A beam containing a piezoelectric layer or layers is used for harvesting from various processes. The structure of the made by gluing material on one side (unimorph) both sides (bimorph) carrying substrate. Two layers, glued substrate, may be electrically parallel series connected. This paper presents an experimental analysis impact and connections two Macro Fiber Composite (MFC) MFC patches in ...

1. Abstract A new integrated grasping tool for minimally invasive surgery has been designed consisting of two piezoelectric bimorph actuators. To improve the force and deflection performance of the bimorphs, a segmented design with varying piezoelectric layer thicknesses is proposed, and an optimization procedure developed for sizing the section thicknesses. Design of experiments and response s...

This paper presents the fabrication technology for a novel class of photonic devices. This technology integrates silicon 2-D photonic crystal (PhC) waveguides and electrostatically actuated bimorph cantilevers with tips that are self-aligned relative to the holes of the PhC. The bimorph cantilevers modulate the propagation properties of the slab PhC depending on the proximity of the tips to the...

We have evaluated the ability of three commercially available deformable mirrors to compensate the aberrations of the eye using a model for aberrations developed by Thibos, Bradley and Hong. The mirrors evaluated were a 37 actuator membrane mirror and 19 actuator piezo mirror (OKO Technologies) and a 35 actuator bimorph mirror (AOptix Inc). For each mirror, Zernike polynomials and typical ocula...

This article presents a comparison of hysteresis courses in the motion two-input actuator (bimorph) and single-input (unimorph). The was based on results laboratory numerical experiments, subject which an built three layers: carrier layer from glass-reinforced epoxy laminate two piezoelectric layers Macro Fiber Composite. were glued together, electrodes Composite connected to system that includ...

A metamodel-based approach is developed to optimize the force and displacement performance of a piezoceramic bimorph actuator. A segmented design with a variable piezoceramic layer thickness is proposed, where the thicknesses of discrete piezoceramic segments are used as the design variables. Design of experiments and metamodeling techniques are employed to construct computationally inexpensive...

Smart actuators have many potential applications in various areas, so the development of novel actuation materials, with facile fabricating methods and excellent performances, are still urgent needs. In this work, a novel electromechanical bimorph actuator constituted by a graphene layer and a PVDF layer, is fabricated through a simple yet versatile solution approach. The bimorph actuator can d...

The rapid expansion in the spectrum of two-dimensional (2D) materials has driven the efforts of research on the fabrication of 2D composites and heterostructures. Highly ordered structure of 2D materials provides an excellent platform for controlling the ultimate structure and properties of the composite material with precision. However, limited control over the structure of the adherent materi...

Vibration energy harvesting with piezoelectric materials currently generate up to 300 microwatts per cm2, using it to be mooted as an appropriate method of energy harvesting for powering low-power electronics. One of the important problems in bimorph piezoelectric energy harvesting is the generation of the highest power with the lowest weight. In this paper the effect of the shape and geometry ...

This paper presents a design optimization method based on theoretical analysis and numerical calculations, using a commercial multi-physics solver (e.g., ANSYS and ESI CFD-ACE+), for a 3D continuous model, to analyze the bending characteristics of an electrically heated bimorph microcantilever. The results from the theoretical calculation and numerical analysis are compared with those measured ...