Speaker
Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)?
No
Apply to be<br> considered for a student <br> award (Yes / No)?
No
Level for award<br> (Hons, MSc, <br> PhD, N/A)?
N/A
Abstract content <br> (Max 300 words)<br><a href="http://events.saip.org.za/getFile.py/access?resId=0&materialId=0&confId=34" target="_blank">Formatting &<br>Special chars</a>
Manipulation of electrical properties and hence gas sensing properties of multi-walled carbon nanotubes by filling the inner wall with vanadium is presented. Using a simple capillary technique, multi-walled carbon nanotubes are filled with vanadium oxide and this significantly enhances their sensitivity for gas detection. The encapsulated vanadium oxide inside the inner walls of carbon nanotubes increases the density of states around the Fermi level for the composite material and this improves the sensitivity of the filled carbon nanotubes. An adsorption mechanism on three different sites on the carbon nanotube surface based on the Langmuir model is proposed. This work further highlights the influence of ambient oxygen in carbon nanotubes based sensors an aspect which has not been clearly outlined in many earlier theoretical and experimental studies.
Main supervisor (name and email)<br>and his / her institution
Dr Bonex Mwakikunga,
DST-CSIR NCNSM, Council of Scientific and Industrial Research.
Please indicate whether<br>this abstract may be<br>published online<br>(Yes / No)
No
