Self-healing, tells that it can repair itself. We all know how often we use concrete for building various buildings, factories, hospitals, etc. This idea would really change the world of architecture. Scientists have developed what they call living concrete by using sand, gel, and bacteria. Of course, this would be environmentally friendly and that is the main thing which we require now in this world. If we can make this possible then we don't need to worry about the small damages that would occur to walls. I believe their work paves the way for future building structures that could “heal their own cracks, suck up dangerous toxins from the air or even glow on command”.
We are already using various types of Smart-watches but now I am going to introduce a very unique and useful product i.e. Sweat powered Smart Watches. These sweat-powered smartwatches are fully charged with 20 microliters of fluid and they also hold all flexes and bends when used. This device works by coating polyester cellulose cloth in a thin layer of a polymer, which acts as the supercapacitor's electrode. Here cloth absorbs sweat, and both +ve and -ve ions in the sweat interact with the polymer's surface, creating an electrochemical reaction that generates energy. It has challenges of making it safe when a broken battery could spill toxic fluids onto the skin. We have been able to do show that human sweat provides the opportunity to produce energy with excellent charging and discharging performance.