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Anurak Udomvech. Architecture, energetic, and electronic proterties of carbon nanotubes for electronic applications. Doctoral Degree(Physics). Mahidol University. : Mahidol University, 2008.
Architecture, energetic, and electronic proterties of carbon nanotubes for electronic applications
สมบัติเชิงสถาปัตยกรรม พลังงานและอิเล็กทรอนของท่อนาโนคาร์บอนสำหรับประยุกต์กับอุปกรณ์อิเล็กทรอนิกส์
Name: Anurak Udomvech
LCSH:
Nanotubes
-- Carbon content
LCSH:
Density functionals
Abstract:
The prospect of carbon nanotube being applied to problems with energy storage and molecular electronic devices has been theoretically studied. In terms of electrode materials for energy storage devices, we found that the Li/Li+ are localized near the nanotube sidewall. Binding energies tend to depend on being odd or even on the chiral vector (n,0). It can be envisaged that the surface diffusion of Li/Li+ can easily take place along the internal wall, while being hindered on the external wall. In the case of two Li atoms adsorption inside 4 ˚A-diameter nanotubes, Li atoms can be pulled into the (3,3) and (4,2) tubes easier than (5,0) tube. The (5,0) tube allows the formation of a Li2 cluster near the tube center. In contrast, (3,3) tube prefers Li atoms to locate near the tube mouths, whereas there is no favored location found for (4,2) tube. The intercalated atoms affect the geometric parameters at the central region more than the rest of the nanotube. For mixed interior/exterior Li2 adsorptions on nanotubes, we found that the tubes helicities difference could affect the lithium coverage on the external wall. Free surface diffusion of Li is allowed on (4,2) and (5,0) tubes, implying that (3,3) tube could be less useful for anode material in Li-battery. These results show that chirality plays a crucial role in Li-nanotube interactions, which suggests that suitable chiralities are needed in Li battery. In terms of molecular electronic devices, we have examined the addition of the topological defects into the nanotubes wall as the straight and T-shape junction topologies in order to understand the relationship between the geometric and electronic properties. The results reveal that geometric and electronic structures are highly dependent on a variation in tube helicity and the diameter of the nanotubes."
Mahidol University
Address:
NAKHON PATHOM
Email:
liwww@mahidol.ac.th
Name: Teerakiat Kerdcharoen
Role:
Thesis Advisors
Created:
2008
Modified:
2020-11-04
Issued:
2009-07-28
วิทยานิพนธ์/Thesis
application/pdf
CallNumber:
TH A636a 2008
eng
DegreeName: Doctor of Philosophy
Level: Doctoral Degree
Descipline: Physics
Grantor: Mahidol University
©copyrights Mahidol University
RightsAccess:
ใช้เวลา
0.280008 วินาที
Anurak Udomvech
| Title | Contributor | Type |
|---|---|---|
| Architecture, energetic, and electronic proterties of carbon nanotubes for electronic applications
มหาวิทยาลัยมหิดล Anurak Udomvech | Teerakiat Kerdcharoen | วิทยานิพนธ์/Thesis |
| The geometry and electronic structure of nanotubes and their application as charge storage and transport devices
มหาวิทยาลัยมหิดล Anurak Udomvech | Teerakiat Kerdcharoen | วิทยานิพนธ์/Thesis |
Teerakiat Kerdcharoen