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:12/17/2014)... (PRWEB) December 17, 2014 Gene ... that it has entered into a technology access ... (ADM) to apply DNA2.0’s proprietary protein engineering technology, ... process. , “We are extremely excited that the ... platform. This proprietary bioengineering technology has now ...
(Date:12/17/2014)... SOUTH SAN FRANCISCO, Calif. , Dec. 17, ... positive results of a Phase 2 study evaluating ... for the treatment of patients with severe, chronic ... the current standard of care, including topical steroids ... endpoint was percent change in Visual Analog Scale ...
(Date:12/15/2014)...  GlassesOff Inc. (OTCBB: GLSO) announced today the appointment ... director of the Company,s Board of Directors. ... its CEO until its acquisition by Stanley Black ... Recognized as the inventor of the first Wi-Fi-based Active ... -based RFID solutions focused on improving operational efficiency, safety ...
(Date:12/13/2014)... (PRWEB) December 12, 2014 Clarassance, a ... announced its new name: Therabron Therapeutics , Inc. ... and bronchioles (a type of structure in the lungs ... company’s mission to develop novel protein therapeutics for the ... directors decided to change the name to mark the ...
Breaking Biology Technology:ADM and DNA2.0 Enter Into Protein Engineering Technology Access and Service Agreement 2Velocity Pharmaceutical Development, LLC and Tigercat Pharma, Inc. Announce Phase 2 Results for VPD-737 in Patients With Chronic Pruritus 2Velocity Pharmaceutical Development, LLC and Tigercat Pharma, Inc. Announce Phase 2 Results for VPD-737 in Patients With Chronic Pruritus 3Velocity Pharmaceutical Development, LLC and Tigercat Pharma, Inc. Announce Phase 2 Results for VPD-737 in Patients With Chronic Pruritus 4AeroScout Founder Joins GlassesOff's Board of Directors 2AeroScout Founder Joins GlassesOff's Board of Directors 3Maryland-based Biotech Company's Path Forward in Treating Respiratory Diseases Sparks Name Change 2
... Health-focused social networks,blogs, wikis and community sites ... can be their biggest opportunities. A marketing,executive ... increasing,importance of reputation monitoring and management in ... Generated Content and Enhancing its Impact,on Your ...
... EASTON, Mass., Dec. 11 Pressure BioSciences, Inc. (Nasdaq: ... Omni International ("Omni") today announced that they have entered ... Under the terms of the Agreement, the companies will: ... competitive information; (2) co-promote certain products at industry trade ...
... adults may be familiar with the,tetanus and diphtheria booster ... a booster shot that protects adolescents and adults from,whooping ... Listen to this report from ... Registered journalists can access video, audio, text, ...
Cached Biology Technology:Exclusive Conference on Managing Your Online Brand: Shaping the Noise from the Blogosphere 2Pressure BioSciences, Inc. and Omni International Announce Marketing, Distribution, and Technology Development Agreement 2Pressure BioSciences, Inc. and Omni International Announce Marketing, Distribution, and Technology Development Agreement 3Pressure BioSciences, Inc. and Omni International Announce Marketing, Distribution, and Technology Development Agreement 4Pressure BioSciences, Inc. and Omni International Announce Marketing, Distribution, and Technology Development Agreement 5
(Date:12/17/2014)... 2014  Automation is fundamentally transforming the travel ... at international borders. Over the past decade, ePassports, ... veteran travelers to self process through border control ... at an increasing number of airports, seaports, and ... According to Maxine Most , Principal at ...
(Date:12/11/2014)... WINSTON SALEM, N.C. , Dec. 10, 2014  That ... known for quite a while. Hypertension – the medical term ... disease in the early 1800s, and the inflatable cuff that,s ... That doesn,t, however, mean there,s nothing new about hypertension, ... punctured some long-held beliefs about the condition and the best ...
(Date:12/10/2014)... N.C. , Dec. 9, 2014  Wake Forest Baptist ... education building for its School of Medicine. Funding for ... larger capital campaign that will be publicly launched next ... be located in the former 60 series R.J. Reynolds ... Innovation Quarter. Construction will begin immediately with plans to ...
Breaking Biology News(10 mins):Automated Border Control (ABC) Transforms the Global Travel Experience With More Than 2500 ABC eGates and APC Kiosks Deployed In Airports, Seaports, and Land Borders Worldwide 2Research points to need for new approaches to treatment of high blood pressure 2Research points to need for new approaches to treatment of high blood pressure 3Research points to need for new approaches to treatment of high blood pressure 4Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 2Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 3Wake Forest Baptist to Build New Medical Education Facility In Wake Forest Innovation Quarter 4
... children with cerebral palsy is crucial to improve ... in sitting balance between children with cerebral palsy ... balance between children with diplegic and hemiplegic cerebral ... Laboratory of Human Motor Control, Faculty of Health ...
... batteries to flat-screen televisions, rely on materials known as rare ... are reporting development of a new method to recycle them ... in the journal ACS Applied Materials & Interfaces , ... industry. Zhang Lin and colleagues point out that ...
... the change of the seasons. After a winter pause, plants ... a new correlation to light: The colder the winter, the ... can be expected as the climate changes, the spring development ... giving an advantage to shrubs and invasive trees that ...
Cached Biology News:Recycling valuable materials used in TVs, car batteries, cell phones 2Warm winters let trees sleep longer 2
... Microarrays designed for DNA aptamer screening and ... and powerful Paraflo microfluidic on-chip synthesis platform. ... our comprehensive DNA/RNA Aptamer Microarray Service. ... Aptamer Microarray contains greater than 1500 known ...
... Microarrays designed for DNA aptamer screening and ... and powerful Paraflo microfluidic on-chip synthesis platform. ... synthesized on-chip and LC Sciences can provide ... are available as part of our comprehensive ...
... glutathione-S-transferase (GST) is commonly used as a ... coli (1). The GSTTag sequence has been ... some cases the solubility of its fusion ... folded form, GSTTag fusion proteins can be ...
... for the use of small interfering RNA ... the RNA interference (RNAi) pathway have generated ... biology fields. siRNA for experimental use can ... enzymatically, and then transfected into the target ...
Biology Products: