in this paper, load and buckling mode of a smart column are presented. the theoretical model is a three-layer piezoelectric composite beam that behaves as an axial actuating mechanism. this actuator consists of an elastic core sandwiched between two piezoelectric active outer layers. the piezoelectric layers are polarized transversely, i.e., the polarization vector is parallel to the applied el...

nowadays, atomic force microscope is considered as a useful tool in the determination of intermolecular forces and surface topography with the resolution of nanometers. in this kind of microscope, micro cantilever is considered as the heart of the microscope and is used as a measuring tool.  this paper is aimed towards investigating the behavior of a piezoelectric micro cantilever with a triang...

Autonomous wireless sensor nodes (WSN) for information acquisition and status monitoring, play an important role in the boom area of internet things (IoT) industry 4.0. Self-sustained power supply is pursuit massive practical applications but yet to be developed. Here we propose a novel hybrid piezoelectric generator (PEG) triboelectric nanogenerator (TENG) form self-sustainable WSN. The PEG co...

Abstract The low power and narrow speed range remain bottlenecks that constrain the application of small-scale wind energy harvesting. This paper proposes a simple, low-cost, reliable method to address these critical issues. A galloping harvester with cooperative mode vibration collision (GEH-VC) is presented. pair curved boundaries attached functional materials are introduced, which not only i...

Recently, the nanogenerators which can convert the mechanical energy into electricity by using piezoelectric materials have exhibited great potential in microscale power supply and sensor systems. In this paper, i provide a comprehensive review of the research progress in piezoelectric nanogenerators with different material. The fundamental piezoelectric theory and typical piezoelectric materia...

Two-dimensional materials with ferroelectric properties break the size effect of conventional and unlock unprecedented potentials ferroelectric-related application at small length scales. In this work, using density functional theory (DFT) calculations, we discover a tribo-ferroelectricity behavior in group bilayer group-IV monochalcogenides (MX, M = Ge, Sn X S, Se). Upon interlayer sliding ove...

In this paper, size dependent beam type peizoelectric energy hardvester is investigated. For this goal, first nonlinear formulation of isotropic piezoelectric Euler-Bernoulli nano-beam is developed based on the size-dependent piezoelectricity theory then special beam type piezoelectric energy hardvester is probed for different parameters. Basic nonlinear equations of piezoelectric nano-beam are...

In the present study, the classical plate theory (CPT) was used to study sound radiation of forced vibrating thin circular plates coupled with piezoelectric layers using simply supported and clamped boundary conditions. The novelty of the study consists of an exact closed-form solution that was developed without any use of approximation. Piezoelectric, electrical potential loaded in the transve...

In recent times, the triboelectric and piezoelectric effects have garnered significant attention towards developing advanced material composites for energy harvesting sensory applications. this work, potassium sodium niobate (KNN) based films (EF) been developed to utilize mechanical while simultaneously taking advantage of mechanisms. The KNN particles were synthesized using a wet ball milling...