Search for dissertations about: "carbon nanotubes CNT"

Showing result 1 - 5 of 44 swedish dissertations containing the words carbon nanotubes CNT.

2. 1. Mechanical behaviour of carbon nanostructures

   Author : Henrik Jackman; Krister Svensson; Pavel Krakhmalev; Eleanor E. B. Campbell; Karlstads universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; carbon nanotubes; CNT; multiwalled carbon nanotubes; MWCNT; rippling; buckling; mechanical properties; transmission electron microscopy; TEM; scanning electron microscopy; SEM; atomic force microscopy; AFM; Young’s modulus; in situ TEM; in situ SEM; Physics; Fysik;

   Abstract : AbstractCarbon nanotubes (CNTs) have extraordinary mechanical and electrical properties. Together with their small dimensions and low density, they are attractive candidates for building blocks in future nanoelectromechanical systems and for many other applications. READ MORE

4. 2. Cellulose–Assisted Dispersion of Carbon Nanotubes : From Colloids to Composites

   Author : Alireza Hajian; Lars Berglund; Milo Shaffer; KTH; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Nanocelluloses; Carbon nanotubes; Composites; Colloids; Fiber- och polymervetenskap; Fibre and Polymer Science;

   Abstract : It is a challenge to disperse nanoparticles to obtain a nanostructured composite. This thesis aims at providing a new route to fabricate carbon nanotube (CNT) composites and suggests mechanisms for nanocellulose–CNT interactions. This route is based on unmodified CNT dispersed in water with the help of nanocellulose. READ MORE

5. 3. Toward Carbon based NEMS

   Author : Farzan Alavian Ghavanini; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; carbon nanotubes CNT ; Nanoelectromechanical systems; and CMOS compatibility ; CNT-based switch; vertically aligned carbon nanofibers VACNF ; NEMS;

   Abstract : A systematic analysis and assessment of carbon nanotube (CNT) based NEMS switches is presented and their features are compared to typical complementary metal-oxide-semiconductor (CMOS) performance parameters. It is shown that CNT-based switches with considerably smaller leakage current compared to CMOS switches can be realized. READ MORE

6. 4. Towards Controlled Growth and Applications of Carbon Nanotubes

   Author : Raluca Elena Morjan; Chalmers tekniska högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; acetylene; carbon nanotubes; carbon feedstock; chemical vapor deposition; fullerenes; dc-glow discharge plasma; growth mechanism; metal catalyst;

   Abstract : This thesis deals with growth, characterization and application of carbon nanotubes. The methods involved in the production of carbon nanotubes are thermal chemical vapor deposition (T-CVD) and plasma enhanced chemical vapor deposition (PE-CVD). READ MORE

7. 5. Dispersing Carbon Nanotubes: Towards Molecular Understanding

   Author : Ricardo M. Ferreira Fernandes; Istvan Furo; Eduardo Marques; Philippe Poulin; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; carbon nanotubes; dispersion; surfactants; polymers; adsorption; liquid crystals; nuclear magnetic resonance; self-diffusion; Kemi; Chemistry;

   Abstract : Carbon nanotubes (CNTs) exhibit unique and fascinating intrinsic electrical, optical, thermal or mechanical properties that lead to a plethora of potential applications in composite materials, electronics, energy storage, medicine, among others. However, the manipulation of nanotubes is not trivial and there are significant difficulties to overcome before achieving their full potential in applications. READ MORE