NC State Unveils Ultra-Stretchable, Eco-Friendly Superomniphobic Materials
Researchers at North Carolina State University have achieved a significant breakthrough, developing ultra-stretchable, superomniphobic materials using an innovative laser ablation technique. This method eliminates the need for harsh chemical solvents, marking a more environmentally friendly approach.
These groundbreaking materials maintain their liquid-repellent properties when stretched up to five times their original length and through over 5,000 stretch cycles.
Potential applications for this new class of materials are diverse, including soft robotics and artificial skin patches.
Understanding Superomniphobic Materials
Superomniphobic materials are engineered to repel a wide array of liquids, from acids and bases to various solvents. Traditionally, the creation of these highly repellent surfaces has relied on spray coatings. However, a major challenge with these conventional methods is that such coatings can easily delaminate when the underlying material undergoes significant stretching.
Overcoming Delamination with Laser Ablation
Previous work by the research team tackled the issue of delamination by introducing microprotrusions on material surfaces. This structural design allowed the protective coating on top of these pillars to remain intact even during stretching.
In their current research, the team advanced this concept significantly. Laser ablation was strategically employed to create both the necessary microprotrusions and the rough surface architecture crucial for achieving superomniphobicity. This direct laser-based method is a key innovation.
Streamlining Development with Machine Learning
To optimize the material development process, the researchers incorporated a machine-learning framework. This framework was instrumental in identifying the ideal laser parameters, including power, speed, and spatial frequency, thereby streamlining the entire development timeline.
The team specifically tested this novel method on a fluorocarbon silane-modified siloxane elastomer, a material chosen for its inherent stretchability and compatibility with the new technique.
An Environmentally Friendly and Cost-Effective Innovation
This new method offers a more environmentally friendly and cost-effective approach to producing highly stretchable superomniphobic materials. Beyond its environmental benefits, the process also boasts economic advantages. These advanced materials hold promise for a wide range of applications, from medical textile dressings to robust stretchable electronics designed to operate reliably in challenging chemical environments.