Resonant Sensors for Complex Liquid Properties and the Monitoring of Phase Transitions
Sprache des Vortragstitels:
International Symposium on Future Materials and Molecules (ISFMM)
Sprache des Tagungstitel:
Complex liquids are encountered in many natural and synthetic processes and are defined by a significant deviation from the idealized case of a simple fluid that can be characterized by a single parameter for the Newtonian viscosity. The observed properties of shear-thinning and pronounced viscoelasticity often origin from an interplay of the microscopic constituents such as polymers, proteins, nanoparticles, ionic species, and often a solvent phase like water. Regularly, classical methods for measuring the viscoelastic properties are limited, e.g., in the accessible frequency range or required sample volume. Resonant sensors provide a solution here. The principle is based on a mechanically oscillating structure in contact with the fluid and a transduction mechanism to measure resonance frequency and damping. In this contribution, the theoretical concept is outlined, implemented devices are explained, and application examples in the domains of medical and material sciences are presented.
Sprache der Kurzfassung:
Hauptvortrag / Eingeladener Vortrag auf einer Tagung