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:11/28/2014)... 28, 2014 The American Association ... University’s School of Nursing with a very prestigious ... program. The 2014 Innovations in Professional Nursing Education ... schools and supports them as they re-envision traditional ... at AACN’s annual meeting in Washington, D.C. to ...
(Date:11/27/2014)... Research and Markets  has announced the ... 2014" report to their offering. ... Acid Industry Report 2014 is a professional and in-depth ... acid industry. The report provides a basic ... industry chain structure. The palmitic acid market analysis is ...
(Date:11/27/2014)... -- Calcivis, a medical devices company ... today announces that it has completed a first ... System. The Calcivis Caries Activity Imaging ... combination designed to transform the assessment and management ... unique, proprietary bioluminescence approach combined with a specialised ...
(Date:11/26/2014)... 26, 2014 The report on the ... segments the concerned market for revenue forecasts and market ... CAGR of 51.9% from 2013 to 2018. At the ... value of $1,415.6 million by 2018. , Browse through ... TOC for information about the market segmentation and in-depth ...
Breaking Biology Technology:American Association of Colleges of Nursing honors Fairfield University’s School of Nursing for Re-envisioning Nursing Education 2Global Palmitic Acid Industry Report 2014 2Calcivis Completes Clinical Study of Novel Caries Activity Imaging System 2Calcivis Completes Clinical Study of Novel Caries Activity Imaging System 3Global Smart Sensor Market in Building Automation is expected to reach a value of $1,415.6 million by 2018 - Report by MicroMarket Monitor 2Global Smart Sensor Market in Building Automation is expected to reach a value of $1,415.6 million by 2018 - Report by MicroMarket Monitor 3Global Smart Sensor Market in Building Automation is expected to reach a value of $1,415.6 million by 2018 - Report by MicroMarket Monitor 4
... VIENNA, Austria, November 28 f-star, an antibody,engineering company ... Modular Antibody Technology, today announced that it,has raised EUR ... of its Series,A financing round, originally co-led by Aescap ... raised in the Series A round,increases to EUR 9.0 ...
... 1-41 has significant ... and anti-amnesic benefits, GENEVA, Nov. 28 /PRNewswire-FirstCall/ - ... announce promising developments with,ANAVEX 1-41, the company,s lead drug ... 1-41 prevented oxidative stress,which damages and destroys cells and ...
... November 28 The results of a,study on ... desensitisation product, which is due to receive German ... VO52.06, which was carried out on 280,patients in ... the main evaluation criterion by,demonstrating a statistically significant ...
Cached Biology Technology:Antibody Engineering Company f-star Raises EUR 3.0 Million in a Second Closing of its Series A Financing Round From Novo A/S 2Antibody Engineering Company f-star Raises EUR 3.0 Million in a Second Closing of its Series A Financing Round From Novo A/S 3Anavex advances drug candidate for treatment of Alzheimer's disease 2Anavex advances drug candidate for treatment of Alzheimer's disease 3Anavex advances drug candidate for treatment of Alzheimer's disease 4Anavex advances drug candidate for treatment of Alzheimer's disease 5STALLERGENES: ORALAIR Grasses: Positive Results of VO52.06 Paediatric Study 2
(Date:11/4/2014)... PA) – Temple University School of Medicine announced ... winner, an initiative funded by the Bill & ... Professor of Obstetrics, Gynecology and Reproductive Sciences; and ... Temple University School of Medicine will pursue an ... "Maternal Blood Biomarkers to Assess Fetal Neurodevelopment.", Grand ...
(Date:11/4/2014)... 4, 2014   ...   Fuel3D , a developer of 3D ... round totaling $6.4 million (£4 million). This funding builds on ... this year and paves the way for the commercial launch ... The funding round was led by Chimera Partners and will ...
(Date:11/3/2014)... Research and Markets has announced the addition of a ... to their offering. This report describes ... started to play an important role in the practice of ... bone marrow transplants. Role of cells in drug discovery is ... of medical practice. Stem cells are discussed in ...
Breaking Biology News(10 mins):Temple University School of Medicine receives Grand Challenges Explorations grant 2Fuel3D Secures $6.4 Million in Expansion Funding 2Fuel3D Secures $6.4 Million in Expansion Funding 3Global Cell Therapy - Technologies, Markets and Companies: 2014 Report 2Global Cell Therapy - Technologies, Markets and Companies: 2014 Report 3
... (March 18, 2009) As any parent knows, children ... University of Washington and the Monell Center indicates that ... and is related to children,s high growth rate. ... sense because when growth is rapid, caloric demands increase. ...
... Mrs. Bruce Reid recorded seeing both a male and ... 1938, Oscar McKinley Bryans observed a ruby-throated hummingbird in ... apple trees were blooming. These are just two of ... on notecards in government files. The cards record more ...
... 2009 Dr. Daniel Von Hoff, Physician-In-Chief of the ... recognizing his achievements in cancer research. Dr. Von ... Clinical Research Services at Scottsdale Healthcare, will be recognized ... special report this month in Arizona Business Magazine. ...
Cached Biology News:Liking sweets makes sense for kids 2It's for the birds 2It's for the birds 3TGen's Dr. Von Hoff wins award for cancer research 2
Human PDGF R beta MAb (Clone # PR7212)...
Zebrafish Ephrin-B2 Biotinylated Affinity Purified PAb...
Collected from 8-12 week old New Zealand or Californian rabbits. Aseptically collected and processed to minimize hemolytic activity. Pricing: $60/unit for 1 - 10 units...
One-step, microplate or cuvet, colorimetric, detection range 0.3 g/dL to 5 g/dL. Procedure: 5 min....
Biology Products: