Liquid Repellent Surfaces

 


A new study was recently published in Advanced Materials Interfaces. Scientists at Griffith University Have made consequential movement towards understanding liquid interactions. This breakthrough will impact self cleaning materials and even medical devices.

Griffiths Queensland Micro and Nanotechnology Center Are studying re-entrant Microstructures. These are tiny structures on the surface of particles that can repel water and other liquids.

The paper was editor’s choice and is set to run on the journal cover. It discusses how shape, material, and spacing of these microstructures affect their ability to resist wetting or spreading liquid.

Dr. Navi’s Kashaninejad is the study’s lead researcher. He reports, “ Our research dives deep into why some surfaces are better at repelling water than others. This understanding allows us to design surfaces that can either repel or attract liquids, which is important for applications like self cleaning materials or surfaces that avoid fouling.”

The team used silicon dioxide and silicon carbide. Silicon carbide is known for its water repellent characteristics. Researchers discovered that the shape and space of the structures played a large role in influencing liquid behavior.

The team discovered re-entrant Structures in Silicon carbide. These have larger gaps that Have trapped air pockets which enhances water repellent properties. The balance between material properties and structures gives a new perspective on designing liquid repelling services.

Dr. Kashaninejad summarizes, “ An environmental technology, self cleaning Surfaces could reduce maintenance cost and improve performance in sectors such as solar panel and water repellent coatings. In the biomedical field, liquid repellent materials could help develop medical devices that resist bacterial buildup  improving hygiene and patient safety. These findings also open doors to creating material that can withstand extreme conditions, such as high temps or harsh chemicals, using materials like silicone carbide. The study not only contributes to the growing body of knowledge and surface science, but also positions Griffith university at the forefront of innovative materials design” 

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