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Publication Detail
Nanodiamond-coated silicon cantilever array for chemical sensing
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Article
  • Authors:
    Ahmad RK, Parade AC, Hudziak S, Chaudhary A, Jackman RB
  • Publisher:
    AMER INST PHYSICS
  • Publication date:
    30/08/2010
  • Journal:
    APPL PHYS LETT
  • Volume:
    97
  • Issue:
    9
  • Print ISSN:
    0003-6951
  • Language:
    EN
  • Keywords:
    DIAMOND THIN-FILMS, NANOCRYSTALLINE DIAMOND, MICROCANTILEVER SENSORS, SURFACE STRESS, DNA, BIOCOMPATIBILITY, CARBON
  • Addresses:
    Jackman, RB
    UCL
    London Ctr Nanotechnol
    London
    WC1H 0AH
    England

    UCL
    Dept Elect & Elect Engn
    London
    WC1H 0AH
    England
Abstract
Diamond offers attractive properties as a material for microelectromechanical chemical sensors but is difficult to process in comparison with silicon. Here a method for attaching detonation-derived nanodiamonds to prefabricated and mounted Si cantilever devices is described. It is shown that this hybrid device has a resonant frequency shifted down, compared to Si alone, by around 10% due to a higher spring constant. Exposure to 2,4-dinitrotoluene leads to an easily observed decrease in resonant frequency. The mechanisms behind these observations are discussed and the promise for this form of hybrid cantilever structure for chemical sensors applications highlighted. 2010 American Institute of Physics. [doi:10.1063/1.3484277]
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