Electromechanical coupling coefficient
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The electromechanical coupling coefficient is a numerical measure of the conversion efficiency between electrical and acoustic energy in piezoelectric materials.
Qualitatively the electromechanical coupling coefficient, k, can be described as:
k − 2 = 1 energy converted per input energy {\displaystyle k^{-2}={\frac {1}{\mbox{ energy converted per input energy}}}}
- . Medcyclopaedia. GE.
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