Navigation Links
Engineers aim to solve 'burning' computer problem
Date:9/29/2008

If you've balanced a laptop computer on your lap lately, you probably noticed a burning sensation. That's because ever-increasing processing speeds are creating more and more heat, which has to go somewhere in this case, into your lap.

Two researchers at the University of Virginia's School of Engineering and Applied Science aim to lay the scientific groundwork that will solve the problem using nanoelectronics, considered the essential science for powering the next generation of computers.

"Laptops are very hot now, so hot that they are not 'lap' tops anymore," said Avik Ghosh, an assistant professor in the Charles L. Brown Department of Electrical and Computer Engineering. "The prediction is that if we continue at our current pace of miniaturization, these devices will be as hot as the sun in 10 to 20 years."

To head off this problem, Ghosh and Mircea Stan, also a professor in the department, are re-examining nothing less than the Second Law of Thermodynamics. The law states that, left to itself, heat will transfer from a hotter unit to a cooler one in this case between electrical computer components until both have roughly the same temperature, a state called "thermal equilibrium."

The possibility of breaking the law will require Ghosh and Stan to solve a scientifically controversial and theoretical conundrum known as "Maxwell's Demon."

Introduced by Scottish physicist James Clerk Maxwell in 1871, the concept theorizes that the energy flow from hot to cold could be disrupted if there were a way to control the transfer of energy between two units. Maxwell's Demon would allow one component to take the heat while the other worked at a lower temperature.

This could be accomplished only if the degree of natural disorder, or entropy, were reduced. And that's the "demon" in Maxwell's Demon. "Device engineering is typically based on operating near thermal equilibrium," Ghosh said.

But, he added, nature has examples of biological cells that operate outside thermal equilibrium.

"Chlorophyll, for example, can convert photons into energy in highly efficient ways that seem to violate traditional thermodynamic expectations," he said.

A closely related concept, Brownian "ratchets," will also be explored. This concept proposes that devices could be engineered to convert non-equilibrium electrical activity into directed motion, allowing energy to be harvested from a heat source.

If computers could be made with components that operate outside thermal equilibrium, it could mean better computer performance. Basically, your laptop wouldn't burst into flames as it processes larger amounts of information at faster speeds. Also, because it would operate at extremely low power levels and would have the ability to harness, or scavenge, power dissipated by other functions, battery life would increase.

Combining Ghosh's command of physics with Stan's expertise in electrical engineering, the two hope to bridge the concept of tackling Maxwell's Demon and Brownian ratchets from theoretical physics to engineered technologies.

"These theories have been looked at from a physics perspective for years, but not from the perspective of electrical engineering," Stan said. "So that's where we are trying to break some ground."


'/>"/>

Contact: Fariss Samarrai
fls4f@virginia.edu
434-924-3778
University of Virginia
Source:Eurekalert

Related biology technology :

1. Penn engineers design computer memory in nanoscale form that retrieves data 1,000 times faster
2. Penn engineers design computer memory in nanoscale form that retrieves data 1,000 times faster
3. Harvard University engineers demonstrate quantum cascade laser nanoantenna
4. Cardiff University engineers give industry a moths eye view
5. Surface dislocation nucleation: Strength is but skin deep at the nanoscale, Penn engineers discover
6. Engineers make first active matrix display using nanowires
7. Engineers harness cell phone technology for use in medical imaging
8. Nanowires may boost solar cell efficiency, UC San Diego engineers say
9. Engineers demonstrate first room-temperature semiconductor source of coherent Terahertz radiation
10. Engineers whip up the first long-lived nanoscale bubbles
11. University of Pennsylvania engineers reveal what makes diamonds slippery at the nanoscale
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/9/2016)... SC (PRWEB) , ... February 09, 2016 , ... The ... in the organization’s history, it is offering its 2016 AAT Member Certification Qualification Course ... , The curriculum for the webinar, which will include a detailed review of hardware, ...
(Date:2/9/2016)... , Feb. 9, 2016  DNAtrix, a ... for cancer, announced that its lead product, ... Commission as an orphan medicinal product for ... form of glioma, strikes approximately 25,000 people ... http://photos.prnewswire.com/prnh/20160208/330986LOGO --> ...
(Date:2/9/2016)... , February 9, 2016 Three-Year ... Enables Children to Take Part in Life-Changing Camp ... new initiative designed to positively affect the lives of children born ... care. --> SHPG ) is announcing a new initiative ... diseases, as well as the future of rare disease care. ...
(Date:2/8/2016)... , Feb. 8, 2016 /PRNewswire/ - BIOREM Inc. (TSXV: ... the top ten finalists for clean technology companies in the ... the top 10 companies listed on the TSX Venture Exchange, ... & gas, clean technology & life sciences, diversified ... equal weighting given to return on investment, market cap growth, ...
Breaking Biology Technology:
(Date:2/2/2016)... , Feb. 2, 2016  Based on ... Frost & Sullivan recognizes US-based Intelligent Retinal Imaging ... & Sullivan Award for New Product Innovation. IRIS, ... North America , is poised ... rapidly growing diabetic retinopathy market. The IRIS technology ...
(Date:2/1/2016)... , Feb. 1, 2016  Wocket® smart wallet ( www.wocketwallet.com ) ... television personality, Joey Fatone . Las Vegas ... fans. --> Las Vegas , where Joey ... --> The new video ad was filmed at the Consumer Electronics ... at the Wocket booth to meet and greet fans. ...
(Date:1/25/2016)... 2016   Unisys Corporation (NYSE: UIS ) today ... (JFK) International Airport, New York City , to ... attempting to enter the United States using ... pilot testing of the system at Dulles last year. ... JFK during January 2016. --> pilot testing of ...
Breaking Biology News(10 mins):