Navigation Links
Cold atoms and nanotubes come together in an atomic 'black hole'
Date:4/6/2010

CAMBRIDGE, Mass., April 6, 2010 -- Carbon nanotubes, long touted for applications in materials and electronics, may also be the stuff of atomic-scale black holes.

Physicists at Harvard University have found that a high-voltage nanotube can cause cold atoms to spiral inward under dramatic acceleration before disintegrating violently. Their experiments, the first to demonstrate something akin to a black hole at atomic scale, are described in the current issue of the journal Physical Review Letters.

"On a scale of nanometers, we create an inexorable and destructive pull similar to what black holes exert on matter at cosmic scales," says Lene Vestergaard Hau, Mallinckrodt Professor of Physics and of Applied Physics at Harvard. "As importantly for scientists, this is the first merging of cold-atom and nanoscale science, and it opens the door to a new generation of cold atom experiments and nanoscale devices."

Hau and co-authors Anne Goodsell, Trygve Ristroph, and Jene A. Golovchenko laser-cooled clouds of one million rubidium atoms to just a fraction of a degree above absolute zero. The physicists then launched this millimeter-long atomic cloud towards a suspended carbon nanotube, located some two centimeters away and charged to hundreds of volts.

The vast majority of the atoms passed right by the wire, but those that came within a micron of it -- roughly 10 atoms in every million-atom cloud -- were inescapably attracted, reaching high speeds as they spiraled toward the nanotube.

"From a start at about 5 meters per second, the cold atoms reach speeds of roughly 1,200 meters per second, or more than 2,700 miles per hour, as they circle the nanotube," says Goodsell, a graduate student on the project and now a postdoctoral researcher in physics at Harvard. "As part of this tremendous acceleration, the temperature corresponding to the atoms' kinetic energy increases from 0.1 degrees Kelvin to thousands of degrees Kel
'/>"/>

Contact: Steve Bradt
steve_bradt@harvard.edu
617-496-8070
Harvard University
Source:Eurekalert  

Page: 1 2

Related biology technology :

1. Physicists pin down spin of surface atoms
2. Sheet of carbon atoms acts like a billiard table, physicists find
3. Sheet of carbon atoms acts like a billiard table, physicists find
4. Stopping atoms
5. Bon MOT: Innovative atom trap catches highly magnetic atoms
6. Memory in artificial atoms
7. Cold atoms could replace hot gallium in focused ion beams
8. Ancient diatoms lead to new technology for solar energy
9. The sensitive side of carbon nanotubes: Creating powerful pressure sensors
10. Understanding of actuator properties of carbon nanotubes bring micro machines closer
11. Improved wettability of carbon nanotubes opens the door to new possibilities
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Cold atoms and nanotubes come together in an atomic 'black hole'
(Date:7/26/2014)... July 26, 2014 Canada Endoscopy ... market data on the Canada Endoscopy Visualization Systems ... US dollars, volume (in units) and average prices ... Endoscopy Visualization Systems, Mid-Range Endoscopy Visualization Systems and ... at http://www.marketresearchreports.biz/analysis/213254 . , The report also ...
(Date:7/25/2014)... July 26, 2014 "Ischemic Stroke ... 2014" provides data on the Ischemic Stroke and ... elemental information and data relating to the clinical ... View full global Ischemic Stroke Research Report 2014 ... overview of the trial numbers and their recruitment ...
(Date:7/25/2014)... 25, 2014 Amgen (NASDAQ: AMGN ... a $0.61 per share dividend for the third quarter ... 5, 2014, to all stockholders of record as of ... About Amgen Amgen is committed to unlocking ... illnesses by discovering, developing, manufacturing and delivering innovative human ...
(Date:7/25/2014)... MA -- Trillions of bacteria live in each person,s ... help digest food and stave off harmful infections, but ... , To help shed light on the role of ... associate professor Eric Alm recently tracked fluctuations in the ... year. The findings, described in the July 25 issue ...
Breaking Biology Technology:Canada Endoscopy Visualization Systems Market Outlook to 2020: MarketResearchReports.Biz 2Canada Endoscopy Visualization Systems Market Outlook to 2020: MarketResearchReports.Biz 3Canada Endoscopy Visualization Systems Market Outlook to 2020: MarketResearchReports.Biz 4Canada Endoscopy Visualization Systems Market Outlook to 2020: MarketResearchReports.Biz 5Ischemic Stroke and Cerebral Stroke Global Clinical Trials Review H2, 2014: MarketResearchReports.Biz 2Ischemic Stroke and Cerebral Stroke Global Clinical Trials Review H2, 2014: MarketResearchReports.Biz 3Amgen Announces 2014 Third Quarter Dividend 2Amgen Announces 2014 Third Quarter Dividend 3Monitoring the rise and fall of the microbiome 2Monitoring the rise and fall of the microbiome 3
... , Evelyn McGown, Ph.D., Jinfang Liao, M.D., Ph.D., Molecular ... Olivier Dery, BD Biosciences Clontech, Palo Alto, CA. ... INTRODUCTION , Proteins inside eukaryotic ... balance between synthesis and degradation. Whereas protein synthesis is ...
... A. Gagne, E. Robitaille, M. Harvey, J.-A. St. Pierre, D. ... Introduction , High throughput ... process is typically highly automated and can provide screening rates over 100,000 ... simple, preferably mix and read type assays, where all reagents necessary to ...
... , This study demonstrated ... platform for a helicase functional assay. Helicase activity was measured on ... the oligos was biotinylated; the other was 5' end-labeled with [ ... a [ 33 P]-biotinylated DNA duplex substrate, then immobilized on the ...
Cached Biology Technology:Measurement of proteasome inhibition in live cells in Molecular Devices microplate fluorometers 2Measurement of proteasome inhibition in live cells in Molecular Devices microplate fluorometers 3Measurement of proteasome inhibition in live cells in Molecular Devices microplate fluorometers 4Measurement of proteasome inhibition in live cells in Molecular Devices microplate fluorometers 5Receptor Binding Assays using Fluorescence Polarization Detection: the [FP]2TM Characterized Tracers 2Receptor Binding Assays using Fluorescence Polarization Detection: the [FP]2TM Characterized Tracers 3Receptor Binding Assays using Fluorescence Polarization Detection: the [FP]2TM Characterized Tracers 4Receptor Binding Assays using Fluorescence Polarization Detection: the [FP]2TM Characterized Tracers 5Receptor Binding Assays using Fluorescence Polarization Detection: the [FP]2TM Characterized Tracers 6Evaluation of FlashPlate in a Helicase Assay 2Evaluation of FlashPlate in a Helicase Assay 3
(Date:7/25/2014)... of Adelaide has opened the way for the development of ... In Australia, annual barley production is second only to wheat ... of the most important diseases of barley. , Senior Research ... of special growths on the cell walls of barley plants ... , The research, by the ARC Centre of Excellence in ...
(Date:7/25/2014)... (SB) is a complex congenital central nervous system ... of the neural tubes during the embryonic phase. ... and fecal incontinence and neurocognitive retardation. Such problems ... of life. Researchers at Ankara Physical Medicine and ... functional performance in children with SB, using the ...
(Date:7/25/2014)... reach puberty is influenced by ,imprinted genes,a subset of genes ... This is the first evidence that imprinted genes can ... this study were published today in the journal Nature ... is a marker for the timing of puberty in females. ... between girls, is an inherited trait, and is linked to ...
Breaking Biology News(10 mins):New hope for powdery mildew resistant barley 2Could age of first period influence development of diseases in older women? 2
... the International Symposium " Nature and Governance Biodiversity Data, Science, ... 11 to 12 February. The symposium aimed at clarifying and popularizing ... Meeting held from 13 to 15 February 2013. The ... and brought together high-ranking speakers and guests from across the world ...
... chair!" That command given by countless parents to their ... a robot that is actually a computerized model of a ... a University of Iowa research program. That,s because a ... to accurately predict the role posture plays in transferring the ...
... A team of UCLA-led researchers has identified a protein ... as a weapon against deadly human pathogenic viruses such ... designated "priority pathogens" for national biosecurity purposes by the ... In a study published in the January issue ...
Cached Biology News:Virtual vehicle vibrations 2Newly identified natural protein blocks HIV, other deadly viruses 2
Mouse monoclonal antibody raised against a partial recombinant AAAS. NCBI Entrez Gene ID = AAAS...
... Cosmid Cloning Kit enables you to prepare, ... unbiased primary cosmid library of genomic DNA ... sublibraries. High efficiency cosmid library construction is ... protocols. First, genomic DNA is randomly sheared ...
Mouse monoclonal antibody raised against a partial recombinant EBI3. NCBI Entrez Gene ID = EBI3...
... VersaDoc MP 4000 System is a ... system capable of supporting a wide ... chemiluminescence, densitometry, and chemiflourescence. Red, ... imaging of multiplexed fluorescent samples, reducing ...
Biology Products: