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Pristine Polymer-Based Piezoelectric Nanogenerators: Energy Harvesters and Self-Powered Systems

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The recent advancements in polymer-based piezoelectric nanogenerators have generated tremendous hope to address the power issues of electronic devices by utilizing self-powering mechanisms of these nanogenerators. The self-powering mechanism is inherently dependent upon the mechanical energy harvesting capability of piezoelectric polymers, and thus these nanogenerators are becoming very important for flexible electronics that are finding potential use cases in wearable devices and biomedical implants. A series of polymers such as polyvinylidene fluoride, cellulose, nylon-11, poly l-lactic acid and electroactive polymeric films have shown piezoelectric properties as well as mechanical energy harvesting capability. Other approaches such as incorporation of inorganic piezoelectric fillers in pristine polymers have significantly enhanced the capability of harvesting the mechanical energy. Furthermore, the strategies of enhancing the amount of polar phase in the piezoelectric pristine polymers improve the sensing ability of these polymers and hence they can be utilized for the development of self-powered sensors. The present review covers the recent developments in piezoelectric polymer-based energy harvesters and discusses the potential of polymers in the field of self-powered devices.

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The authors acknowledge the financial support from the following research grants: Department of Science and Technology (DST)—IMP/2019-000237, Indian Space Research Organization (ISRO)—ISRO/STC/IITB/2019-20 and Science and Engineering Research Board (SERB) under DST, Government of India—SPF/2021/000021. The authors are thankful to Mr. Ravinder K. Reddy, Mr. Sunil D. Suresh and Mr. Prashanth Kannan, Department of Metallurgical Engineering and Materials Science, IIT Bombay, Powai for their valuable suggestions.

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Correspondence to Dipti Gupta.

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Khurana, V., Gupta, D. Pristine Polymer-Based Piezoelectric Nanogenerators: Energy Harvesters and Self-Powered Systems. Trans Indian Natl. Acad. Eng. 7, 115–145 (2022).

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