AVS 59th Annual International Symposium and Exhibition
    Nanometer-scale Science and Technology Thursday Sessions
       Session NS-ThP

Paper NS-ThP14
Field Emission Based Hydrogen Sensing Characteristics from Carbon Nanotubes Synthesized on Catalytical Substrates

Thursday, November 1, 2012, 6:00 pm, Room Central Hall

Session: Nanometer-scale Science and Technology Poster Session
Presenter: C. Dong, Wenzhou University, Republic of China
Correspondent: Click to Email

A new hydrogen sensing concept is demonstrated based on the field emission form multi-walled carbon nanotubes. The low emission currents rise in proportional to hydrogen partial pressures above from 10-9 to 10-5 Torr. Catalytic Ni participated C-H reactions in low emission regime are considered the key factor of the sensing behavior. Simple setup, tiny structure, high sensitivity, and fast recovery make this innovative technique attractive to build miniature low cost hydrogen sensors for low pressure applications.