In order to establish constitutive equations for a viscoelastic fluid uniform shear flow is usually required. However, in the last 10 years S. Q. Wang and co-workers have demonstrated that some entangled polymers do not flow with the uniform shear rate as usually assumed, but instead choose to separate into fast and slow flowing regions. This phenomenon, known as shear banding, causes flow inst...

This work describes a study on the acoustic streaming phenomenon, for promoting mixing in microfluidic channels. Acoustic microagitation is a solution to overcome the slow molecular diffusion and accelerate chemical reactions, which is essential to the success of microfluidic devices. A preliminary study has been performed on the piezoelectric effect generated by an electroactive polymer and on...

Computationally intense spatial filtering, called beamforming, is central to acoustic imaging. Typically, in order to achieve an update rate similar to slow scan television, beamforming must operate in real-time, which leads to massive parallel processing. This paper surveys appropriate work in the field of synchronous data flow (SDF) as applied to the beamforming problem and defines the object...

In the lithium-ion battery literature, discharges followed by a relaxation to equilibrium are frequently used validate models and their parametrizations. Good agreement with experiment during discharge is possible using pseudo-two-dimensional model such as Doyle-Fuller-Newman (DFN) model. The portion, however, typically not well-reproduced, in experiments occurring much more slowly than models....

The dynamics of complex neural networks must include the aspects of long- and short-term memory. The behavior of the network is characterized by an equation of neural activity as a fast phenomenon and an equation of synaptic modification as a slow part of the neural system. The main idea of this paper is to apply a stability analysis method of fixed points of the combined activity and weight dy...