Miniature carbon monoxide detector based on nanotechnology
EG Bakhoum, MHM Cheng - IEEE Transactions on …, 2012 - ieeexplore.ieee.org
IEEE Transactions on Instrumentation and Measurement, 2012•ieeexplore.ieee.org
A highly sensitive miniature carbon monoxide (CO) gas detector is introduced. The detector
makes use of the very high catalytic activity of gold nanoparticles. Gold nanoparticles are
deposited on the surfaces of an array of carbon nanotubes (CNTs). The CO gas is
transformed into CO 2 as it comes in contact with the nanoparticles, and free electrons are
released. The extra free electrons result in a measurable reduction in the resistivity of the
CNT array. The detector has proved to be very sensitive at room temperature to CO gas …
makes use of the very high catalytic activity of gold nanoparticles. Gold nanoparticles are
deposited on the surfaces of an array of carbon nanotubes (CNTs). The CO gas is
transformed into CO 2 as it comes in contact with the nanoparticles, and free electrons are
released. The extra free electrons result in a measurable reduction in the resistivity of the
CNT array. The detector has proved to be very sensitive at room temperature to CO gas …
A highly sensitive miniature carbon monoxide (CO) gas detector is introduced. The detector makes use of the very high catalytic activity of gold nanoparticles. Gold nanoparticles are deposited on the surfaces of an array of carbon nanotubes (CNTs). The CO gas is transformed into CO 2 as it comes in contact with the nanoparticles, and free electrons are released. The extra free electrons result in a measurable reduction in the resistivity of the CNT array. The detector has proved to be very sensitive at room temperature to CO gas concentrations as low as 100 parts per million. It is characterized by a very small size and can be easily powered with a battery.
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