Navigation Links
Tying the knot with computer-generated holograms: Winding optical path moves matter
Date:3/15/2011

WASHINGTON, March 15In the latest twist on optical knots, New York University (NYU) physicists have discovered a new method to create extended and knotted optical traps in three dimensions. This method, which the NYU scientists describe in the Optical Society's (OSA) open-access journal Optics Express, produces "bright" knots, where the maximum of the light intensity traces out a knotted trajectory in space, for the first time allowing microscopic objects to be trapped along the path of the knot. The method may even, one day, help enable fusion energy as a practical power source, according to the NYU team.

Optical traps can be used to confine and manipulate small objectsranging in size from a few nanometers to several hundred micrometersin 3-D. They work because variations in the intensity of the light produce forces that push small objects toward bright regions. The trapping of small objects is widely used for a broad range of research applications in biophysics, condensed matter physics and medical diagnostics.

Ordinary optical traps use Gaussian laser beams that focus to a spot. The beams being used to create extended optical traps focus instead to curves, much like the bright patterns on the bottom of swimming pools. And these bright curves can be tied in knots.

Knotted traps are made by imprinting a computer-generated hologram on the wavefronts of an otherwise ordinary beam of light. NYU undergraduate student Elisabeth Shanblatt and NYU physicist David Grier, the authors of the Optics Express paper, use a "liquid-crystal spatial light modulator" to project their holograms. This is essentially the first cousin of a conventional LCD television screen. The spatial light modulator imprints a calculated pattern of phase shifts onto the light. When the modified beam is brought to a focus with a high-power lens, the region of maximum intensity takes the form of a 3-D curve. This curve can cross over and through it
'/>"/>

Contact: Angela Stark
astark@osa.org
202-416-1443
Optical Society of America
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Breakthrough optical technology to assess colon cancer risk, accuracy
2. Femtomolar optical tweezers may enable sensitive blood tests
3. Strained quantum dots show new optical properties
4. Frost & Sullivan Recognizes MIRTEC With the 2009 Award for Automated Optical Inspection Product Innovation of the Year
5. Optical Legos: Building nanoshell structures
6. Applied physicists create building blocks for a new class of optical circuits
7. Optical imaging technique for angioplasty
8. Optical technique reveals unnexpected complexity in mammalian olfactory coding
9. Optical water quality assessment
10. Mayo Clinic researchers discover and manipulate molecular interplay that moves cancer cells
11. Another JDRF partner moves research forward with collaboration agreement for diabetes treatment
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Tying the knot with computer-generated holograms: Winding optical path moves matter
(Date:9/18/2014)... Colo., USA A new GSA Bulletin ... the lower Rio Puerco and Chaco Wash in northern ... rings from salt cedar and willow, investigators were able ... or greater. They then combined this data with aerial ... the history of these arroyos. , Arroyos are deep, ...
(Date:9/18/2014)... McGill University and the Quebec government have discovered ... Canadian Journal of Fisheries and Aquatic Sciences . ... cleansers, or industrial cleansers, to which they are ... size and buoyancy, they may readily pass through ... contaminant in the world,s oceans, but have only ...
(Date:9/18/2014)... information is stored in DNA, tiny strands of nucleic ... bodies. To express this genetic data, our DNA is ... into proteins that perform tasks in our cells. ... of RNA molecule. Unlike all other known RNAs, this ... circRNA molecules are abundant, little has been known about ...
Breaking Biology News(10 mins):Tree rings and arroyos 2Tree rings and arroyos 3Tree rings and arroyos 4Tree rings and arroyos 5Tree rings and arroyos 6Tree rings and arroyos 7Microplastic pollution discovered in St. Lawrence River sediments 2Scientists find how mysterious 'circular RNA' is formed, claim muscular dystrophy link 2
... of organic produce increases with consumers, growers need more ... and Gary R. Cline (retired) of the Land Grant ... designed to investigate options for reducing the presence of ... roots, shoots, and flowers, and transmit the bacterial wilt ...
... and the Society for Mycotoxin Research have signed an ... , the official journal of the Society. Aimed ... the journal deals with all topics related to mycotoxins, ... issue will appear in March 2009. High-quality original ...
... a $2.9 million, three-year grant from the Minerals Management ... at Austin marine scientists will assess the biological and ... before the area opens for offshore oil drilling. ... Interior) brings together several highly experienced Arctic scientists from ...
Cached Biology News:Controlling cucumber beetles organically 2Mycotoxin Research joins Springer's life sciences journals program 2Marine scientists to assess environment before offshore drilling begins in US arctic waters 2Marine scientists to assess environment before offshore drilling begins in US arctic waters 3
(Date:9/19/2014)... Follow us on LinkedIn ... the world has attracted diverse players including academic ... The early years of nanotechnology development was dominated ... the high risks involved, which deterred private and ... evolving technology have been growing over the years, ...
(Date:9/19/2014)... SAN DIEGO , Sept. 19, 2014 ... engaged in the development of high-value and difficult to ... will be presenting at the 21 st Annual ... New York . Bertrand Liang , chief ... the company,s development programs and business strategy on Friday, ...
(Date:9/19/2014)... -- Dublin ... the addition of the  "Micro Market Monitor : ...      (Logo: http://photos.prnewswire.com/prnh/20130307/600769) , , ,The ... segments in the chromatography market. The market was ... to reach $2.0 billion by 2019, at a ...
(Date:9/18/2014)... HealthTronics, Inc ., a ... products and services, announced that a poster related ... versus external beam radiotherapy (EBRT) is being presented ... Association (MAAUA) Annual Meeting in Baltimore, Maryland September ... Cryosurgery and External Beam Radiation as Treatments for ...
Breaking Biology Technology:Growing R&D Investments & Developments in Nanomaterials to Drive the Global Nanotechnology Market, According to New Report by Global Industry Analysts, Inc. 2Growing R&D Investments & Developments in Nanomaterials to Drive the Global Nanotechnology Market, According to New Report by Global Industry Analysts, Inc. 3Growing R&D Investments & Developments in Nanomaterials to Drive the Global Nanotechnology Market, According to New Report by Global Industry Analysts, Inc. 4Pfenex to Present at Upcoming Industry Conference on September 26 2Micro Market Monitor : Global Pre-packed Chromatography Columns 2HealthTronics Announces Data Comparing Cryotherapy Versus Radiation for Treating Prostate Cancer Poster Presented at the American Urological Association Regional Meeting 2
... Poniard Pharmaceuticals, Inc. (Nasdaq: PARD ), ... it has filed a shelf registration statement on Form ... when declared effective by the SEC, will allow Poniard ... to $60 million aggregate amount of its common stock, ...
... Fate Therapeutics, Inc. announced today ... owned by Children,s Hospital Boston and Massachusetts General Hospital. ... supporting hematopoietic stem cells. These proprietary technologies developed ... Program at Children,s Hospital Boston and a scientific founder ...
... CITY, Shandong, China, May 15 /PRNewswire-Asia-FirstCall/ -- China,Biologic ... or the,Company,), one of the leading plasma-based pharmaceutical ... announced that the Company,s,management will present at the ... in New York, NY on May 18, 2009 ...
Cached Biology Technology:Poniard Pharmaceuticals Files Shelf Registration 2Poniard Pharmaceuticals Files Shelf Registration 3Fate Therapeutics Granted Exclusive License for Stem Cell Modulators by Children's Hospital Boston and Massachusetts General Hospital 2Fate Therapeutics Granted Exclusive License for Stem Cell Modulators by Children's Hospital Boston and Massachusetts General Hospital 3China Biologic Products to Present at CCG IR's China Rising Conference and Oppenheimer's China Dragon Call Conference in New York 2China Biologic Products to Present at CCG IR's China Rising Conference and Oppenheimer's China Dragon Call Conference in New York 3China Biologic Products to Present at CCG IR's China Rising Conference and Oppenheimer's China Dragon Call Conference in New York 4
Request Info...
4-Hydroxy-3-nitrophenylacetyl hapten is conjugated to KLH (Keyhole Limpet Hemocyanin) lysine through amide bonds....
Estrogen Receptor (ER) Competitor Assay Kits Green for Estrogen Receptors-alpha and -beta (ER-Alpha and ER-Beta) are ideal for screening novel estrogen receptor binding compounds and endocrine disrup...
Human Aminopeptidase P2/XPNPEP2 Affinity Purified PAb ENTREZ GeneID: 7512...
Biology Products: