Sökning: "chemical vapour deposition"

Visar resultat 31 - 35 av 75 avhandlingar innehållade orden chemical vapour deposition.

  1. 31. Synthesis and characterization of palladium based carbon nanostructure-composites and their clean-energy application

    Författare :Florian Nitze; Thomas Wågberg; Ludvig Edman; Kordas Krisztian; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Carbon nanostructures; chemical vapour deposition; electro catalysts; transmission electron microscopy; direct formic acid fuel cells; Solid State Physics; fasta tillståndets fysik;

    Sammanfattning : Carbon nanostructures are a wide field with many applications. The use of carbon nanostructures as support in heterogeneous catalysis is a key development that led together with the use of nanoparticles to a significant cost reduction of catalysts. Catalysts designed in this way are widely applied in fuel cell technologies. LÄS MER

  3. 32. Development of a method for highly localized growth of carbon nanotubes

    Författare :Staffan Dittmer; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; chemical vapour deposition; low temperature CVD; local heating; resistive growth; Carbon nanotubes;

    Sammanfattning : A method for growing carbon nanotubes on chip using highly localizedresistive heating is developed. By deliberately designing molybdenumelectrodes to be highly resistive in a very small region we create amicrometer sized hot-zone where carbon nanotubes can be grown. LÄS MER

  4. 33. CVD on Iron Powder - Using Fluidising Bed Techniques

    Författare :Lars Nilsson; Industriell Produktion; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; aluminium oxide; alumina; chemical vapour deposition; eddy current losses; FBR; iron; fluidising bed reactor; powder; SiO2; SMC; TiO2; Al2O3; soft ma etic com sites; CVD;

    Sammanfattning : Today's electrical energy conversion devices, such as motors, transformers, inductors and generators, are based on laminated magnetic cores for reduction of eddy current losses, imposing a two-dimensional magnetic flux distribution. Using a three-dimensional magnetic flux distribution while maintaining low magnetic losses requires new approaches to magnetic core materials. LÄS MER

  5. 34. Field emission from multi-walled carbon nanotubes

    Författare :Martin Sveningsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; electron field emission; scanning tunneling microscope STM ; scanning electron microscope SEM ; transmission electron microscope TEM ; chemical vapour deposition; black-body radiation; current densities; carbon nanotubes;

    Sammanfattning : .... LÄS MER

  7. 35. Employing Metal Iodides and Oxygen in ALD and CVD of Functional Metal Oxides

    Författare :Jonas Sundqvist; Anders Hårsta; Roy Gordon; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Inorganic chemistry; CVD; ALD; tantalum oxide; hafnium oxide; tin oxide; epitaxy; Ta2O5; HfO2; SnO2; XRD; Oorganisk kemi; Inorganic chemistry; Oorganisk kemi; Inorganic Chemistry; Oorganisk kemi;

    Sammanfattning : Many materials exhibit interesting and novel properties when prepared as thin films. Thin film metal oxides have had an impact on the technological progress of the microelectronics mainly due to their electrical and optical properties. LÄS MER