Sökning: "carbon nanomaterials"

Visar resultat 21 - 25 av 55 avhandlingar innehållade orden carbon nanomaterials.

  1. 21. Single-Walled Carbon Nanotubes : A theoretical study of stability, growth and properties

    Författare :Daniel Hedman; Andreas Larsson; Sven Öberg; Esko I. Kauppinen; Luleå tekniska universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Applied Physics; Tillämpad fysik;

    Sammanfattning : Since their discovery over 25 years ago, scientists have explored the remarkable properties of single-walled carbon nanotubes (SWCNTs) for use in high-tech materials and devices, such as strong light-weight composites, efficient electrical wires, supercapacitors and high-speed transistors. However, the mass production of such materials and devices is still limited by the capability of producing uniform high-quality SWCNTs. LÄS MER

  3. 22. Covalent functionalization of carbon nanomaterials for bioelectrochemical applications

    Författare :Naoual Allali; Alexander Soldatov; Manuel Dossot; Victor Mamane; Silvia Giordani; Luleå tekniska universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Experimentell fysik; Experimental Physics;

    Sammanfattning : Carbon nanotubes (CTNs) are renowned for their exceptional electronic and mechanical properties. Their structure can be considered as rolling up a graphene sheet along a specific crystallographic direction, leading to a 1D confinement of the electronic wavefunction of the delocalized electrons along the perimeter of the cylindrical structure thus obtained. LÄS MER

  4. 23. Carbon nanotubes in nanomedicine

    Författare :Ramy El-Sayed; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The development of nanomedicine is based primarily on the development of smart and multifunctional nanomaterials that can serve under the different clusters including drug delivery systems, diagnostics, and regenerative medicine. Recently, carbon nanotubes (CNTs) have received enormous attention due to their extraordinary properties. LÄS MER

  5. 24. Thermal Conductivity of Hygroscopic Foams Based on Cellulose Nanomaterials

    Författare :Varvara Apostolopoulou-Kalkavoura; Lennart Bergström; Tatiana Budtova; Stockholms universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; thermal conductivity; cellulose nanomaterials; foams; hygroscopic; super-insulating; phonon scattering; moisture uptake; heat transport; Materials Chemistry; materialkemi;

    Sammanfattning : Biobased super-insulating materials could mitigate climate change by minimizing the use of petroleum-based materials, creating artificial carbon sinks and minimizing the energy needed to maintain pleasant interior conditions. Cellulose nanomaterials (CNM) produced from abundantly available cellulose sources constitute versatile, highly anisotropic raw materials with tunable surface chemistry and high strength. LÄS MER

  7. 25. Graphite oxides for preparation of graphene related materials : structure, chemical modification and hydrogen storage properties

    Författare :Alexey Klechikov; Alexandr Talyzin; Tamás Szabó; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Graphite oxide; graphene oxide; hydrogen storage; nanomaterials; adsorption; surface area; pore volume; Materials Science; materialvetenskap;

    Sammanfattning : Carbon materials have been studied for hydrogen storage for decades, but they showed too low capacity at ambient temperature compared to target values for practical applications. This thesis includes two parts. First one is fundamental study of graphite oxides (GO) structure and properties. LÄS MER