About this event
Interfacial dilatational rheology is a useful tool to investigate the properties of liquid interfaces containing surface active compounds like surfactants, lipids, or polymers.
While similar to the pendant drop measurement for surface/interfacial tension of liquids, an interfacial dilatational rheology measurement monitors surface/interfacial tension under dynamic conditions, specifically while the drop area is changed. This measurement can give valuable insight into the kinetics of surface active compounds as well as the stability of foams and emulsions used in food, cosmetics, and other industries.
In this masterclass we will discuss the pulsating drop, or oscillating drop, method for measuring interfacial dilatational rheology. We will go through properly setting up a measurement using the Attension Theta Flow optical tensiometer combined with the pulsating drop (PD200) module. Then we will show how to extract the viscoelastic parameters from the collected data using OneAttension software.
About the Theta Thursdays Masterclass Series:
Nanoscience Instruments will be hosting a series of Theta Optical Tensiometry demonstration masterclasses. This series will focus on giving pragmatic, hands-on applications of optical tensiometry techniques beyond basic contact angle measurements. While these measurements still have their importance, the Theta Optical tensiometers have many advanced capabilities that may be underutilized. To bridge this gap, each session will focus on a different technique, like tilting or roughness corrected contact angle measurements. This will include helpful tips for the set up and execution of each technique, while avoiding common mistakes for a more successful measurement. We hope this series will inspire current and potential Theta tensiometry users to expand their measurement arsenal and gain the knowledge necessary to apply these techniques confidently.
Session 1: Going Full-Tilt: Dynamic Contact Angle Measurements with a Tilting Cradle
Session 2: Applying Roughness Corrected Contact Angle with the 3D Topography Module
Session 3: It’s a Small World: Contact Angles at the Picoliter Scale
Session 4: Dynamic Contact Angle Measurements with a Tilting Stage
Session 5: Captive Bubble and Interfacial Tension Measurements w/ Hooked Needle
Session 6: Dilatational Interfacial Rheology with the Pulsating Drop Module
Hosted by
Nanoscience Instruments combines expertise in microscopy and surface science instrumentation with real-world solutions. We partner with innovative instrument manufacturers around the world to help scientists and engineers solve complex problems leading to break-through innovations.
