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Research & Technology News
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 with no need to stain or alter the specimens.
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...
Optical gratings could make quantum tech portable
GLASGOW, Scotland, and LONDON – A microfabricated chip that produces ultracold atoms could lead to portable, ultraprecise clocks and quantum sensors. Many of the most accurate measurement devices, including atomic clocks, work by observing how atoms transfer between individual...
Spray-on flat lens works in the UV
GAITHERSBURG, Md. – A new, easily fabricated metamaterial-based flat lens that bends and focuses UV light could improve photolithography, nanoscale manipulation and manufacturing, and even high-resolution 3-D imaging, say its developers, scientists working at the...
Universal Light Absorption Law Discovered in 2-D Semiconductors
BERKELEY, Calif., Aug. 1, 2013 — A simple law of light absorption observed in 2-D semiconductors could make exotic new optoelectronic and photonic technologies a reality.
Speed Limit for Electrical Switching Revealed
MENLO PARK, Calif., July 31, 2013 — An optical laser pulse has shattered the ordered electronic structure in an insulating sample of magnetite, switching the material to electrically conducting in a picosecond (one-trillionth of a second). The discovery could lead to faster, more...
Nanocrystals Could Inform Nanocomposite Design
BERKELEY, Calif., July 30, 2013 — An optomechanical sensing technique that uses fluorescent tetrapod quantum dots to precisely measure the tensile strength of polymer fibers with minimal impact on their mechanical property could pave the way to stronger nanocomposite designs.
Tweaks Turn Microscope into Billion-Pixel Imager
PASADENA, Calif., July 30, 2013 — A method that converts a relatively inexpensive conventional microscope into a billion-pixel imaging system could improve the efficiency of digital pathology and provide robust microscopes to medical clinics in developing countries.
Color-Changing Mechanism Behind Cephalopods Revealed
SANTA BARBARA, Calif., July 29, 2013 — The mechanism responsible for the dramatic color changes in underwater creatures such as squid and octopuses has been revealed. Understanding how cephalopods change color could lead to new approaches to making tunable filters and switchable photonic...
Ultrafast Laser Researcher Wins LIA Schawlow Award
ORLANDO, Fla., July 29, 2013 — Ultrafast laser research pioneer Dr. Ursula Keller has been named the first female recipient of the Laser Institute of America’s (LIA) Arthur L. Schawlow Award.
Laser-Controlled Switch Turns Blood Clotting On, Off
CAMBRIDGE, Mass., July 26, 2013 — Laser-controlled gold nanoparticles that release DNA molecules to switch blood clotting on and off could help doctors better control blood clotting in patients undergoing surgery, or promote wound healing.
Nanoenhanced Biosensor Detects Single Proteins
BROOKLYN, N.Y., July 25, 2013 — The microcavity biosensor that set a record by detecting the smallest single virus in solution has reached a new breakthrough: detecting a single label-free cancer marker protein. The achievement, which shatters the previous record and sets a new...
OU Awarded Grant to Commercialize Mid-IR Detector
NORMAN, Okla., July 25, 2013 — A University of Oklahoma research team has received a $236,000 applied research grant from the Oklahoma Center for the Advancement of Science and Technology to develop and commercialize IV-VI semiconductor mid-IR detectors for military and...
Perfecting Digital Imaging
CAMBRIDGE, Mass., July 25, 2013 — The best software and video cameras lag behind reality, unable to capture images that look exactly the way our eyes expect them to look. But new research in computer graphics could change all that, advancing artificial vision, 3-D displays and video...
Controlling Genes with Light
CAMBRIDGE, Mass., July 24, 2013 — A single pulse of light can rapidly start or halt the expression of any gene of interest, giving researchers a new tool for better understanding its function.
Solar Steam Sterilizes with Sunlight
HOUSTON, July 24, 2013 — A “solar steam” sterilization system that uses light-harvesting nanoparticles to convert as much as 80 percent of sunlight energy into germ-killing heat could be a boon for more than 2.5 billion people who lack adequate sanitation.
Light Source Links Vitamin D Deficiency to Accelerated Bone Aging
BERKELEY, Calif., July 23, 2013 — Sunshine may be bad for your skin, but it is good for your bones, and now researchers in California and Germany have discovered that a deficiency in vitamin D — the sunshine vitamin — can accelerate premature bone aging by increasing the risk of...
Optical Coatings Take a Leap Forward
VIENNA, and BOULDER, Colo., July 23, 2013 — A novel crystalline coating technique that produces low-loss mirrors could help accelerate progress in the development of lasers for precision measurement applications.
Plasmonics Gives Performance Boost to Polymer LEDs, Solar Cells
ULSAN, South Korea, July 23, 2013 — A new plasmonic material based on carbon dot-supported silver (CD-Ag) nanoparticles, which produce a surface plasmon resonance effect, has boosted the performance of polymer LEDs (PLEDs) and polymer solar cells (PSCs) while keeping their structure...
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