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We demonstrate an application of a nanotube cantilever for zeptogram-level mass detection. This letter presents a quantitative method to measure the oscillation amplitude of a nanotube cantilever using a focused electron beam of a scanning electron microscope. The quality factor of ∼1000 for the nanotube cantilever is revealed and the resolution of the resonant frequency is achieved to be ∼10Hz, which corresponds to a mass range of less than 100zg at room temperature.
Nishio et al. (Thu,) studied this question.
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