Piezoelectric materials and transducers can be designed to handle a wide range of input frequencies and forces allowing for energy harvesting to occur during vibration energy harvesting piezoelectric materials convert mechanical strain into an electrical charge or voltage via the direct piezoelectric effect the power output of a particular . Piezoelectric materials are divided into four categories based on their structure characteristics ceramics single crystals polymers and composites the composite material is a combination of piezoelectric ceramics or single crystals with polymers most piezoelectric ceramics and single crystals used to date for energy harvesting are a subgroup of piezoelectrics called ferroelectrics. This technical paper focuses on such advanced methods of energy harvesting using piezoelectric material photovoltaic cells human generated power and virus based . Focusses on one such advanced method of energy harvesting using piezoelectric material piezoelectric materials can be used as mechanisms to transfer mechanical energy usually ambient vibration into electrical energy that can be stored and used to power other devices a piezoelectric substance is one that produces an electric charge. Paradiso et al suggested energy harvesting using piezoelectric shoes which are made from the piezoelectric composite material using the unimorph strip they discovered utilizing wasted energy using flexible piezoelectric materials and simple mechanic structures and also used for designing comfortable piezoelectric shoes
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