Understanding the influence of vacancies diffusion in utilizing the Kirkendall phenomenon for nanotubes formation

Author

Ren, Yi ; Chim, W.K. ; Chiam, S.Y.

Author_Institution

NUS Grad. Sch. for Integrative Sci. & Eng., Singapore, Singapore

fYear

2010

fDate

14-16 Oct. 2010

Firstpage

415

Lastpage

416

Abstract

In this work, vacancies diffusion length scale or the size of the nanostructures involved during oxidation when utilizing the Kirkendall phenomenon is presented. Ni nanowires with different diameters are formed by electrodeposition of Ni into anodic aluminium oxide (AAO) membrane. The oxidation of the dispersed Ni nanowires is carried out either via rapid thermal oxidation (RTO) or conventional furnace annealing over a temperature range from 350°C to 850°C in oxygen ambient. Then the NiO nanostructures formed are examined by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray diffraction (XRD).

Keywords

X-ray diffraction; chemical interdiffusion; electrodeposition; furnaces; nanofabrication; nanowires; nickel compounds; rapid thermal annealing; scanning electron microscopy; transmission electron microscopy; vacancies (crystal); Kirkendall phenomenon; NiO; SEM; TEM; X-ray diffraction; XRD; anodic aluminium oxide membrane; electrodeposition; furnace annealing; nanotube formation; nickel nanowires; nickel oxide nanostructures; oxidation; rapid thermal oxidation; scanning electron microscopy; temperature 350 degC to 850 degC; transmission electron microscopy; vacancies diffusion;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electron Sources Conference and Nanocarbon (IVESC), 2010 8th International

Conference_Location

Nanjing

Print_ISBN

978-1-4244-6645-0

Type

conf

DOI

10.1109/IVESC.2010.5644304

Filename

5644304