Executive Summary : | The rapid advancement of science and technology has led to an improved human life due to the evolvement of wearable electronics systems such as real-time sleep monitoring devices which require more and more new solutions. In this direction, a novel class of technology called triboelectric nanogenerators (TENGs) is based on frictional electrification and electrostatic induction coupling, induction have a number of benefits, including being lightweight, adjustability, affordable, and having a variety of material options and hence can be utilized for energy harvesting, high-voltage sources, and self-powered sensors. Many research efforts have been devoted towards single electrode mode TENG sensor because of its basic form, low cost, variety of materials, and self-powered properties. In this project, we aim to fabricate and synthesize a smart TENG device of the order of 1.5cm x 1.5cm dimensions based on single-electrode mode using porous PDMS-PTFE thin films. The synthesized TENG consists of two parts: lower part and upper part with air as a spacer. The synthesized lower part of the proposed TENG consists of four layers namely (a) Glass/ITO/FTO, (b) copper (Cu), and (c) Graphene (d) Porous PDMS with different concentration of PTFE polymer (1%, 5%, 10%, 15%, 20%, 25%, and 30%) which acts as a highly electronegative layer whereas the upper part of the synthesized TENG consists of transparent and flexible Polymethyl methacrylate (PMMA) polymer. Two important elements which can improve the output performance and mechanical stability of the flexible TENG are suitable materials and optimized structures. Polymer PMMA is used for the enhancement of output performance of TENG due to its excellent properties and according to the triboelectric series, which empirically ranks materials according to their tribo-positive or tribo-negative tendencies, the PMMA has been used in triboelectric devices as a tribo-positive material. Finally, by using air as spacer, the upper and the lower parts of TENG are joined for pressing and releasing, so that the potential difference is developed across two parts which further produce an energy in the form of AC voltage and current. Comparative study and analysis of different PDMS-PTFE samples can be done using different characterization techniques such as FESEM(field emission scanning electron microscopy), AFM (atomic force microscopy), Raman Spectroscopy, UV-Vis-spectroscopy, EDS (energy dispersive spectroscopy), open-circuit voltage (VOC), short-circuit current (ISC) and XRD (x-ray diffraction) of the deposited layers. The proposed device would be used in various devices like smart pillow, sitting posture real time monitoring etc. |