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Optical trapping News
Optical Control of Biofilm Growth Supports Biomaterials Advancements
LOS ANGELES, Feb. 12, 2024 — As sources of antibiotic-resistant bacteria, biofilms can cause serious issues in health care and other industries. Conversely, biofilms of harmless bacteria can be used to develop new biomaterials. The power to optically control biofilm formation...
All-Fiber-based Approach Could Expand Applications of Bessel Beam
THUWAL, Saudi Arabia, Aug. 22, 2022 — A team at King Abdullah University of Science and Technology (KAUST) demonstrated an all-fiber-based approach to generating Bessel beams that could be useful for applications ranging from optical trapping to quantum communications. Bessel beams look...
Optimized Optical Tweezers Look Before Grabbing
FREIBURG IM BREISGAU, Germany, Dec. 31, 2021 — Optical tweezers working in tandem will one day be able to grasp and manipulate cell clusters with a high level of dexterity, according to research from the University of Freiburg. The work would allow greater study of tiny objects such as miniature...
On-Demand Optical Singularities Strengthen Range of Applications
CAMBRIDGE, Mass., July 26, 2021 — A group led by Federico Capasso at the Harvard John A. Paulson School of Engineering and Applied Sciences (SEAS) has broadened the study of optical singularities to include to zero-dimensional (point) and 2D (sheet) optical singularities. The group...
Holography Method Creates Animations in Free Space
PROVO, Utah, May 13, 2021 — A holography technique developed at Brigham Young University enables the creation of light-based animations that can be seen with the naked eye, without a screen. Electrical engineering professor Dan Smalley and his team garnered international...
Metalens Will Deliver on Challenging Printing Applications, Direct Laser Lithography
EVANSTON, Ill., April 23, 2021 — A team at Northwestern University designed a high-numerical aperture metalens and fabricated it on an optical fiber tip, using a set of processes that establishes an alternate path for optical nanoparticle trapping and other imaging applications...
Lasers Move Diamond Nanoparticles into Bio Applications
SAPPORO, Japan, March 31, 2021 — Scientists from Hokkaido University, Osaka Prefecture University, and Osaka University showed the ability to use laser beams of different wavelengths, and from opposing directions, to move diamond nanoparticles that are roughly 50 nm in size in a...
Optical Tweezing Inspires Nanoscopic Trapping Method
SYDNEY, March 9, 2021 — Researchers from the University of Technology Sydney (UTS) have deployed the existing principles of optical tweezer technology, which enables the manipulation and assemblage of nanoparticles, as a base for a technique that allows them to manipulate...
Arthur Ashkin, Nobel Laureate and Pioneer in Optical Trapping, Dies at 98
Sep 25, 2020 — Arthur Ashkin, Nobel laureate, has died at the age of 98. Ashkin, known for his pioneering work in the creation of optical tweezers, was the first to observe optical gradient forces on atoms, the first to perform laser cooling of atoms known as...
Supertwisted Light from a Metasurface Laser
Jun 29, 2020 — Structured light refers to the tailoring or shaping of light in all its degrees of freedom. The recent development of structured light supports applications such as optical communications, enhanced resolution in imaging, and optical trapping and...
At SPIE Optics + Photonics, Going Back to Get Ahead
SAN DIEGO, Aug. 15, 2019 — For photonics, forward progress may start by going in reverse — when it makes sense. That was a theme in the SPIE Optics + Photonics conference held in San Diego Aug. 11-15. An example showed up in a plenary talk given by Jelena Vuckovic, a...
Microrotors Trap Tiny Objects Without Exposing Them to Light
EXETER, England, March 18, 2019 — A team of researchers from the Universities of Glasgow, Bristol, and Exeter have developed a technique that optically traps microscopic objects by using hydrodynamic forces to exert nanoscale-precision control over aqueous particles, without...
Device for Measuring Nanoparticles Could Aid in Quantum Measurement
VIENNA, Dec. 19, 2018 — A new device that can measure and control an optically trapped nanoparticle with extreme sensitivity has been developed by researchers at the University of Vienna and the Delft University of Technology. Although this approach has been used before...
Nano-optical Tweezers Make Single-Molecule Protein Study Easier
VICTORIA, British Columbia, Canada, May 23, 2014 — Laser tweezers could eventually replace fluorescence imaging in applications such as studying heterogeneity in virus populations and nanoparticle manipulation. A nano-optical tweezer, developed at the University of Victoria, facilitates the capture...
Plasmonic Optical Tweezers Could Trap Tiny Proteins
STANFORD, Calif., Dec. 5, 2012 — An innovative aperture design based on plasmonics could focus light so effectively that tiny beams could trap and manipulate particles as small as a few atoms.
Curved light bends the rules
TEL AVIV, Israel – Conventional thinking leads us to believe that light only follows a straight path and that it diffracts as it travels. But some scientists are breaking all the rules by creating a new class of nondiffracting optical beam that can bend around...
Solar, Optics, Nano Addressed at Optics + Photonics 2010
SAN DIEGO, July 16, 2010 — Detailing the latest research and technologies for enabling better care of our environment, our communities and the planet, SPIE’s Optics + Photonics 2010 will take place August 1-5 at the San Diego Convention Center in San Diego. With access...
Twisted physics
BRISTOL, UK – A group of UK scientists has light theory all tied up in a paper published in the February 2010 issue of Nature Physics. Using lasers under holographic control, Dr. Mark Dennis and fellow physicists at the universities of Bristol, Glasgow and...
CVI: Getting the Word Out
SAN FRANCISCO, Jan. 27, 2010 – CVI Melles Griot is working at SPIE Photonics West on getting the word out, not only about its new products but also about products with which people may not be familiar. ...
Nano, Solar Top Show Agenda
SAN DIEGO, June 24, 2009 -- New research in nanoengineering, solar, optical engineering and photonics will be presented, and 400 years of telescopes celebrated, at SPIE Optics+Photonics 2009, the most multidisciplinary science and engineering event in North America. The event...
Nano, Solar Top Show Agenda
SAN DIEGO, June 24, 2009 -- New research in nanoengineering, solar, optical engineering and photonics will be presented, and 400 years of telescopes celebrated, at SPIE Optics+Photonics 2009, the most multidisciplinary science and engineering event in North America. The event...
'Large' Object Laser-Cooled Near Absolute Zero
CAMBRIDGE, Mass., April 6, 2007 -- A coin-sized object has been cooled to within one degree of absolute zero through a laser-cooling technique that could one day allow scientists to observe quantum behavior in "large" objects. The study marks the coldest temperature ever reached...
Relationship of Temperature Rise to Incident Laser Power in Optical Traps
Apr 1, 2007 — Optical trapping often is used to evaluate nanometer-size systems by introducing up to hundreds of milliwatts of laser power into the focus. The resulting power intensity can raise local temperatures and induce unwanted physical, chemical or...
Cone-Shaped Brewster Surface Produces Radially Polarized Beam
Dec 1, 2005 — Radially polarized laser beams — in which the electric-field vector is always oriented in the radial direction — may be advantageous for the optical trapping and manipulation of small particles. Although many techniques for generating radially...
(24 results found)
May 2024
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