Dirt-Proof Paint

A self-cleaning paint has been developed that mimics the complex leaf structure of the lotus plant to minimize adhesion of dirt particles and microbes. Made with titanium oxide and silica, the paint acts as a photocatalyst when exposed to ultraviolet light; breaking down air pollutants (e.g. gas emissions, oils and organic molecules) that may collect on its surface and inhibiting discoloration. Because it’s also hydrophobic, water droplets flow off the surface without being absorbed into the paint, taking dirt and dust particles with it.

The environmentally-friendly coating differs from other similar types of paint mainly because the use of locally-source additives makes it much more affordable. By reducing the need for frequent washing, the associated water usage and the surface damage to building exteriors caused by detergents and high pressure washers, it’s expected to cut down significantly on building maintenance costs. A version for automotive use is also in the works.