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October 1st, 2003
Nanotube helium sensors could bring atom beam microscope
Scientists from the University of Cambridge, UK, have come up with a high-efficiency technique for detecting neutral atoms such as helium. The researchers used multiwalled carbon nanotubes under a positive bias to field-ionize passing gas atoms. “Our research has focused on the detection of helium, which we use for surface structural studies, although it is clear that the new detector will be appropriate for all gaseous species,” Donald MacLaren told nanotechweb.org.
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