Created fan with no moving parts


19/03/2008

The culmination of six years of research and finding the best solutions for electronics cooling was silent fan the size of a microchip that has no moving parts, but blowing hard enough to cool the laptop.

Taking the physical effects used in the silent household air purifiers, engineers have created a tiny device called RSD5, which may well be used as a silent, ultra-thin, economical and easy-mounted cooling system for laptops and other electronic devices.

For its size the new compact solid-state RSD5 is by far the most powerful and energy efficient fan: air flow rate is three times higher than the typical small mechanical fan and the size RSD5 four times less mechanical cooler.

RSD5 consists of a set of conductors through which current flows, and generates a micro-plasma (ionised gas, wherein there are free electrons, electrically conductive). Among the resulting strong electric field, the ions push neutral air molecules, creating wind. This phenomenon is called "ionic wind".

Due to the special contoured surface of the plates, which are conductors, the researchers were able to control microscale electric shocks to get maximum airflow without risk of sparks or arcing. As a result, the new device is blowing steadily at a speed of 2.4 meters per second (compared to the larger mechanical ventilators - from 0.7 to 1.7 m / sec).

This is enough power to cool a 25-watt chip with the size of the fan less than 1 cm Scientists hope that one day they will be able to reduce their solid fan with no moving parts to such a size that it can be integrated directly into the chip, thus producing a self-cooling microchips.

The developers of a new solid-state mikroventilyatora Shlitz Dan (Dan Schlitz) and Vishal Singhal (Vishal Singhal) of Thorrn Micro Technologies presented the invention at the 24th Annual Symposium "Semi-Therm" in San Jose (California, USA), March 17, 2008. Most popular news informers tell the main news of the day.

Original: Eurekalert.org


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