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Not AvailableThe new trend of materials science and mechanical energy harvesting facilitates the understanding of high performance piezoelectric material systems. In this system is soft, flexible or stretchable formats, with special opportunities for use in bio-integrated applications, from mechanical energy harvesting into sensing devices. This paper reviews the piezoelectric materials and its types of recent developments. It converts mechanical energy into electrical energy for applying small signal like stress, strain, and vibrational movement of human body surface. It can be able to harvest such body-twisted biomechanical and thermal energies by exploiting piezoelectric, triboelectric, and thermoelectric physical property.Not Availabl