October 5, 2022

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The world's smallest battery is smaller than salt crystals

The world’s smallest battery is smaller than salt crystals

Electronic devices are getting smaller and smaller, computers used to occupy entire rooms, and today we have these devices on hand in the form of smartphones, and the fascination zoom out just advancing.

Just look at devices of this type smart dust (smart dust), that is, small, often invisible, and equipped with cameras or a number of sensors capable of monitoring the temperature of the environment (including our body from the inside), chemicals and many other factors. And there is only one problem, and that is that its development is severely hampered by the lack of suitable batteries.

Or at least it was, because scientists at Chemnitz University of Technology just announced that they had set a new record for miniature batteries. The solution is Smaller than a salt crystal Interestingly, it is inspired by… Sponge cake folding techniquethat is, a thin layer of dough greased with cream or jam, and then rolled into a distinctive roll.

The biscuit-roll-inspired self-regulating process, as the authors call this technique, consists of rendering silicon wafer Layers of current collectors, electrodes made of polymers, electrical insulators and other necessary elements, and then rolled up in exactly the same way as a popular cake.

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As a result, we get a rechargeable device that takes up little space and can run the world’s smallest computer system for about 10 hours without interruption, for example to constantly measure the ambient temperature. We remind you that the meter is the smallest computer system in the world 0.3 mm onlyPresented by the University of Michigan in 2018.

According to the researchers, their solution has great potential and can be used in hardware The Internet of thingsminiature medical implants (such as devices that constantly track the level of oxygen in deep tissues or monitor recovery after surgery), microrobotic systems and Ultra-flexible electronics.