Navigation Links
Physicists take new look at the atom
Date:1/25/2011

Measuring the attractive forces between atoms and surfaces with unprecedented precision, University of Arizona physicists have produced data that could refine our understanding of the structure of atoms and improve nanotechnology. The discovery has been published in the journal Physical Review Letters.

Van der Waals forces are fundamental for chemistry, biology and physics. However, they are among the weakest known chemical interactions, so they are notoriously hard to study. This force is so weak that it is hard to notice in everyday life. But delve into the world of micro-machines and nano-robots, and you will feel the force everywhere.

"If you make your components small enough, eventually this van-der-Waals potential starts to become the dominant interaction," said Vincent Lonij, a graduate student in the UA department of physics who led the research as part of his doctoral thesis.

"If you make tiny, tiny gears for a nano-robot, for example, those gears just stick together and grind to a halt. We want to better understand how this force works."

To study the van-der-Waals force, Lonij and his co-workers Will Holmgren, Cathy Klauss and associate professor of physics Alex Cronin designed a sophisticated experimental setup that can measure the interactions between single atoms and a surface. The physicists take advantage of quantum mechanics, which states that atoms can be studied and described both as particles and as waves.

"We shoot a beam of atoms through a grating, sort of like a micro-scale picket fence," Lonij explained. "As the atoms pass through the grating, they interact with the surface of the grating bars, and we can measure that interaction."

As the atoms pass through the slits in the grating, the van-der-Waals force attracts them to the bars separating the slits. Depending on how strong the interaction, it changes the atom's trajectory, just like a beam of light is bent when it passe
'/>"/>

Contact: Daniel Stolte
stolte@email.arizona.edu
520-626-4402
University of Arizona
Source:Eurekalert  

Page: 1 2 3 4

Related biology technology :

1. Rice physicists discover ultrasensitive microwave detector
2. UC Riverside physicists pave the way for graphene-based spin computer
3. UBC, Max Planck formalize partnership among worlds top quantum physicists
4. Physicists capture first images of atomic spin
5. U-M physicists create first atomic-scale map of quantum dots
6. Physicists at UC Santa Barbara make discovery in quantum mechanics
7. NYU physicists find way to explore microscopic systems through holographic video
8. Nanophysicists find unexpected magnetic effect
9. Physicists discover important step for making light crystals
10. U of T physicists squeeze light to quantum limit
11. McGill physicists find a new state of matter in a transistor
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Physicists take new look at the atom
(Date:9/30/2014)... September 30, 2014 Applying a well-known optical ... at Harvard University has demonstrated the ability to ... work that holds promise for making future, flexible ... the sides of next-gen rocket ships and spacecraft ... passes through oil in water, it becomes iridescent, ...
(Date:9/30/2014)... Sept. 30, 2014 Report Details ... highest potential revenues Do you want to find ... you revenue predictions for those biological drugs from ... you find financial data, R&D trends, opportunities and ... sales forecasts to 2024 at overall world market, ...
(Date:9/30/2014)... Proove Biosciences , the commercial ... announce a new genetic test built upon research from ... Test will provide physicians with an objective way ... levels are stratified between individuals. With this new test, ... has a genetic predisposition that will affect their pain ...
(Date:9/30/2014)... Fast, semi-automatic creation of ... documents ChemAxon , a leader ... for life science research, launches ChemCurator, an application ... from documents. Markush structures are essential ... and understanding Markush structures is a difficult and ...
Breaking Biology Technology:Taking thin films to the extreme 2Biosimilars and Follow-On Biologics: World Industry and Market Prospects 2014-2024 2Biosimilars and Follow-On Biologics: World Industry and Market Prospects 2014-2024 3Biosimilars and Follow-On Biologics: World Industry and Market Prospects 2014-2024 4Biosimilars and Follow-On Biologics: World Industry and Market Prospects 2014-2024 5Proove Biosciences is Now Offering the Proove Pain Perception Genetic Test to Help Physicians Assess Patient Pain Tolerance Levels 2Proove Biosciences is Now Offering the Proove Pain Perception Genetic Test to Help Physicians Assess Patient Pain Tolerance Levels 3ChemAxon Introduces ChemCurator for Chemical Information Extraction and Markush Structure Creation 2
... ... partners to quickly and accurately forecast, plan and respond to ever-changing market demands, ManufacturingOne ... ... -- In response to a growing customer base in the high-tech manufacturing segment, ...
... ... while inviting others to join the cause for good science , ... CHAMPAIGN, IL and MELBOURNE, Australia (PRWEB) ... Web site, Academics Review , to examine claims against GM foods by Jeffrey ...
... ... guest speakers, everything sales and marketing professionals will need to pass the critical ... pipeline acceleration, inside sales, optimizing organizational structure and solutions-driven corporate/channel marketing – will ... ...
Cached Biology Technology:YASH Technologies™ Launches ManufacturingOne, a Qualified SAP Business All-in-One Partner Solution for the High-tech Manufacturing Industry 2YASH Technologies™ Launches ManufacturingOne, a Qualified SAP Business All-in-One Partner Solution for the High-tech Manufacturing Industry 3YASH Technologies™ Launches ManufacturingOne, a Qualified SAP Business All-in-One Partner Solution for the High-tech Manufacturing Industry 4Academics Launch New Web Site Holding Jeffrey Smith's Claims on GM Foods Up to Peer-Reviewed Science 2Academics Launch New Web Site Holding Jeffrey Smith's Claims on GM Foods Up to Peer-Reviewed Science 3Industry Leaders from Blue Coat, Oracle, Polycom, Siemens and Taleo Headline SiriusDecisions Sales and Marketing Summit 2010 2Industry Leaders from Blue Coat, Oracle, Polycom, Siemens and Taleo Headline SiriusDecisions Sales and Marketing Summit 2010 3Industry Leaders from Blue Coat, Oracle, Polycom, Siemens and Taleo Headline SiriusDecisions Sales and Marketing Summit 2010 4
(Date:9/30/2014)... do seedless watermelon, salmon, and strawberries all have in ... two sets of chromosomes and are diploid, these organisms ... sets of chromosomesseedless watermelon and salmon have 3 and ... While this might seem surprising, in fact most ... first discovered over a century ago, but only recently, ...
(Date:9/30/2014)... The National Institutes of Health (NIH) awarded ... to develop an electrode array system that will ... works through unprecedented resolution and scale. , LLNL,s ... support President Obama,s BRAIN (Brain Research through ... effort to revolutionize our understanding of the human ...
(Date:9/30/2014)... of environmental scientists and engineers, led by Clemson ... three-year, $5.25 million grant from the U.S. Department ... to make a direct positive impact on South ... disposal of radioactive contaminants. , "Understanding the scientific ... with environmental aspects of nuclear technologies is imperative ...
Breaking Biology News(10 mins):Gene doubling shapes the world: Instant speciation, biodiversity, and the root of our existence 2Gene doubling shapes the world: Instant speciation, biodiversity, and the root of our existence 3Gene doubling shapes the world: Instant speciation, biodiversity, and the root of our existence 4NIH taps lab to develop sophisticated electrode array system to monitor brain act 2NIH taps lab to develop sophisticated electrode array system to monitor brain act 3Researchers get $5.25 million to advance nuclear technologies in South Carolina 2
... Remember frozen iguanas falling from trees during Florida,s 2010 ... at the University of Miami (UM) Rosenstiel School of Marine ... numbers due to the cold conditions. "It was a ... Rosenstiel School and lead author of the study. "Centuries-old coral ...
... helicopter parents who restrict their kids, unstructured play may ... latest issue of the American Journal of Play ... group of experts to probe the near-extinction of free ... "Remarkably, over the last 50 years, opportunities for children ...
... at Oregon State University have discovered that a freshwater species ... amphibian populations around the world. This tiny zooplankton, called ... for biological control of this deadly fungus, the scientists said, ... The fungus, B. dendrobatidis , is referred to ...
Cached Biology News:New study shows that Florida's reefs cannot endure a 'cold snap' 2Lack of free play among children is causing harm, say experts in American Journal of Play 2Possible biological control discovered for pathogen devastating amphibians 2
Anti-MMP-25 (Membrane-type MMP-6, Mt6MMP), hinge region; rabbit host...
Anti-MMP-25 (Membrane-type MMP-6, Mt6MMP), hinge region; rabbit host...
Desmosomal Protein Immunogen: Full length, native protein purified from human epidermal keratins. Storage: -20 C, Avoid Freeze/Thaw Cycles...
PPIF Antibody...
Biology Products: