What is determined with this method?

• Determination of the advancing and receding angles of liquids in contact with a solid surface
• Measurement of the hysteresis due to different contact angle in the course of wetting (advancing angle) and dewetting (receding angle)

Measuring range:

• Contact angle: 0° - 180° (± 0,1°)
• Drop dosing from 1 µL possible
• Frame rate: up to 52 frames per second

What is evaluated with this method?

• Degree of hysteresis as a measure of the adhesive force between liquid and solid surface
• Homogeneity of a surface: more pronounced hysteresis in the presence of more inhomogeneous surfaces (topographically as well as chemically)

Examples of application of the method by material

• evaluation of the wettability/roughness/surface quality of a coated surface after different treatments

What insights do customers gain about your products/samples with this method?

• The difference between the advancing angle and the receding angle (hysteresis) is a measure of the roughness of a solid surface (e.g. paper coating, plastic surface, etc.).

In which company or process area are these methods applied?

• Company: product development

Which problems can this method solve / recognise at the customer?

• Checking desired/specifically adjusted surface properties