THE NATURE OF DRY
How Barrian™ works
Barrian is based on the principles of superhydrophobicity. Naturally occuring superhydrophobic surfaces, such as the extremely water-repellent lotus leaf, exhibit a microstructure of peaks and valleys and an inherently low surface energy. Water droplets remain perched on the peaks in well-formed beads that can’t adhere to the surface. Barrian duplicates this amazing waterproofing action by creating a microstructure of silica glass peaks. This precise surface geometry, combined with advanced low-surface-energy chemistry, results in optimal water beading that accelerates the flow of water over the surface, rendering the surface and the structure below it virtually unwettable.
Superhydrophobicity is defined by a measured water droplet contact angle to a surface of greater than 150°. Superhydrophobic surfaces are extremely difficult to wet because the water beads have very little contact with the surface. When the contact angle of the water droplets exceeds 150° and the angle of the surface is less than 1°, water simply rolls off the surface.