A novel carbon-nanotube gas sensor based on field ionization from branched nanostructures S. Darbari, Y. Abdi and S. Mohajerzadeh Eur. Phys. J. Appl. Phys., 52 3 (2010) 30602 Published online: 30 November 2010 DOI: 10.1051/epjap/2010156