Sökning: "Single-Walled Carbon Nanotubes"

Hittade 5 uppsatser innehållade orden Single-Walled Carbon Nanotubes.

1. 1. Patterned Nanocomposite of Carbon Nanotube/Polymer

   Master-uppsats, Umeå universitet/Institutionen för fysik

   Författare :Saeed Motaragheb Jafarpour; [2017]
   Nyckelord :;

   Sammanfattning : Single walled carbon nanotubes (SWCNTs) are carbon based nanostructures with extraordinary electronical and mechanical properties. They are used in a wide range of applications, usually embedded in polymer as fillers to form polymer based nanocomposites, in order to affect the electronic behavior of the polymer matrix. LÄS MER

3. 2. Investigation of catalyst composition for cobalt and iron catalyst on the chirality of grown single walled carbon nanotubes

   Master-uppsats, Umeå universitet/Institutionen för fysik

   Författare :Saeed Motaragheb Jafarpour; [2017]
   Nyckelord :;

   Sammanfattning : The synthesis of type-enriched semiconducting or metallic single-walled carbon nanotubes (sc/m-SWCNTs) with high quality by means of catalytic chemical vapor deposition (CCVD) are essential prerequisites for implementing of SWCNTs into nanodevices. In particular, the Fe−Co bimetallic catalysts system is promising due to its ability to grow SWCNTs by CCVD. LÄS MER

4. 3. Carbon Nanotube Raman Spectra Calculations using Density Functional Theory

   L3-uppsats, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Författare :Johan Jirlén; Emil Kauppi; [2017]
   Nyckelord :Density Functional Theory; DFT; Single-Walled Carbon Nanotubes; SWCNTs; Raman; Spectra; VASP;

   Sammanfattning : Utilizing density functional theory (DFT) the Vienna Ab initio Simulation Package (VASP) was used to calculate the Raman spectra for five single-walled carbon nanotubes (SWCNTs) with chiralities (4,4), (6,6), (8,0), (12,0) and (7,1). The radial breathing mode (RBM), when compared with experimental frequencies, shows good correlation. LÄS MER

5. 4. Thermal Stability of Carbon Nanotubes and Role of Intercalation

   Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Författare :Anton Landström; [2016]
   Nyckelord :Carbon nanotubes; raman; cnt; thermal; nanomaterials; spectroscopy; heating; stability;

   Sammanfattning : Research in carbon nanotubes (CNTs) has become a very active field in the past decades, with much interest in their electronic and mechanical properties. However, the thermal properties of CNTs are still not well understood, in particular the process of annealing; i.e. purification of samples by desorption of internal and external impurities. LÄS MER

7. 5. Atomic Force and Scanning Tunneling Microscopy Studies of Single Walled Carbon Nanotubes

   Magister-uppsats, Institutionen för ingenjörsvetenskap, fysik och matematik

   Författare :Joakim Hirvonen Grytzelius; [2006]
   Nyckelord :physics; carbon; nanotubes; afm; stm;

   Sammanfattning : In this diploma work I present the first experimental investigations of carbon nanotubes at Karlstads University. Raw nanotube powder of single walled carbon nanotubes have been dispersed primarily in 1,2-dichloroethane. The solutions have been spincoated on Au(111) substrates. LÄS MER