Zurich Scientists Develop Nanoparticle Coating to Defog Surfaces

The new coating consists Nano particles which began to execute a defogging mechanism when in contact with light

Nanotechnology, albeit making some rapid advancements in recent times, has a fictional element attached to it. In a first of its kind discovery, a team of engineers from the Institute of energy Technology in the Eidgenössische Technische Hochschule (ETH), Zurich, have developed a nanoparticle coating that acts as a defogger when it comes in contact with light. This product is projected to have multiple uses such as defogging car windshields, goggles, glasses, and any other surface prone to visibility problems in tough conditions.

Cars these days are already equipped with an electric defogging feature for the windshield and windows, however, such features are only available in high end cars. This new nanoparticle based tech has the capacity to replace the electric defogging technique prevalent right now, at a much cheaper price in the foreseeable future, cutting costs and saving energy. When it comes to glasses, helmets, skiing goggles, and other wearables prone to fogging, there is still no provision for defogging them, other than the erratic spray coating methods. The team at ETH believes their invention is capable of combating these problems.

Structure of the base object is not a worry as the nanoparticles have been devised in the form of a durable coating. There is also no need for an external power source. The coating generates a heating effect when exposed to sunlight or an equivalent light source. Generally, light absorbing surfaces tend to be dark, however, ETH have made their coating completely transparent, causing no obstructions to vision. The research, published in the Nano Letters journal on February 27, 2019, states that the coating is made up of a combination of gold nanoparticles and titanium oxide, and works with four times more efficiency than any anti fog spray currently available. The team is highly optimistic about the commercialization of their product.