Navigation Links
Pushing the cold frontier in an orderly fashion
Date:9/28/2009

Physicists are continually reaching new lows as they reduce the temperatures of samples in their laboratories. But even nano-kelvins are not low enough to overcome the entropy (a measure of the disorder in a system) that stands between them and the discovery of exotic states of ultra-cold matter. Now physicists at two Italian universities have developed a technique that siphons entropy out of a collection of atoms in much the same way that a kitchen refrigerator removes heat from the food stored inside. The new method is described in Physical Review Letters and highlighted in the September 28 issue of Physics (physics.aps.org).

The system that Jacopo Catani (University of Florence) and colleagues assembled begins with a cloud of potassium and rubidium atoms held in a magnetic trap. They selected a laser with a wavelength of light that interacted with the potassium atoms, but had little effect on the rubidium atoms. They then compressed the potassium atom cloud by focusing the laser to a point in the trap. Compressing a gas usually increases its temperature, but the surrounding rubidium kept things in check, allowing the researchers to hold the temperature roughly constant as entropy was shifted from the potassium to the rubidium atoms.

The novel technique should work with other combinations of atoms as well, offering researchers a new tool to aid them in their pursuit of physics at ultra-low temperatures and entropies.


'/>"/>

Contact: James Riordon
riordon@aps.org
301-209-3238
American Physical Society
Source:Eurekalert  

Page: 1

Related biology technology :

1. DOE awards $377 million in funding for 46 energy frontier research centers
2. Stemline Therapeutics CEO to Present at IBCs New Frontiers in Cancer Drug Development Conference
3. ChanTest Awarded $4.8 Million Through the Ohio Third Frontier Research and Commercialization Program
4. Cordex Pharma Presents New Frontiers in Cardiovascular Medicines on January 29
5. Therapure Biopharma Inc. Announces Manufacturing Agreement with Biomedical Frontiers Incorporated -- Contract will Support Phase II Trials for Thalassemia Treatment
6. The frontiers of nanotechnology
7. SimBioSys Utilizes Revolutionary Hardware Technology to Open New Frontiers in Molecular Modeling
8. Gynecologic Oncologist, With Board Certification in GYN Oncology, OB/GYN, and Surgery Offers Women With Cancer the Newest Treatment Frontier: the Surgical Robot
9. MultiVu Video Feed: Allergan, Inc. Partners With "Project Runway" Designer Kara Saun and Gen Art Fresh Faces In Fashion to Raise Awareness About Excessive Underarm Sweating
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Pushing the cold frontier in an orderly fashion
(Date:8/15/2017)... ... August 15, 2017 , ... Kenall, a ... downlights designed to stay tightly sealed and perform efficiently for years. The downlights ... location listings just aren't enough, such as: hospitals; behavioral health facilities; cleanrooms; containment ...
(Date:8/15/2017)... ... 2017 , ... JULABO USA introduces its new website ... it easy to navigate through the site whether you’re in the office, in ... educational industry content and visit the company’s social media accounts, all on one ...
(Date:8/14/2017)... York, NY (PRWEB) , ... August 14, 2017 , ... ... in Clinical Trials event, which will take place on September 6, 2017 at ... Daniel Karlin, MD , Head of Experimental Medicine, Informatics, and Regulatory Strategy, Pfizer Innovative ...
(Date:8/11/2017)... , ... August 11, 2017 , ... Algenist continues to ... formulation unlocking collagen like never before. , Collagen is the key structural element ... market with Liquid Collagen™, which include: , First to ...
Breaking Biology Technology:
(Date:4/13/2017)... , April 13, 2017 According to a new ... Authentication, Identity Analytics, Identity Administration, and Authorization), Service, Authentication Type, Deployment Mode, ... IAM Market is expected to grow from USD 14.30 Billion in 2017 ... (CAGR) of 17.3%. ... MarketsandMarkets Logo ...
(Date:4/11/2017)... MELBOURNE, Florida , April 11, 2017 ... "Company"), a security technology company, announces the appointment of independent ... John Bendheim to its Board of Directors, furthering the ... ... behalf of NXT-ID, we look forward to their guidance and ...
(Date:4/5/2017)... 4, 2017 KEY FINDINGS The ... at a CAGR of 25.76% during the forecast period ... primary factor for the growth of the stem cell ... MARKET INSIGHTS The global stem cell market ... and geography. The stem cell market of the product ...
Breaking Biology News(10 mins):