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wooden transistor

24.05.2023

American electronics experts have unveiled a revolutionary achievement: the world's first wooden electrical transistor. This new development marks a significant step forward in the quest for more sustainable and environmentally friendly technologies.

The transistor, a fundamental building block of modern electronics, is usually made from silicon, a material that is resource-intensive to manufacture and difficult to recycle. And wood is a renewable and rich resource that can be harvested without harming the environment.

The wood transistor was created by a team of scientists at the University of Maryland who used a process called "delignification" to remove a key component of wood known as lignin. What was left was a material called cellulose nanofibrils, which were then coated with a thin layer of gold to create the transistor's electrodes.

The resulting wooden transistor has several advantages of traditional silicon transistors. It is biodegradable, non-toxic and can be manufactured using inexpensive and low energy methods. Also, since wood is a natural insulator, the transistor is less likely to overheat and therefore more energy efficient.

Although the wood transistor is still in its early stages of development, it has the potential to revolutionize the electrical industry. By replacing silicon with a renewable and environmentally friendly material, we can reduce the environmental impact of electronics manufacturing and disposal and create a more sustainable future for everyone.

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To prevent headphone wires from getting tangled 14.02.2008

We all have to be annoyed when ropes, threads, wires or shoelaces are tied by themselves in knots that cannot be untangled.

Biophysicist Dorian Raymer from the University of San Diego (USA) decided to study this mysterious process experimentally. He loaded pieces of twine of various lengths into a cubic box with a side of 30 centimeters and began to rotate it on a centrifuge. Every 10 seconds of rotation, the box was opened and the knots formed were counted. A total of 120 node types were found.

The shortest piece of twine tied in a knot was 46 centimeters long. One and a half meter long strings formed knots in about half of the cases. The longer the segment, the more complex nodes appeared on it after rotation. The longer the box was rotated, the more knots appeared.

So, so that the wire from the headphones of the player or from the headset of the mobile phone does not get tangled in knots in the bag, choose headphones with a shorter wire and do not swing the bag on the go.

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