Theses and Dissertations

Date of Award


Document Type


Degree Name

Master of Science (MS)



First Advisor

M. Jasim Uddin

Second Advisor

Karen Lozano

Third Advisor

Javier Macossay-Torres


Mechanical energy is one of the readily accessible green energy sources that could be employed to meet the small-scale energy requirement. In order to capture mechanical energy, power the next generation of electronic gadgets, and health monitoring flexible piezoelectric nanogenerators made of light weight polymers and carbon nanotubes have drawn a lot of attention. Lithium tantalate (LiTaO3), a ferroelectric substance, was prepared here and utilized to create a flexible piezoelectric nanogenerator (FPNG). A compact piezoelectric nanogenerator that successfully transfers mechanical energy into electricity was then created using lightweight polyvinylidene fluoride (PVDF), multi-walled carbon nanotube (MWCNT), and LiTaO3 nanoparticles. To create a piezoelectric composite film, LiTaO3 nanoparticles were first created and loaded into poly vinylidene difluoride (PVDF) and multi-walled carbon nanotubes (MWCNTs). This piezoelectric composite film was then placed between two copper electrodes to create an FPNG. It was thoroughly examined and adjusted how the concentration of LiTaO3 injected into PVDF and MWCNT affected the electrical performance of FPNG. Open-circuit voltage and short-circuit current measurements for the optimum LiTaO3 and MWCNT incorporated F-FPNG were ∼3.4V and ∼181nA respectively (consistent). The flexible piezoelectric nanogenerator (F-PENG) demonstrated its capability to capture various forms of biomechanical energy. Additionally, it displayed encouraging results in self-powered force and biomechanical motion sensing, offering potential for the development of affordable and easily manufacturable sensors for biological applications both in laboratory settings and within living organisms. These sensors could be applied in areas such as monitoring blood flow, respiration, and muscle contractions.


Copyright 2023 Islam Uddin Shipu. All Rights Reserved.

Included in

Chemistry Commons