---
title: "Guess the Contact Angle: Plasma Treated Aluminum"
description: Can you guess how contact angle (surface quality) changes when a piece of aluminum is treated with atmospheric plasma?
---

[News + Science Articles from Brighton Science ](https://www.brighton-science.com/blog)

# [Guess the Contact Angle: Plasma Treated Aluminum](https://www.brighton-science.com/blog/guess-the-contact-angle-plasma-treated-aluminum)

 Written by [Brighton Science](https://www.brighton-science.com/blog/author/brighton-science) | May 5, 2022 10:00:00 AM

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: 

1. Contact angle measurement on a piece of [aged, 'as is' aluminum](https://www.brighton-science.com/blog/guess-the-contact-angle)
2. Contact angle measurement on aluminum after [cleaning it with an IPA wipe](https://www.brighton-science.com/blog/guess-the-contact-angle-ipa-wiped-aluminum)
3. Contact angle measurement on aluminum after [abrasion](https://www.brighton-science.com/blog/guess-the-contact-angle-abraded-aluminum)

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](https://www.brighton-science.com/blog/using-plasma-for-surface-cleaning-and-activation). 

The contact angle featured in this demo is formed by a water droplet deposited using the [Surface Analyst 5001](https://www.brighton-science.com/tools/5001-high-performance-surface-inspection) 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](https://www.brighton-science.com/tools) leverages our deep experience in surface engineering and materials science to validate any surface for cleanliness and guarantee reliable adhesion.

Download our free eBook ["What is Contact Angle? Bridging the Gap: How Contact Angle Insights Drive Manufacturing & Supply Chain Insights" ](https://www.brighton-science.com/what-is-contact-angle)to learn more about contact angle and how your business can utilize this powerful measurement to solve adhesion issues in manufacturing. 

[View full post](https://www.brighton-science.com/blog/guess-the-contact-angle-plasma-treated-aluminum)

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