Symmetric and asymmetric resonance characteristics of a tuning fork for shear-force detection

Jae Hoon Lee, Jang Hoon Yoo, Sang Youp Yim, Seung Han Park

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Abstract

The frequency response of a tuning fork intended for shear-force detection on a near-field scanning optical microscopy (NSOM) system has been investigated. In particular, a simplified model based on a coupled harmonic oscillator is presented to qualitatively describe the experimentally observed symmetric and asymmetric resonance behaviors of the tuning fork. We find that the elastic terms of the frequency response can produce a pinning down effect on one side of the main peak, resulting in a suppression of the background noise with a high Q-factor.

Original languageEnglish
Pages (from-to)455-459
Number of pages5
JournalJournal of the Korean Physical Society
Volume45
Issue number2
Publication statusPublished - 2004 Aug 1

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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