Figure 2.21 shows that the higher vibration modes are in frequency ranges
where phonons are found. This may lead to interesting thermal resonance phenomena. Vibrations of nanorods may be used to determine the mass of single
molecules, sitting on the surface, by measuring the frequency shift. Such a
device should be able to act as a kind balance to determine the weight of single
molecules or atoms [11,12].
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22j 2 Nanomaterials and Nanocomposites