**Acknowledgements**

This work is supported by the Start-up Research Grant (SRG2016-00092- IAPME), Multi-Year Research Grant (MYRG2018-00079-IAPME) of University of Macau, Science and Technology Development Fund (081/2017/A2), (0059/2018/ A2), (009/2017/AMJ), Macao SAR (FDCT).

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**Author details**

Taipa, Macau

Dan Liu and Guo Hong\*

provided the original work is properly cited.

\*Address all correspondence to: ghong@um.edu.mo

*Wearable Electromechanical Sensors and Its Applications DOI: http://dx.doi.org/10.5772/intechopen.85098*

© 2019 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium,

Institute of Applied Physics and Materials Engineering, University of Macau,
