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:9/30/2014)... , September 30, 2014 ... intuitive browsing of chemistry in documents ... software solutions and consulting services for life science ... information and generate Markush structures from documents. ... organizations intellectual property, however generating and understanding Markush ...
(Date:9/30/2014)... Sept. 30, 2014 FemCap Inc., www.femcap.com ... its receipt of a patent No: US, 8,795,248 B2 ... also received FDA clearance in the U.S., 510(K) K121857, ... in Europe. This patent is related to its menstrual cup ... the company is releasing FemmyCycle Teen, a third menstrual ...
(Date:9/30/2014)... SoundConnect, an award ... dedicated to supporting business communication solutions, including business ... a carrier services specialist has joined ... connected and productive at all times. This growth ... businesses to cloud communications services. On a ...
(Date:9/30/2014)... Back in the 1970’s, many companies calculated their ... which included space for circulation and file storage. “It ... at Nidea Corporate Real Estate / ITRA Global , ... 2000, however, 250 square feet per employee became the ... to 175 to 225 square feet, and over the next ...
Breaking Biology Technology:ChemAxon Introduces ChemCurator for Chemical Information Extraction and Markush Structure Creation 2The FemmyCycle 2SoundConnect Expands Carrier Services Division 2ITRA Global Reports on How Companies Are Squeezing More Employees into Less Office Space 2ITRA Global Reports on How Companies Are Squeezing More Employees into Less Office Space 3
... , ... , , , Antibodies ... arrays) or as biopharmaceutical therapeutics. In,all cases the successful production ... criteria include: protein identification,quantitation and the monitoring of purity and ...
... , ... , , , ... of the Agilent 2100 bioanalyzer in combination,with the Protein 200 Plus ... denaturing gel-elctrophoresis (SDSPAGE).,The results showed that the Agilent 2100 bioanalyzer provides,fast ...
... , ... , , , , ... an siRNA sequence,for a target gene, which are of,high importance ... crucial.,An efficient method to optimize,transfection and gene silencing,is critical for ...
Cached Biology Technology:Quality control of antibodies using the,2100 bioanalyzer and the Protein 200,Plus assay 2Quality control of antibodies using the,2100 bioanalyzer and the Protein 200,Plus assay 3Comparison of different protein,quantitation methods 2Comparison of different protein,quantitation methods 3Comparison of different protein,quantitation methods 4Comparison of different protein,quantitation methods 5Comparison of different protein,quantitation methods 6Comparison of different protein,quantitation methods 7Comparison of different protein,quantitation methods 8Comparison of different protein,quantitation methods 9Confirming gene silencing,mechanism by pGFP/GFP22 ,siRNA co-transfection 2Confirming gene silencing,mechanism by pGFP/GFP22 ,siRNA co-transfection 3Confirming gene silencing,mechanism by pGFP/GFP22 ,siRNA co-transfection 4
(Date:9/30/2014)... Salk professor and Howard Hughes Medical Institute investigator, ... named recipients in the 2014 round of grants ... the BRAIN (Brain Research through Advancing Innovative Neurotechnologies) ... announced September 30, provides more than $3 million ... years. , The BRAIN Initiative, launched last year, ...
(Date:9/30/2014)... water may increase the risk of stillbirth and ... by a Boston University School of Public Health ... Environmental Health , compared 1,091 PCE-exposed pregnancies ... Cape Cod, Ma., where water was contaminated in ... the installation of vinyl-lined asbestos cement pipes. PCE ...
(Date:9/30/2014)... live in almost any aquatic environment on Earth, but ... species are pushed to the limit. The amount of ... critical for how different species cope in the future, ... of Gothenburg, published in the scientific journal Proceedings ... continues apace thanks to increasing levels of greenhouse gases ...
Breaking Biology News(10 mins):Salk scientists receive $3 million for BRAIN Initiative grant 2Contaminated water linked to pregnancy complications, BU study finds 2Shape up quickly -- applies to fish, too! 2
... in ecological or environmental conservation remains contentious the ... demand that governments regulate and encourage restoration projects; ... corporations makes such interventions politically difficult. However, ... a handful of developing nations, alongside South Africa, ...
... , RIVERSIDE, Calif. Alan McHughen , a ... University of California, Riverside, has been chosen by the ... Sciences to receive a 2011-2012 Jefferson Science Fellowship ... selected for the fellowships this year. Successful ...
... is redefining the rules by which we live and at ... level, several areas of the globe are in danger of ... and maybe, one day, live in floating houses. Depending ... others in their adjustment to the effects of global warming, ...
Cached Biology News:UC Riverside plant biotechnologist receives prestigious Jefferson Science Fellowship 2UC Riverside plant biotechnologist receives prestigious Jefferson Science Fellowship 3Floating houses 2Floating houses 3