Helium detection via field ionization from carbon nanotubes

Riley, D.J., Mann, M., MacLaren, D.A. , Dastoor, P.C., Allison, W., Teo, K.B.K., Amaratunga, G.A.J. and Milne, W. (2003) Helium detection via field ionization from carbon nanotubes. Nano Letters, 3(10), pp. 1455-1458. (doi:10.1021/nl034460c)

Riley, D.J., Mann, M., MacLaren, D.A. , Dastoor, P.C., Allison, W., Teo, K.B.K., Amaratunga, G.A.J. and Milne, W. (2003) Helium detection via field ionization from carbon nanotubes. Nano Letters, 3(10), pp. 1455-1458. (doi:10.1021/nl034460c)

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Abstract

A novel, high-efficiency detector for neutral atoms such as helium is described. The design uses multiwalled carbon nanotubes (MWNTs), grown by chemical vapor deposition on a steel support wire. Application of a positive bias to the MWNTs generates electric fields sufficient to field-ionize passing gas-phase atoms. Under ultrahigh vacuum conditions, the detector was demonstrated to be capable of ionising and detecting even helium gas, the element with the highest ionization potential.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:MacLaren, Dr Donald
Authors: Riley, D.J., Mann, M., MacLaren, D.A., Dastoor, P.C., Allison, W., Teo, K.B.K., Amaratunga, G.A.J., and Milne, W.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Nano Letters
Publisher:American Chemical Society
ISSN:1530-6984
ISSN (Online):1530-6992
Published Online:04 September 2003

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