Researchers develop self-cleaning surface to repel bacteria

Researchers from McMaster University in Hamilton, Ontario, recently developed a self-cleaning, plastic surface that repels bacteria.

The goal is to prevent the transfer of dangerous bacteria and antibiotic-resistant superbugs.

The surface is a treated form of conventional transparent wrap that can be shrink-wrapped onto surfaces that usually are high in bacteria. It works by using a combination of chemistry and nano-scale surface engineering.

It is textured with microscopic wrinkles that allow anything that hits the surface to bounce off.

The surface was inspired by the water-repellent lotus leaf and was treated with chemicals to enhance its repellent properties.

“We can see this technology being used in all kinds of institutional and domestic settings,” Tohid Didar, an engineer who co-led the research, said. “As the world confronts the crisis of anti-microbial resistance, we hope it will become an important part of the anti-bacterial toolbox.”

Researchers believe the surface could stop the accidental transfer of food-borne bacteria and is the ideal material for food packaging.

The surface was tested for MRSA and Pseudomonas, two forms of antibiotic-resistant bacteria. Electron microscope images showed nearly no bacteria.

The surface is inexpensive, flexible, and durable. Researchers hope to find a commercial partner to develop commercial applications for the product.