Electromechanical coupling coefficient

Electromechanical coupling coefficient is a numerical measure of the conversion efficiency between electrical and acoustic energy in piezoelectric materials.

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Qualitatively the electromechancial coupling coefficent, k, can be determined as:

Failed to parse (unknown error): \mathcal{\k}^{-2} = frac{1}{energy converted \ input energy}

References

• Medcyclopaedia Definition
• Applied Physics Letters
• Vilnius University, Laboratory of Physical Acoustics