Role of surface chemistry in hydrogen adsorption in single-wall carbon nanotubes

Curvature, vacancy size and chirality effects of mono- to octa-vacancies in zigzag single-walled carbon nanotubes

Defect modes with the smallest E_f were inclined to be along the armchair chain of (n,0) tubes.

Role of defects in single-walled carbon nanotube chemical sensors

We explore the electronic response of single-walled carbon nanotubes (SWNT) to trace levels of chemical vapors. We find adsorption at defect sites produces a large electronic response that dominates the SWNT capacitance and conductance sensitivity. This large response results from increased adsorbate binding energy and charge transfer at defect sites. Finally, we demonstrate controlled introduction of oxidation defects can be used to enhance sensitivity of a SWNT network sensor to a variety of chemical vapors.