Paint based triboelectric nanogenerator using facile spray deposition towards smart traffic system and security application

Constantly operated systems such as traffic and security systems that continually maintain the operation are continuously consuming tremendous energy as a standby power. The triboelectric nanogenerator (TENG) is a suitable alternative as the sustainable energy source of these systems because the TENG can be utilized as the energy source of these systems by generating the electricity from the wasted energy around the systems. The paint is an attractive material for the TENG because the paint is commonly utilized and the contact frequently occurs on the surface coated by the paint. Herein, the paint based TENG (PBT) is developed with the facile spray deposition to harvest this wasted mechanical energy generated from the paint coated surface due to the contact. The electrical outputs of the PBT are investigated and recorded maximum increased output of 280%. Furthermore, the applicability of the PBT is demonstrated by adopting the various materials for fabrication and the PBT shows great stability. Finally, intrusion detection system (IDS) and camouflaged keypad (CKP) are implemented as applications, respectively. The violation of traffic-norm at the stop line is successfully detected with the IDS, which is indicating the strong possibility for the traffic system. The CKP successfully replaces the keypad of the conventional keyboard with the guaranteeing high personal security during the login process. Considering good compatibility of the PBT, it can be expected to apply in the smart traffic system as well as advanced security system in near future.