期刊
NANO LETTERS
卷 8, 期 11, 页码 3735-3738出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl801982v
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- EURYI [FP6-IST-021285-2]
Shrinking mechanical resonators to submicrometer dimensions (similar to 100 nm) has tremendously improved capabilities in sensing applications. In this Letter, we go further in size reduction using a 1 nm diameter carbon nanotube as a mechanical resonator for mass sensing. The performances, which are tested by measuring the mass of evaporated chromium atoms, are exceptional. The mass responsivity is measured to be 11 Hz.yg(-1) and the mass resolution is 25 zg at room temperature (1 yg = 10(-24) g and 1 Zg = 10(-21) g). By cooling the nanotube down to 5 K in a cryostat, the signal for the detection of mechanical vibrations is improved and corresponds to a resolution of 1.4 zg.
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