An ultrasensitive vibrating channel mass sensor based on tunnelling current detection

We present a new design of a mass sensor capable of detecting mass values in the zeptogram range. The sensor comprises a resonant beam and two gate electrodes used to oscillate the beam at its resonance frequency. The detection method is based on the tunnelling current between the vibrating beam and the gate electrodes. When a small mass is added to the beam, the latter sees a shift in its resonant frequency. The added mass thus leads to a decrease in the oscillation's amplitude and hence a drop in the tunnelling current.


Published in:
Advanced Research In Physics And Engineering, 97-102
Presented at:
2nd WSEAS International Conference on Nanotechnology/5th WSEAS International Conference on Optics Astrophysics-Astronomy /1st WSEAS International Conference Plasma, Fusion, Nuclear Physics, Cambridge, ENGLAND, Feb 20-22, 2010
Year:
2010
Publisher:
World Scientific And Engineering Acad And Soc, Ag Loannou Theologou 17-23, 15773 Zographou, Athens, Greece
ISBN:
978-960-474-163-2
Keywords:
Laboratories:




 Record created 2011-12-16, last modified 2018-03-17


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