Navigation Links
Scientists discover repulsive side to light force
Date:7/13/2009

New Haven, Conn.A team of Yale University researchers has discovered a "repulsive" light force that can be used to control components on silicon microchips, meaning future nanodevices could be controlled by light rather than electricity.

The team previously discovered an "attractive" force of light and showed how it could be manipulated to move components in semiconducting micro- and nano-electrical systemstiny mechanical switches on a chip. The scientists have now uncovered a complementary repulsive force. Researchers had theorized the existence of both the attractive and repulsive forces since 2005, but the latter had remained unproven until now. The team, led by Hong Tang, assistant professor at Yale's School of Engineering & Applied Science, reports its findings in the July 13 edition of Nature Photonics's advanced online publication.

"This completes the picture," Tang said. "We've shown that this is indeed a bipolar light force with both an attractive and repulsive component."

The attractive and repulsive light forces Tang's team discovered are separate from the force created by light's radiation pressure, which pushes against an object as light shines on it. Instead, they push out or pull in sideways from the direction the light travels.

Previously, the engineers used the attractive force they discovered to move components on the silicon chip in one direction, such as pulling on a nanoscale switch to open it, but were unable to push it in the opposite direction.

Using both forces means they can now have complete control and can manipulate components in both directions. "We've demonstrated that these are tunable forces we can engineer," Tang said.

In order to create the repulsive force, or the "push," on a silicon chip, the team split a beam of infrared light into two separate beams and forced each one to travel a different length of silicon nanowire, called a waveguide. As a result, the two l
'/>"/>

Contact: Suzanne Taylor Muzzin
suzanne.taylormuzzin@yale.edu
203-432-8555
Yale University
Source:Eurekalert  

Page: 1 2

Related biology technology :

1. UCR physicist receives highest honor US government gives young scientists or engineers
2. Stem cells suspended state preserved by key step, scientists report
3. Scientists create first electronic quantum processor
4. Scientists identify gene vital to early embryonic cells forming a normal heart and skull
5. Israeli scientists show bacteria can plan ahead
6. Ten Top Latin American Scientists Named 2009 Pew Fellows in the Biomedical Sciences
7. A*STAR scientists invent the worlds only controllable molecule gear of minuscule size of 1.2nm
8. Monsanto, BASF Scientists Disclose Discovery of Gene Conferring Drought Tolerance in Corn Plants
9. Scientists create metal that pumps liquid uphill
10. Abbott Named One of the Top 10 Companies for Scientists
11. Scientists demonstrate effect of confining dielectrics on semiconductor nanowire conductivity
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Scientists discover repulsive side to light force
(Date:1/15/2014)... The Microcompetition with Foreign DNA theory explains ... these latent viruses is the Epstein Barr Virus (EBV), and ... (RA) is a chronic inflammatory disease that destroys the body’s ... RA patients have high concentrations of EBV DNA in their ...
(Date:1/15/2014)... 2014 Freeslate, Inc ., the ... that Lupin Limited, one of India’s top five pharmaceutical ... PharmD System for high throughput solid form screening. ... on a wide range of quality, affordable generic and ...
(Date:1/14/2014)... January 14, 2014 Date: Friday, April 11, ... Warrington Country Club, 1360 Almshouse Road, Warrington, Pa. ... organization solely dedicated to finding a cure for hepatitis B ... will host its annual Crystal Ball on Friday, April 11 ...
(Date:1/14/2014)... Jan. 14, 2014  3D Communications, a leading provider of strategic communications ... and media events in the United States ... Virginia Cox , JD, is returning to the firm,s ... re-joins 3D after more than two years of service as ...
Breaking Biology Technology:Study: Rheumatoid Arthritis (RA) Patients Have EBV; The CBCD Says this is Consistent with Microcompetition 2Study: Rheumatoid Arthritis (RA) Patients Have EBV; The CBCD Says this is Consistent with Microcompetition 3Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 2Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 3Hepatitis B Foundation to Host Annual Crystal Ball Gala 2Former FDA Associate Commissioner Returns To 3D Communications 2
... 6 Omeros Corporation today announced that The Michael ... against milestones to support the Company,s collaboration with The ... new target for the treatment of Parkinson,s disease. Located ... Omeros is the first to link its novel target ...
... N.Y., Jan. 6 Dedicated to the memory ... fields of angiogenesis and vasculogenesis and shed light on the ... special double issue (Volume 6, Number 3-4) of ... papers that reflect the research impact of one of the ...
... Jan. 6 AutoGenomics, a leader in providing automated, ... been invited and has accepted to present at the ... 2009 at the Westin St. Francis Hotel in San ... CEO will provide an overview of the Company at ...
Cached Biology Technology:Omeros Awarded Grant from The Michael J. Fox Foundation to Evaluate Novel Parkinson's Disease Target 2Omeros Awarded Grant from The Michael J. Fox Foundation to Evaluate Novel Parkinson's Disease Target 3Festschrift Issue Honoring Judah Folkman, M.D. in Lymphatic Research and Biology 2Festschrift Issue Honoring Judah Folkman, M.D. in Lymphatic Research and Biology 3
(Date:7/9/2014)... how a complex protein pivotal in the development of ... discovery answers a key question about one of the ... the subject of tens of thousands of research papers ... Zhang, a research student in Professor Sir Philip Cohen,s ... protein complex, called NF-κB, is activated. The results ...
(Date:7/9/2014)... associate professor of plant pathology and microbiology ... the 2014 Alexopoulos Prize by the Mycological ... the science of mycology the study of fungi ... plant pathogens, and medically important fungi. , The award ... mycologist. Stajich received the award last month in East ...
(Date:7/9/2014)... selection refers to species, selection for traits that are ... natural selection enhances opportunities to mate, the tail of ... the University of California, Riverside have now found that ... placenta are linked. Describing the life histories of ... Poeciliidae, the researchers found that species with placentas tend ...
Breaking Biology News(10 mins):Research reveals how key controller protein is switched on 2UC Riverside plant pathologist receives national recognition 2Biologists link sexual selection and placenta formation 2Biologists link sexual selection and placenta formation 3Biologists link sexual selection and placenta formation 4
... Ph.D., assistant professor of chemistry in Arts & ... the National Institute of Mental Health for research ... Wiring." Maurer,s long term objective is ... a variety of neuronal wiring processes. He is ...
... KSContact with nature has long been suspected to ... from the pain associated with recovery from surgery. ... plants and flowers for patients recovering from abdominal ... and Richard H. Mattson, researchers from the Department ...
... New research in an animal model suggests that a ... a variety of processed foods including meats, cheeses, beverages, ... tumors and may even contribute to the development of ... The study also suggests that dietary regulation of inorganic ...
Cached Biology News:Chemist receives NIH funding to unravel tricks of neuronal wiring 2Flowering plants speed post-surgery recovery 2Common food additive found to increase risk and speed spread of lung cancer 2Common food additive found to increase risk and speed spread of lung cancer 3
Alkaline Phosphatase (E. coli C75), 100 units. Removes 5'-phosphates from DNA. Category: Nucleotides & Enzymes & Biochemicals, Modifying Enzymes, Alkaline Phosphatases....
... CyScribe First-Strand cDNA Labeling System - ... 50 reactions. For the generation and ... reagents are packaged together for complete ... protocols can be used for performing ...
... Post-Labeling Reactive Dye Pack, 12 x ... specifically optimized for microarray labeling.Higher reactivity ... reactive dye per vial, at > ... individually dispensed, and packed in foil ...
... CyScribe GFX Purification Kit, 24 reactions. ... Cy3- and Cy5-labeled cDNA.Optimized reagents are ... and purification.Flexible and optimized protocols can ... with either Cy3- or Cy5-labeled nucleotides.Reliable ...
Biology Products: