Navigation Links
A quantum dot energy harvester
Date:2/14/2013

A new type of nanoscale engine has been proposed that would use quantum dots to generate electricity from waste heat, potentially making microcircuits more efficient.

"The system is really a simple one, which exploits certain properties of quantum dots to harvest heat," Professor Andrew Jordan of the University of Rochester said. "Despite this simplicity, the power it could generate is still larger than any other nanoengine that has been considered until now." The engines would be microscopic in size, and have no moving parts. Each would only produce a tiny amount of power a millionth or less of what a light bulb uses. But by combining millions of the engines in a layered structure, Jordan says a device that was a square inch in area could produce about a watt of power for every one degree difference in temperature. Enough of them could make a notable difference in the energy consumption of a computer.

A paper describing the new work is being published in Physical Review B by Jordan, a theoretical physics professor, and his collaborators, Bjrn Sothmann and Markus Buttiker from the University of Geneva, and Rafael Snchez from the Material Sciences Institute in Madrid. Jordan explained that each of the proposed nanoengines is based on two adjacent quantum dots, with current flowing through one and then the other. Quantum dots are manufactured systems that due to their small size act as quantum mechanical objects, or artificial atoms.

The path the electrons have to take across both quantum dots can be adjusted to have an uphill slope. To make it up this (electrical) hill, electrons need energy. They take the energy from the middle of the region, which is kept hot, and use this energy to come out the other side, higher up the hill. This removes heat from where it is being generated and converts it into electrical power with a high efficiency.

To do this, the system makes use of a quantum mechanical effect called resonant tunneling, which
'/>"/>

Contact: Leonor Sierra
lsierra@ur.rochester.edu
University of Rochester
Source:Eurekalert

Page: 1 2

Related biology technology :

1. In new quantum-dot LED design, researchers turn troublesome molecules to their advantage
2. Pitt discoveries in quantum physics could change face of technology
3. Michael Cusumano, MITs Sloan Distinguished Professor of Management, Joins Quantum Leap Innovations Board of Directors
4. Quantum computing has applications in magnetic imaging, say Pitt researchers
5. Smaller and more powerful electronics requires the understanding of quantum jamming physics
6. Graphene quantum dots: The next big small thing
7. A new class of electron interactions in quantum systems
8. Single molecules in a quantum movie
9. Quantum control protocols could lead to more accurate, larger scale quantum computations
10. Quantum computer built inside a diamond
11. Raising the prospects for quantum levitation
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/25/2014)... The Conferee Networking committee is pleased to announce ... two-hour sessions provide a unique networking opportunity for attendees ... new techniques, or brainstorm new ideas in an informal ... consideration is August 31, 2014, and instructions can be ... will review the topics, and status notifications will be ...
(Date:7/25/2014)... At the request of the AMA, the Federal ... the public comment period (Docket No. FAA-2014-0396) for FAA’s ... by Congress as part of the FAA Modernization and ... new deadline for comments as September 23, 2014. , ... in the Federal Register on July 25, 2014, the ...
(Date:7/24/2014)... 24, 2014 Gain recognition for ... Chain of the biotech industry. Nominations are now ... brought to you by the Bio Supply ... supply chain management professionals for the past 7 ... of the Biotech industry – Manufacturers, Service Providers, ...
(Date:7/24/2014)... forces worldwide rely on sophisticated equipment, trained personnel, ... public areas against terrorist attacks. A revolutionary new ... to make their job much easier. , The ... of Tel Aviv University ,s School of Chemistry ... by the Herzliya company Tracense, picks up the ...
Breaking Biology Technology:Pittcon 2015 Announces Call for Topics for Conferee Networking Sessions 2FAA Grants Comment Extension at the Request of AMA 2Call for Submission: BSMA’s Supply Chain Management Innovation Awards 2Call for Submission: BSMA’s Supply Chain Management Innovation Awards 3Nano-sized chip 'sniffs out' explosives far better than trained dogs 2
... 4, 2011 SynCo Bio Partners B.V., one ... that its aseptic filling facility is again fully operational and ... for its clients after the expansion of its Class A ... zone is an important milestone in SynCo,s strategy in supporting ...
... Gram for gram, novel carbon nanofiber-filled coatings devised by ... (NIST) and Texas A&M University outperformed conventional flame retardants ... mattresses by at least 160 percent and perhaps by ... results, reported in the journal Polymer ,* suggest ...
... Samadi, Vice Chairman, Department of Urology, and Chief of ... Medical Center, welcomed 130 academically outstanding high school students ... National Youth Leadership Forum on Medicine (NYLF/MED) ... residential program for exceptional high school students in the ...
Cached Biology Technology:SynCo Bio Partners Expands the Class A Zone in its Aseptic Filling Facility 2Novel coatings show great promise as flame retardants in polyurethane foam 2Live Robotic Prostate Surgery Performed for Nation's Youth 2Live Robotic Prostate Surgery Performed for Nation's Youth 3
(Date:7/25/2014)... A study published online in the International ... novel approach to preventing cervical cancer based on findings ... after removal of a discrete population of cells in ... study that looked at squamocolumnar junction cells, or SCJ ... have been implicated as the origins of cervical cancer. ...
(Date:7/25/2014)... professor of biomedical engineering at the University of ... engineering and artificial organ development., "Introduction to Tissue ... to entering into the field of artificial organ ... biomedical engineering at UH, served as a series ... there are other published books on the subject ...
(Date:7/25/2014)... Adelaide has opened the way for the development of new ... Australia, annual barley production is second only to wheat with ... the most important diseases of barley. , Senior Research Scientist ... special growths on the cell walls of barley plants that ... The research, by the ARC Centre of Excellence in Plant ...
Breaking Biology News(10 mins):Clearing cells to prevent cervical cancer 2University of Houston researcher publishes textbook on tissue engineering 2New hope for powdery mildew resistant barley 2
... of Technology researcher has developed a new technique ... cheaply diagnose the bacteria which causes the most ... Erin Price, from QUT,s Faculty of Science, has ... genetic markers to pinpoint the bacteria Campylobacter jejuni. ...
... CHARLOTTESVILLE, Va., Oct. 1, 2007 -- Its well known that ... skin problems, ranging from skin cancer to sunburns and premature ... and an unhealthy sign that your skin is damaged. ... exactly how UV rays specifically interact with your DNA and ...
... Louis are finding common ground between the shaping of ... Larry A.Taber, Ph.D., the Dennis and Barbara Kessler ... Professor of Mechanical Engineering, are examining mechanical and developmental ... surface, or cortex, which gives the higher mammalian brain ...
Cached Biology News:Fighting the spread of food poisoning 2UVA researchers explain cell response to skin-damaging UV rays 2Engineers study brain folding in higher mammals 2Engineers study brain folding in higher mammals 3
MitoScreen (JC-1) Kit , 100 tests Consult technical datasheet for details....
Large-fragment, single-stranded carrier DNA of the highest quality, perfectly suited for all types of yeast transformation....
... , Customer Peptide Synthesis , 20 Amino Acid length ... 20 mg will return to customer for future usage conjugation ... , Maintenance 102 days/each , ... x5 /each , Test bleed (app. 5 ml) ...
Request Info...
Biology Products: