So far in our Guess the Contact Angle Series, we have brought you three videos demonstrating how contact angle changes depending on the state of the material surface:
- Contact angle measurement on a piece of aged, 'as is' aluminum
- Contact angle measurement on aluminum after cleaning it with an IPA wipe
- Contact angle measurement on aluminum after abrasion
Today, we bring you a new video that demonstrates how contact angle changes (surface quality) when we take the same aluminum sample and treat it with atmospheric plasma.
The contact angle featured in this demo is formed by a water droplet deposited using the Surface Analyst 5001 on a piece of aluminum with a smooth surface that has been plasma treated using two different standoff heights: 10mm and 15mm.
Can You Guess the Contact Angle?
The Contact Angle Answer
Have you recorded your guess? Click on the video link below to reveal the answer.
How did you do?
Keep in mind this was primarily a learning exercise, and remember that there is no single “best” value for a contact angle. The ideal water contact angle measurement will depend on your particular process and application.
Adhesion is a critical manufacturing process. The Surface Analyst line of products leverages our deep experience in surface engineering and materials science to validate any surface for cleanliness and guarantee reliable adhesion.
Download our free eBook, “Predictable Adhesion in Manufacturing Through Process Verification,” to see your adhesion process through new eyes. Learn how to predict the future through easy and rapid contact angle measurements.
