 The eight-node solid-shell finite element models have been developed for the analysis of laminated composite pate/shell structures with piezoelectric actuators and sensors. To resolve the locking problems of the solid-shell elements in laminated materials and improve accuracy, the assumed natural strain method and hybrid stress method are employed. The nonlinear electric potential distributio...

Ferroelectric PbTiO3 nanostructures have been fabricated using two different procedures that involve microemulsions and Chemical Solution Deposition onto Pt/TiO2/SiO2/(100)Si substrates. The first procedure enables the fabrication of structures with controlled size and shape, as observed by Atomic Force Microscopy (AFM) topography and computer assisted quantitative analysis, while the second pr...

Film bulk acoustic resonators (FBAR) are promising candidates to replace surface acoustic wave devices as filters or delay lines, but also offer exciting opportunities as biological or gas sensors. In this work, solidly mounted FBARs were manufactured by substituting commonly used pure aluminium nitride (AlN) by scandium doped aluminium nitride (ScAlN) thin films as the piezoelectric layer. The...

9 The co-integration of piezoelectric actuation and sensing capabilities on 10 microelectromechanical system-based resonators can be a source of electrical cross-talk that, if not 11 properly taken into account, may dramatically affect the interpretation of the device’s output. In this 12 paper, we identify three parasitic electrical effects pertaining to the most commonly used piezoelectric 13...

The symmetry properties of atomically thin boron nitride (BN) monolayers endow them with piezoelectric properties, whereas the bulk parent crystal of stacked BN layers is not piezoelectric. This suggests potential for unusual electromechanical properties in the few layer regime. In this work, we explore this regime and discover that a bilayer consisting of two BN monolayers exhibits a strong me...

An innovative actuation principle is introduced in this paper to drive a rotary motor using an anisotropic piezoelectric composite laminate. The driving element is a three layer laminated beam with piezoceramics sandwiched between two anti-symmetric composite laminae. By taking advantage of material anisotropy, torsional motion can be induced from in-plane strain actuation. With such structural...

This paper studies dynamic stability of homogeneous beams with piezoelectric layers subjected to periodic axial compressive load that is simply supported at both ends lies on a continuous elastic foundation. The displacement field of beam is assumed based on Bernoulli-Euler beam theory. Applying the Hamilton's principle, the governing dynamic equation is established. The influences of applied v...

This paper presents an analytical model for investigating the effect of debonding between piezoelectric actuators/sensors and the host beam on the sensing and actuating behaviour. In this model, both flexural and longitudinal displacements of the host beam and the piezoelectric layers are considered using classical beam theory. For the adhesive layer, only through-thickness peel strain and tran...

The output of a piezoelectric nanogenerator based on ZnO nanowire is largely affected by the shape of nanowire. In order to obtain mechanically stable nanogenerator with high performance, the investigation of mechanical and electrical characteristics related to the nanowires and materials used in nanogenerators are of great interest and significance. This paper presents the various behavior of ...

Self-sensing techniques for atomic force microscope (AFM) cantilevers have several advantageous characteristics compared to the optical beam deflection method. The possibility of down scaling, parallelization of cantilever arrays and the absence of optical interference associated imaging artifacts have led to an increased research interest in these methods. However, for multifrequency AFM, the ...