| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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Frequency Response of the Sample Vibration Mode in Scanning Probe Acoustic Microscope |
ZHAO Ya-Jun, CHENG Qian, QIAN Meng-Lu
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| Institute of Acoustics, Tongji University, Shanghai 200092 |
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| Cite this article: |
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ZHAO Ya-Jun, CHENG Qian, QIAN Meng-Lu 2010 Chin. Phys. Lett. 27 056201 |
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Abstract Based on the interaction mechanism between tip and sample in the contact mode of a scanning probe acoustic microscope (SPAM), an active mass of the sample is introduced in the mass-spring model. The tip motion and frequency response of the sample vibration mode in the SPAM are calculated by the Lagrange equation with dissipation function. For the silicon tip and glass assemblage in the SPAM the frequency response is simulated and it is in agreement with the experimental result. The living myoblast cells on the glass slide are imaged at resonance frequencies of the SPAM system, which are 20 kHz, 30 kHz and 120 kHz. It is shown that good contrast of SPAM images could be obtained when the system is operated at the resonance frequencies of the system in high and low-frequency regions.
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| Keywords:
62.30.+d
68.37.Ps
07.79.Lh
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Received: 22 December 2009
Published: 23 April 2010
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| PACS: |
62.30.+d
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(Mechanical and elastic waves; vibrations)
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68.37.Ps
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(Atomic force microscopy (AFM))
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07.79.Lh
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(Atomic force microscopes)
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