There are so many Smartphones nowadays with water-repellant features. Among the popular handheld devices with this trait are the Sony Xperia Z and the Samsung Galaxy S4 Active. A new Smartphone from Quechua is also reported to have this characteristic.
Recently, The Verge announced a newly-discovered water-repellant technology. We at The Droid Guy believe that this would greatly benefit future Smartphones.
Water-Repellant Surface Destroys Liquid Drops
Currently, the materials being used in water-repellant phones and other devices mimics structures found in nature. The said materials keep themselves dry by making particles of water bounce off from their surfaces. However, a newly discovered structure published in the scientific journal of Nature is found to be capable of destroying water droplets upon impact.
According to the journal, this significantly improves the water-resistance of objects because it shortens the time that fluid makes contact with its surface.
The image below from The Verge shows how the structure destroys a water droplet that hits it:
(Click the image if animation fails to play)
The Composition of the Structure
The said structure makes use of very small or “almost impercievable” little ridges on the surface said The Verge. Each ridge measures approximately 1/250 of an inch or 0.1mm. Together, the ridges causes water droplets to recoil away or scatter into smaller particles.
Kripa Varanasi, the MIT scientist involved in its study, stated that the new structure decreases the amount of time that water spends of an object’s surface by 37 percent as compared to the usual water-repellant materials used today.
The new discovery has many practical applications based on the report. It would allow devices or machines to operate at much lower temperatures because water droplets could be easily broken down and dispersed before they have time to settle and freeze.
Future Smartphones made for adventurers or those who are working in humid or cold locations could greatly take advantage of this feature.