| Bemerkung |
Vortragender
Prof. Dr. Joseph Páez Chávez (DAAD-Gastprofessur Universität Koblenz-Landau)
Abstract
"Mathematical modeling and experimental study of a self-excited chemo-fluidic oscillator"
This presentation is concerned with the modeling and dynamical study of a self-excited chemo-fluidic oscillator developed at the excellence cluster "Center for Advancing Electronics" (CFAED) at the TU Dresden. This device has the potential ability of coupling chemical, biochemical or biological systems with fluidic systems, which expands the possibilities towards smart processing of chemical information in a microfluidic environment. The main component in the considered chemofluidic oscillator is a microfluidic valve, which consists of a particle of a stimuli-responsive (smart) hydrogel placed in a chamber formed in a microfluidic channel. Due to its volume phase transition behavior, a smart hydrogel has the capacity to change its volume under small variations of special thermodynamic parameters, in a reversible and reproducible manner. In our investigation, the volume of the hydrogel is controlled via the concentration of alcohol at the hydrogel junction, which, as a consequence, opens and closes the microfluidic valve. The modeling of this system is carried out in the framework of piecewise-smooth dynamical systems and its behavior is analyzed via numerical continuation methods. |
