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:8/30/2015)... England , August 31, 2015 ...   einer Frau   für chirurgische   Behandlung     ... von 7-90   werden für eine   verheerende ... 1200 Frauen behandeln und die Anzahl ausgebildeter Chirurgen in ... Astellas gab heute bekannt, dass  Action on Fistula ...
(Date:8/28/2015)... India , August 28, 2015 ... by Product (Media, Sera, Cryogenic Storage Systems, Thawing Equipment, ... (Therapeutic, Regenerative Medicine, Clinical Trials), End User - Global ... Market is expected to reach USD 3,731.03 Million by ... a CAGR of 11.65% between 2015 and 2020. ...
(Date:8/28/2015)... Pittsburgh, PA (PRWEB) , ... August 28, 2015 ... ... Program Chairman, Chuck Gardner, has organized and will present a session on chemical ... September 2. This conference and exposition is Asia’s largest analytical and scientific instruments ...
(Date:8/28/2015)... (PRWEB) , ... August 28, 2015 , ... ... PhD and orthopedic surgeon, Wade McKenna, DO, announced today that the use of ... Texas, resulted in complete healing of an otherwise non-healing surgical knee wound. , ...
Breaking Biology Technology:Über 550 Frauen, deren Leben durch "Action on Fistula" transformiert wurde 2Über 550 Frauen, deren Leben durch "Action on Fistula" transformiert wurde 3Über 550 Frauen, deren Leben durch "Action on Fistula" transformiert wurde 4Über 550 Frauen, deren Leben durch "Action on Fistula" transformiert wurde 5Biopreservation Market Worth 3,731.03 Million USD by 2020 2Biopreservation Market Worth 3,731.03 Million USD by 2020 3Biopreservation Market Worth 3,731.03 Million USD by 2020 4Biopreservation Market Worth 3,731.03 Million USD by 2020 5U.S. Symposium on Imaging Organized by Pittcon’s Program Chairman Chuck Gardner 2U.S. Symposium on Imaging Organized by Pittcon’s Program Chairman Chuck Gardner 3Dallas-Fort Worth Stem Cell Researchers Use Amniotic Tissue To Successfully Treat Non-Healing Surgical Wound 2Dallas-Fort Worth Stem Cell Researchers Use Amniotic Tissue To Successfully Treat Non-Healing Surgical Wound 3Dallas-Fort Worth Stem Cell Researchers Use Amniotic Tissue To Successfully Treat Non-Healing Surgical Wound 4
... Incorporated (Nasdaq: SPEX ), an innovator in ... and regulatory consulting services to food, supplement, biotechnology and ... the 2009 BIO International Conference in Atlanta, Georgia on ... Control Drug" booth will showcase their ongoing global phase ...
... Biomarkers and Non-Invasive Imaging to Demonstrate Mechanism of Action ... May 14 VIA Pharmaceuticals, Inc. (Nasdaq: ... of compounds for the treatment of cardiovascular and metabolic ... a Phase 2 clinical trial of its lead drug, ...
... manufacturing facility opens with substantially increased capacity, ... Biosystems Inc. (TSX:MBX) announced today robust double digit growth ... for the second quarter ended March 31, 2009. , ... of Microbix said "Our 43% growth in the first ...
Cached Biology Technology:Spherix to Exhibit at the BIO 2009 International Convention 2VIA Pharmaceuticals Announces Complete Enrollment in FDG-PET Phase 2 Study of VIA-2291 in Cardiovascular Patients 2VIA Pharmaceuticals Announces Complete Enrollment in FDG-PET Phase 2 Study of VIA-2291 in Cardiovascular Patients 3VIA Pharmaceuticals Announces Complete Enrollment in FDG-PET Phase 2 Study of VIA-2291 in Cardiovascular Patients 4VIA Pharmaceuticals Announces Complete Enrollment in FDG-PET Phase 2 Study of VIA-2291 in Cardiovascular Patients 5Microbix Sales Grow Over 30% In The Second Quarter; Up 43% In The First Half '09 2Microbix Sales Grow Over 30% In The Second Quarter; Up 43% In The First Half '09 3Microbix Sales Grow Over 30% In The Second Quarter; Up 43% In The First Half '09 4
(Date:8/5/2015)... 2015 Transparency Market Research has ... - Global Industry Analysis, Size, Share, Growth, Trends and ... recognition is forecast to reach US$ 2,671.8 Mn by ... surveillance systems by civil and government agencies. This is ... terrorist activities across the globe that would elevate the ...
(Date:8/3/2015)... SAN JOSE, Calif. , Aug. 3, 2015 /PRNewswire/ ... developer of human interface solutions, today announced that members ... investment community at the Pacific Crest Global Technology Leadership ... Mountain Time. The conference will be held at the ... The presentation may include forward-looking information. ...
(Date:7/31/2015)... , Chine, 31 juillet 2015 ... www.icg-10.org ) sera organisée par le BGI ... Shenzhen en Chine. ... Depuis son inauguration en 2006, l,ICG est devenue ... dans le domaine des « omiques » et c,est aussi ...
Breaking Biology News(10 mins):Facial Recognition Market Expected to Reach US$ 2.67 Bn by 2022, at a CAGR of 9.5% From 2015 - 2022: Transparency Market Research 2Facial Recognition Market Expected to Reach US$ 2.67 Bn by 2022, at a CAGR of 9.5% From 2015 - 2022: Transparency Market Research 3Facial Recognition Market Expected to Reach US$ 2.67 Bn by 2022, at a CAGR of 9.5% From 2015 - 2022: Transparency Market Research 4Facial Recognition Market Expected to Reach US$ 2.67 Bn by 2022, at a CAGR of 9.5% From 2015 - 2022: Transparency Market Research 5Facial Recognition Market Expected to Reach US$ 2.67 Bn by 2022, at a CAGR of 9.5% From 2015 - 2022: Transparency Market Research 6La 10e International Conference on Genomics (ICG-10) doit s'ouvrir en octobre 2La 10e International Conference on Genomics (ICG-10) doit s'ouvrir en octobre 3
... SILVERTHORNE, CO December 11, 2009 Keystone ... announce the appointment of five new Keystone Symposia Fellows ... five talented early-career life scientists (postdoctoral trainees or assistant ... for one year. Fellows are selected based on their ...
... Obese patients who lost a moderate amount of weight by ... a study at Washington University School of Medicine in St. ... the Dec. 15, 2009, issue of the Journal of ... led to improvement in four key measures of heart and ...
... , This release is available in ... richness, due to more plant introductions than extinctions, plant ... The same species are occurring more frequently, whereas rare ... biological communities that are becoming increasingly similar, but also ...
Cached Biology News:Keystone Symposia appoints 5 Fellows as part of diversity in life science initiative 2Keystone Symposia appoints 5 Fellows as part of diversity in life science initiative 3Keystone Symposia appoints 5 Fellows as part of diversity in life science initiative 4Moderate weight loss in obese people improves heart function 2Moderate weight loss in obese people improves heart function 3Europe's flora is becoming impoverished 2Europe's flora is becoming impoverished 3
... Novagens PhageMaker System is optimized for maximum ... ligated with any bacteriophage l vector. Using a ... > 10^7 pfu/g arms (> 4 x 10^8 ... This one-tube system is extremely easy to use; ...
Gridded Cell Culture Petri Dish (20 mm molded in base), tissue-culture treated...
Chicken Anti-Human DNA-directed RNA Polymerase II 7.6 Kd Polypeptide (POLR2L Polyclonal AntibodyOther Sub-Family: not assigned-Other Applications: ELISA, Western Blot...
... Mouse A-20 cells were cultured in RPMI ... the log phase of growth. In order ... cells were fixed in acetone-methanol. The cells ... coated slide, with each wells surface specifically treated ...
Biology Products: