Measurement of 5-eV atomic oxygen using carbon-based films: preliminary results
Measurement of 5-eV atomic oxygen using carbon-based films: preliminary results
Carbon-based sensors have been developed to measure the atmospheric neutral atomic oxygen (AO) flux experienced by spacecraft in low Earth orbit. Thin- and thick-film carbon sensor elements were deposited onto an alumina substrate between thick-film gold tracks and silver palladium solder pads. AO flux is deduced by measuring resistance changes as the carbon film erodes and applying a simple theory. A wide range of responses were observed that are dependent on the deposition process and post deposition annealing. The deposition methods used were dc magnetron sputtering, e-beam evaporation, and screen-printing. The sensors tested compare favorably with similar silver-based sensors that have been flown previously on small satellite missions with significant mass/power constraints.
annealing, carbon, gas sensors, oxygen, sputter deposition, thick films, thin films
1206-1213
White, C.B.
15866a85-ac44-4239-b7a9-de3d45e5aa1f
Roberts, G.T.
deaf59ac-e4ee-4fc2-accf-df0639d39368
Chambers, A.R.
74fa9b7e-6362-478e-a038-15f2828c5446
2005
White, C.B.
15866a85-ac44-4239-b7a9-de3d45e5aa1f
Roberts, G.T.
deaf59ac-e4ee-4fc2-accf-df0639d39368
Chambers, A.R.
74fa9b7e-6362-478e-a038-15f2828c5446
White, C.B., Roberts, G.T. and Chambers, A.R.
(2005)
Measurement of 5-eV atomic oxygen using carbon-based films: preliminary results.
IEEE Sensors Journal, 5 (6), .
(doi:10.1109/JSEN.2005.858973).
Abstract
Carbon-based sensors have been developed to measure the atmospheric neutral atomic oxygen (AO) flux experienced by spacecraft in low Earth orbit. Thin- and thick-film carbon sensor elements were deposited onto an alumina substrate between thick-film gold tracks and silver palladium solder pads. AO flux is deduced by measuring resistance changes as the carbon film erodes and applying a simple theory. A wide range of responses were observed that are dependent on the deposition process and post deposition annealing. The deposition methods used were dc magnetron sputtering, e-beam evaporation, and screen-printing. The sensors tested compare favorably with similar silver-based sensors that have been flown previously on small satellite missions with significant mass/power constraints.
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Published date: 2005
Keywords:
annealing, carbon, gas sensors, oxygen, sputter deposition, thick films, thin films
Organisations:
Engineering Mats & Surface Engineerg Gp, Aerodynamics & Flight Mechanics, Astronautics Group
Identifiers
Local EPrints ID: 23671
URI: http://eprints.soton.ac.uk/id/eprint/23671
ISSN: 1530-437X
PURE UUID: d7b6d74a-2303-49f2-9692-412e8dec6a4e
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Date deposited: 20 Mar 2006
Last modified: 15 Mar 2024 06:49
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Author:
C.B. White
Author:
A.R. Chambers
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