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Liquid Crystal Tied Into Knots to Advance Photonics
COVENTRY, England, Aug. 20, 2013 — Using a miniature Möbius strip made from silica particles, scientists at the University of Warwick have shown how to tie liquid crystals in knots. Researchers hope to harness crystals in the next generation of advanced materials and photonic devices by understanding the intricate configurations and properties of the substance. Liquid crystal knots created around miniature Möbius strip particles (simulation). Different knots are produced by strips with different numbers of t...
Photonics Firm a Finalist in Nokia Sensing Contest
LOS ANGELES, Aug. 19, 2013 — A technology firm founded by University of California, Los Angeles, professor Aydogan Ozcan and his students has made it to the final round of a $2.25 million international competition for companies improving health care by developing advanced,...
‘Plasmofluidic’ Lens is Tunable, Reconfigurable
UNIVERSITY PARK, Pa., Aug. 16, 2013 — Laser-induced bubbles on a metal film are the first demonstration of a plasmonic lens in a microfluidic environment, report engineers at Pennsylvania State University. The unique integration of plasmonics and microfluidics could help in developing...
IR Camera a Valuable Tool for Protecting Whales
BREMERHAVEN, Germany, Aug. 15, 2013 — An IR camera has been turned into a tool for automatic whale detection onboard the research vessel Polarstern, designed to detect whales by their spouts during times of loud industrial noise. Regulatory authorities request mitigation measures for...
Liquid Crystal Matrix Slows Light to 1 Billionth of its Speed
NICE, France, and XIAMEN, China, Aug. 14, 2013 — Light can be slowed to less than a billionth of its top speed by using embedded dye molecules in a liquid crystal matrix, which could lead to new technologies in remote sensing and measurement science. Taking advantage of light’s travel as a...
Michigan Powers Up Photonics Program
FLINT, Mich., Aug. 13, 2013 — Michigan’s first photonics and laser technology associate degree program will launch Sept. 30 at Baker College of Flint under a $200,000 grant from the National Science Foundation (NSF).
Nanodiamonds Optically Levitated
ROCHESTER, N.Y., Aug. 13, 2013 — A technique using two lasers — one to trap nanodiamonds in space and the other to cause them to emit light at given frequencies — could prove invaluable in high-sensitivity nanoscale force sensing. Researchers at the University of...
OP-TEC Receives NSF Funding for Photonics Education
WACO, Texas, Aug. 13, 2013 — The National Center for Optics and Photonics Education (OP-TEC) has been awarded a $3.5 million grant from the National Science Foundation (NSF) to increase the supply of well-educated photonics technicians by building and strengthening photonics...
Mechanical Pressure Converted to Light Signals
ATLANTA, Aug. 12, 2013 — A new sensor device uses thousands of nanometer-scale wires to convert mechanical pressure into light signals that can be captured and processed optically. Developed at the Georgia Institute of Technology (Georgia Tech), the sensor could be used in...
Detecting Aircraft Turbulence with Laser Radar
COLOGNE, Germany, Aug. 9, 2013 — A laser-based method of detecting unsteady airflow could provide a solution to sudden airplane turbulence.
Silicon QDs Could be Safe for Deep-Tissue Imaging
BUFFALO, N.Y., Aug. 8, 2013 — Monkeys injected with large doses of silicon nanocrystals displayed no adverse health effects three months later, a promising step forward in the potential development of human biomedical imaging applications.
Squeezed Light Created On-Chip
PASADENA, Calif., Aug. 8, 2013 — A microchip-based way to create squeezed light could assist a range of precision measurements and provide a viable route toward real-world on-chip sensor applications and technology.
Fujimoto Receives IEEE Photonics Award
CAMBRIDGE, Mass., Aug. 7, 2013 — The Institute of Electrical and Electronics Engineers (IEEE) has awarded James Fujimoto, Elihu Thomson Professor of Electrical Engineering at MIT, the 2014 IEEE Photonics Award for his pioneering work in the development of OCT for medical...
Laser Inserts DNA into Cells with a Light Touch
GWANGJU, South Korea, Aug. 7, 2013 — A method that uses a femtosecond laser to poke a hole in the surface of a single cell and gently tug a piece of DNA through it with optical tweezers offers greater control of gene therapy and genetic engineering. Developed in the School of...
Light Alters Interaction of Organic Molecules
CAMBRIDGE, Mass., Aug. 7, 2013 — A new platform enables emissions from organic molecule to be manipulated when the molecules are suspended on top of a photonic crystal surface. The finding could have implications for bio-imaging and biomolecular detection, OLEDs, and investigations...
Light Stopped for a Minute
DARMSTADT, Germany, Aug. 7, 2013 — At 186,000 miles per second, the speed of light is unparalleled, so slowing it down, let alone stopping it, is a formidable challenge. But physicists in Germany report using a glasslike crystal to stop light for about one minute, which could have...
3-D Images Created From a Single Lens
CAMBRIDGE, Mass., Aug. 6, 2013 — A computational method called light-field moment imaging creates 3-D images using a single, stationary lens, a discovery that could have implications for medical imaging and even future 3-D displays.
IR Tomography Goes Full Color
BERKELEY, Calif., Aug. 6, 2013 — Combining Fourier transform infrared (FTIR) spectroscopy with computed tomography creates a non-destructive, 3-D imaging technique providing full-color, molecular-level chemical information of unprecedented detail on biological and other samples...
Light Moves, Molds Gels
PITTSBURGH, Aug. 5, 2013 — Researchers at the University of Pittsburgh used light to reconfigure hydrogels and induce self-sustained motion. This biomimetic behavior in a non-living organism could have significance for a host of applications in the medical arena, including...
Baby breathes easy with laser-printed air tube
ANN ARBOR, Mich. – When a child stops breathing, it’s a mother’s worst nightmare. And a doctor’s first instinct is not to reach for a laser to solve the problem. But in a recent extreme case, a laser-based process did indeed save the day. April...
Cradle turns iPhone into biosensor
CHAMPAIGN, Ill. – A unique cradle and app for the iPhone use the phone’s own camera and processing power to create a handheld biosensor capable of detecting any kind of biological molecules or cells. The system, developed at the University of Illinois, could...
Electronic components speed spectroscopy
GAITHERSBURG, Md. – Using electronic components could make atmospheric-gas measurement more even and 1000 times faster than with conventional techniques, and could advance greenhouse-gas measurement. Spectroscopy is the most common method for detecting trace gases....
Groups demonstrate electrically driven polariton lasers
WÜRZBURG, Germany, and ANN ARBOR, Mich. – An electrically driven polariton laser – one fueled by electricity instead of light – was demonstrated recently by two separate groups. Optically driven polariton (a mix of photons and excitons) lasers have been demonstrated before, but...
Nanoantennas improve infrared sensing
PHILADELPHIA – Nanoantennas with “slots” that correspond to mid-IR wavelengths are a new way to tune IR light into mechanical action – which could lead to more sensitive IR cameras and more compact chemical-analysis techniques. Existing IR...
Nonlinear media controls light with light
HOUSTON – A variety of nonlinear media, each with tailored optical properties, could be produced using a gold-disk patterning method to perform four-wave mixing. Developed at Rice University, the method is the first to produce materials that can achieve...

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