates Crystal Growth and Properties

    Author : Jenni Nordborg; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; top seeded solution growth; titanyl arsenates; ferroelectrics; KTP isomorphs; charge density; non-linear optical crystals;

    Abstract : Crystals are appreciated not only for their appearance, but also for their unique physical properties which are utilized by the photonic industry in appliances that we come across every day. An important part of enabling the technical use of optical devices is the manufacture of crystals. READ MORE

  6. 14. Process modeling of semibatch reaction crystallization

    Author : Marie Ståhl; Åke Rasmuson; Hermann J.M. Kramer; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Reaction crystallization; benzoic acid; nucleation; growth; kinetics; growth rate dispersion; Chemical physics; Kemisk fysik;

    Abstract : This thesis aims at increasing the fundamental understanding of reaction crystallization by modeling, simulations and parameter estimation. Benzoic acid is used as the model compound. READ MORE

  7. 15. Grain growth by Ordered Coalescence of crystallites in Ceramics : Grain Growth Mechanisms, Microstructure Evolution and Sintering

    Author : Jianfeng Hu; Zhijian James Shen; Jekabs Grins; Viveka Alfredsson; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Inorganic Chemistry; oorganisk kemi;

    Abstract : Grain growth and densification process play the two most crucial roles on the microstructure evolution and the achieved performances during sintering of ceramics. In this thesis, the grain growth of SrTiO3, BaTiO3-SrTiO3 solid solutions and Si3N4 ceramics during spark plasma sintering (SPS) were investigated by electron microscopy. READ MORE