- Title
- Helium detection via field ionization from carbon nanotubes
- Creator
- Riley, David J.; Mann, Mark; MacLaren, Donald A.; Dastoor, Paul C.; Allison, William; Teo, Kenneth B. K.; Amaratunga, Gehan A. J.; Milne, William
- Relation
- Nano Letters Vol. 3, Issue 10, p. 1455-1458
- Publisher Link
- http://dx.doi.org/10.1021/nl034460c
- Publisher
- American Chemical Society
- Resource Type
- journal article
- Date
- 2003
- Description
- 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.
- Subject
- helium; carbon nanotubes
- Identifier
- http://hdl.handle.net/1959.13/27643
- Identifier
- uon:1869
- Identifier
- ISSN:1530-6984
- Language
- eng
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