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Analysis of the “Push–pull” Capacitance Bridge Circuit for Comb-Drive Micro-electro-mechanical Oscillators

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Abstract

We have developed an improved actuation/detection scheme for a comb-drive micro-electro-mechanical oscillator as a probe to study quantum fluids. This symmetric scheme has many advantages over the asymmetric scheme used previously. In this report, we provide a full description and analysis of the method so that researchers interested can readily implement the method in their experiments involving similar devices.

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Notes

  1. We have achieved driving force more than ten times larger than before, which is currently limited only by the maximum output of our function generator.

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Acknowledgments

This work is supported by NSF through DMR-1205891 (YL).

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Authors and Affiliations

  1. Department of Physics, University of Florida, Gainesville, FL, 32603, USA

    P. Zheng, W. G. Jiang, C. S. Barquist & Y. Lee

  2. Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong

    H. B. Chan

Authors
  1. P. Zheng
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  2. W. G. Jiang
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  3. C. S. Barquist
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  4. Y. Lee
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  5. H. B. Chan
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Correspondence to P. Zheng.

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Zheng, P., Jiang, W.G., Barquist, C.S. et al. Analysis of the “Push–pull” Capacitance Bridge Circuit for Comb-Drive Micro-electro-mechanical Oscillators. J Low Temp Phys 183, 313–319 (2016). https://doi.org/10.1007/s10909-015-1388-5

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  • DOI: https://doi.org/10.1007/s10909-015-1388-5

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