Navigation Links
Scientists observe quantum vortices in cold helium droplets
Date:8/21/2014

etectors that can even register individual photons and can determine their energy very precisely," stresses Benjamin Erk of CFEL. "The detectors create a series of 120 images per second while doing so."

"The analyses of the images shows that a surprising number of drops were not spherical as expected, but were pulled length-wise by rapid rotation," says Rolles. "In fact, some drops possessed more of a shape resembling a thick wheel with two almost parallel sides." The rotation stems from the expansion of the liquid helium inside the nozzle, through which they enter the experimental chamber. The droplets rotated up to fourteen million times per second far faster than a normal round drop could withstand according to the laws of classical physics.

Due to the rapid rotation, tiny "quantum vortices" formed within the nanodroplets, reminiscent of a miniature whirlpool swirling around a bathtub drain. This phenomenon had already been observed in larger units of superfluid helium, but has just now been detected in nanodroplets for the first time. As observed earlier, the vortices form a regular lattice. "In nanodroplets, the quantum vortices are surprisingly 100,000 times more densely packed than in the larger samples of superfluid helium that were previously studied," says Vilesov.

"What we have observed in this experiment is really surprising," stresses co-lead Christopher Bostedt of SLAC. The experiment's third co-lead, Oliver Gessner from the Lawrence Berkeley National Laboratory, adds: "Now that we have shown that we can detect and characterize quantum rotation in helium nanodroplets, it will be important to understand its origin and, ultimately, to try and control it."


'/>"/>

Contact: Thomas Zoufal
presse@desy.de
49-408-998-1666
Deutsches Elektronen-Synchrotron DESY
Source:Eurekalert

Page: 1 2

Related biology technology :

1. Scientists defuse the Vietnam time bomb
2. Singapore scientists lead human embryonic stem cell study
3. Sheffield scientists shine a light on the detection of bacterial infection
4. Nanowiggles: Scientists discover graphene nanomaterials with tunable functionality in electronics
5. Scientists solve mystery of colorful armchair nanotubes
6. iBioSeminars and iBioMagazine: Free, Online Biology Seminars and Short Talks by Leading Scientists
7. Chinese Scientists Zhen-Yi Wang and Zhu Chen Awarded 7th Annual Szent-Gyorgyi Prize for Progress in Cancer Research
8. Scientists decode brain waves to eavesdrop on what we hear
9. Receptos Scientists Publish Determination of a High Resolution Sphingosine 1-Phosphate Receptor 1 Structure in Science
10. Scientists learn how to out run damage with imaging technique
11. Design eye for the science guy: Drop-in clinic helps scientists communicate data
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/27/2014)... Nov. 27, 2014 Research and ... "Global Palmitic Acid Industry Report 2014" report to ... The Global Palmitic Acid Industry Report 2014 ... state of the global palmitic acid industry. ... including definitions, classifications, applications and industry chain structure. The ...
(Date:11/27/2014)... November 26, 2014 Biomedical devices that ... systems to enable 3D manufacture at the micro-nanoscale, and ... are among finalists in nine categories for the ... are sponsored by SPIE, the international society for ... , Winners will be announced by industry leaders on ...
(Date:11/26/2014)... November 26, 2014 The North ... segments the market for detailed analysis of the ... market to reach $616.3 million by 2018, growing ... 2018. , Browse through the TOC of the ... get an idea of the in-depth analysis and ...
(Date:11/26/2014)... , Nov. 26, 2014 The ... results from a survey of European physicians at ... on Innovation and Biological Therapies" at the Spanish ... event, hosted by EuropaBio and the Spanish Bioindustry ... of Health, physicians from Spanish oncology and rheumatology ...
Breaking Biology Technology:Global Palmitic Acid Industry Report 2014 2Finalists Named for 2015 Prism Awards for Photonics Innovation 2Finalists Named for 2015 Prism Awards for Photonics Innovation 3Finalists Named for 2015 Prism Awards for Photonics Innovation 4Finalists Named for 2015 Prism Awards for Photonics Innovation 5The North America Thermal Protective Clothing Market is estimated to grow up to $616.3 million by 2018 - Report by MicroMarket Monitor 2The North America Thermal Protective Clothing Market is estimated to grow up to $616.3 million by 2018 - Report by MicroMarket Monitor 3ASBM Presents European Physicians Survey at Spanish Ministry of Health 2
... hit universities and colleges across the country, including ... copyright infringement of both movies and music over ... several cease-and-desist notices to the Universirty of Wisconsin- ... were hosting movie downloads with content that belonged ...
... the information age similar to what the business world ... productivity of our staff, reduce costs, and improve our ... considerable engineering effort that requires hospital officials to look ... can embrace the changes that will improve healthcare. , ...
... Wisconsin has been a leader both in cutting-edge health ... nations leading research universities in UW-Madison, and leading-edge medical ... poised to lead again as the two fields merge ... engineering have long contributed to health care by providing ...
Cached Biology Technology:File Swapping: Download at your own Risk 2File Swapping: Download at your own Risk 3Im Still Waiting for the Information Age in Healthcare 2Im Still Waiting for the Information Age in Healthcare 3The Role of Engineering in Health Science and Technology 2The Role of Engineering in Health Science and Technology 3
(Date:11/3/2014)... low birth weight and preterm birth are linked to ... Findings published in the American College of Rheumatology (ACR) ... low birth weight and pre-term babies were not at ... adults. , According to the ACR, 27 million ... clinical OA. Symptoms of OA range from mild to ...
(Date:11/2/2014)... ORLEANS, LA (2 November 2014)—In support of a bold ... Bill & Melinda Gates Foundation today announced an award ... Malaria Vaccine Initiative (MVI) in building new vaccines that ... help realize the "accelerating to zero" agenda. Such vaccines ... what could be called an "immunological bed net." ...
(Date:11/2/2014)... into a bar and bump into a biologist . . ... some late-night nerd sketch, researchers have taken this premise and ... namely, finding meaning in the rising oceans of genomic data. ... mutations that genome-wide studies are publishing at a dizzying rate. ... the signal from the noise (and there is no shortage ...
Breaking Biology News(10 mins):Preterm, low birth-weight babies may need new hips in adulthood 2New malaria vaccines to prevent infection and block transmission get a shot in the arm 2New malaria vaccines to prevent infection and block transmission get a shot in the arm 3New malaria vaccines to prevent infection and block transmission get a shot in the arm 4Mutant models 2Mutant models 3Mutant models 4
... provide statin drugs free of charge so that customers can ... Imperial College London suggest in a new study published this ... in the blood. A wealth of trial data has proven ... attack risk. In a paper published in the Sunday ...
... Mount Sinai School of Medicine, New York, has been ... receive a 2010 ICAAC Young Investigator Award. Sponsored ... an early career scientist for research excellence in microbiology ... postdoctoral training in Molecular Biology at Harvard University in ...
... 250 scientists, engineers, government advisers and groups concerned ... from August 15-20, 2010 to consider the impact ... University of Maryland is co-sponsoring the conference, The ... ), which is co-organized by University of Maryland ...
Cached Biology News:Free statins with fast food could neutralize heart risk, scientists say 2University of Maryland co-sponsors International Conference on the Effects of Noise on Aquatic Life 2University of Maryland co-sponsors International Conference on the Effects of Noise on Aquatic Life 3
... in-house demand is causing shortages in your ... This can cause unwanted distractions, problems and ... royalties for your hard work and endeavour! ... build it up,and market it internationally. We ...
Topoisomerase I...
...
... virus is a type I eukaryotic topoisomerase ... turns (also called right- and left-handed supercoils) ... the reaction is a covalently closed, circular ... turns. DNA Topoisomerase I does not absolutely ...
Biology Products: