The present paper reports a novel manipulation method for droplets using acoustic radiation pressure and acoustic streaming. In an acoustic field, droplets deform, oscillate and move in a wide range of applied frequencies. The behavior of a droplet depends on the droplet size, acoustic field and interfacial tension between the two phases. The acoustic field is controlled by the voltage and freq...

The work reported in this paper addresses the development of soft bodied robots for adaptive interaction with the environment and for increased energy efficiency, thanks to intrinsic body properties and to storage of mechanical energy. Swimming locomotion has been chosen as elective field, because of an active research framework (European research project “Lampetra” [1] on eel-like artefacts) a...

A nonlinear Euler–Bernoulli model of slender piezoelectric beams is employed to investigate parametric resonance motions driven by a pulsating voltage with DC component. The beam based on 3D electric charge conservation and 1D reduction the momentum balance laws assuming as space coordinate arclength along base line coordinate. constitutive relationships for material are specialized according a...

Piezoelectric tube scanners with quartered external electrodes are the most widely used nanopositioning technology in modern scanning probe microscopes. There has been increasing interest in utilizing feedback control techniques to improve bandwidth and accuracy of these nanopositioners. The use of feedback requires a sensor to be incorporated into the nanopositioning device. Noncontact displac...

The objective of this research was to analytically and experimentally study the capabilities of piezoelectric plate actuators for suppressing utter. Piezoelectric materials are characterized by their ability to produce voltage when subjected to a mechanical strain. The converse piezoelectric e ect can be utilized to actuate a structure by applying a voltage. For this investigation, a two-degree...

Abstact Embedding piezoelectric materials as actuators or sensors into structures to form intelligent is a research hotspot. Piezoelectric should not only have good sensing and actuation performance, but also ensure mechanical performance. The influence of forming cutting embeddings macro fiber composites (MFC) on the flexural properties composite curved shell was studied by simulation experime...