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Article

Title: Nanolightning cools chips

Author: Staff Article Type: Product Analysis
Source: R&D Magazine, v46 n5 p61(1) Publication Date: May 2004
  ISSN: 0746-9179
  Illustrations: Charts
URL of Publication: http://www.rdmag.com

At Purdue University, a technology has been developed that provides a liquid rate of cooling while following the concepts of air cooling. Researchers are always developing better cooling technologies, including those that use circulating liquids to extract heat. However, liquid cooling can be complicated and expensive. The microscale ion driven air flow developed at Purdue uses an array of microscale electrodes to produce very small wind currents through formation of nanolightning. Voltage is passed into carbon nanotube-based cathodes, and electrons react with surround air to ionize the air molecules and create a charge imbalance that leads to lightning bolts. As the ion clouds are pumped forward, a cooling current is generated. The process requires only 100V or under to create lightning. Researchers predict that cooling tools based on the technology will have an ion-generation section where electrons are emitted and a pumping area made up of a second set of electrodes that produce a cooling effects. With fast voltage switching, the ion clouds would continuously move forward to create a cooling breeze. The technique can be used wherever air cooling of high-flexible chips is required, particularly in laptops.

Special Features: Charts

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