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1,000+ results for "Optics"

Police sketch artist evolves

A new computer program called EFIT-V is being used by European police departments to help witnesses remember and recognize suspects. The software generates multiple faces that evolve based on the witness' memories, increasing identifications of suspects compared to traditional methods.

SourceOptica·DateOct 5, 2009

Diamonds are a laser's best friend

Researchers in Australia have developed the first efficient diamond Raman laser, achieving an efficiency of 63.5%, comparable to existing lasers built with other materials. This technology has potential applications in defense technologies, trace gas detectors, medical devices, and satellite mapping.

SourceOptica·JournalOptics Letters·DateSep 18, 2009

Light at the speed of a bicycle and much more

Advances in optics and photonics are transforming our daily lives with innovations like optical fibers, lasers, and medical imaging techniques. Researchers are now exploring the potential of plasmonics to develop metamaterial-based invisibility cloaks and super-strength solar cells.

Open wide and say 'zap'

Researchers developed a non-destructive way to measure the elasticity of human teeth using lasers, enabling early detection of oral health issues. The new method can help predict emerging dental problems like tooth decay and cavities.

SourceOptica·JournalOptics Express·DateAug 18, 2009

Beyond the looking glass

Chinese researchers have created the first tunable electromagnetic gateway, using transformation optics and ferrite materials to block electromagnetic waves while allowing passage of other entities. The new configuration has optimum permittivity and permeability, making it tunable and remotely switchable.

SourceIOP Publishing·JournalNew Journal of Physics·DateAug 13, 2009

New windows opened on cell-to-cell interactions

Researchers at the University of Oregon have discovered a new class of self-assembling materials that can control colloidal interactions by applying biological molecules from cell membranes. The findings suggest that specially tweaked biological membranes can serve as control knobs to direct materials to specific actions.

SourceUniversity of Oregon·JournalJournal of the American Chemical Society·DateJul 22, 2009

Seeing invisible resin

Researchers at Fraunhofer-Gesellschaft develop a measuring technique to monitor resin distribution during OSB production. The new method uses special optics to record the image of the shavings mat, allowing for continuous measurements during production.

Distinguishing single cells with nothing but light

Researchers at the University of Rochester have developed a novel optical technique called IRAM that enables rapid analysis of single human immune cells using only light. This technique allows for clear differences between two types of immune cells to be seen, providing new insights into cell activation and development.

SourceUniversity of Rochester·JournalApplied Optics·DateApr 1, 2009

Stevens faculty release study on free-space optical communication in Optics Express

Researchers at Stevens Institute of Technology have made significant breakthroughs in free-space optical communication by demonstrating a unique atmospheric effect called scavenging, which improves the system's performance in adverse weather conditions. The study shows that mid-infrared QCL systems can deliver up to 300% greater throug...

SourceStevens Institute of Technology·JournalOptics Express·DateMar 17, 2009

Beauty and grooming science evolves

P&G Beauty & Grooming scientists showcase latest findings on hair, skin, color, and shaving efficacy using advanced science and technology. The studies explore the role of genetics in skin aging, optimize color foundation formulations, and develop new blade technologies for improved shaving comfort.

Laser-sculpted optical devices for future giant telescopes

New research demonstrates how laser-based techniques can create micron-sized light pathways in three dimensions, enabling the detection of faint light from extrasolar planets and galaxies. This technology has the potential to improve the sensitivity and precision of future telescopes, such as the planned European ELT.

SourceOptica·JournalOptics Express·DateFeb 5, 2009

Enhancing solar cells with nanoparticles

Researchers have developed a new method to boost the efficiency of solar cells by using nanoparticles. By scattering light and improving color-specific capture, this approach could significantly improve sunlight conversion rates.

SourceOptica·JournalOptics Express·DateDec 23, 2008

The Green (and blue, red and white) lights of the future

A new paper in Optics Express envisions a future with widespread use of LED lights, offering significant energy savings and environmental benefits. LEDs are predicted to save more than $1 trillion in energy costs over 10 years and lead to substantial reductions in carbon dioxide emissions.

SourceOptica·JournalOptics Express·DateDec 17, 2008

Engineering algae to make fuel instead of sugar

Scientists at the University of California, Berkeley have developed a method to genetically modify microalgae to produce hydrogen and hydrocarbons instead of sugar molecules. This modification allows for more efficient use of sunlight in the photosynthesis process, making it a potential alternative to traditional biofuels.

SourceOptica·JournalOptics Express·DateDec 17, 2008

Using invisibility to increase visibility

Researchers have created a material that can reflect light from all angles, overcoming optical singularities. This breakthrough could lead to the development of perfect cat's eyes and invisibility devices. The discovery is based on transformation optics and has potential applications in wireless technology and radar.

SourceIOP Publishing·JournalNew Journal of Physics·DateNov 27, 2008

Improved spectrometer based on nonlinear optics

A new highly sensitive infrared spectrometer has been developed using nonlinear optics, offering 100 times higher sensitivity than current commercial devices. The device eliminates the need for cryogenic cooling, making it practical for various industrial applications.

SourceOptica·JournalOptics Express·DateNov 12, 2008

Where optics meets medicine

Researchers have developed an animal model to study the effect of small strokes on nearby neurons, finding that blockages can cause significant decreases in blood flow and death of neurons. A potential new tool for brain surgeons is being developed using optical measurements to detect and protect critical areas during surgery.

SourceOptica·DateOct 9, 2008

Argonne scientists peer into heart of compound that may detect chemical, biological weapons

Researchers at Argonne National Laboratory have discovered a new compound that could potentially detect chemical and biological weapons over long distances. The compound, (A)ZrPSe6, was made possible by the unique beamline of the Advanced Photon Source, allowing scientists to analyze its remarkable properties.

SourceDOE/Argonne National Laboratory·JournalJournal of the American Chemical Society·DateSep 26, 2008

'Edible optics' could make food safer

Scientists at Tufts University have demonstrated a new class of sensors combining nanoscale optics with biological readout functions, enabling biocompatible and biodegradable sensing technology. The developed silk-based optical elements can be used to detect harmful levels of bacteria in food and monitor glucose in the blood.

SourceTufts University·JournalBiomacromolecules·DateAug 7, 2008

Laser light may be able to detect diseases on the breath

Researchers have created a new technique using laser light to analyze breath samples, detecting biomarkers for diseases like asthma and cancer. This non-invasive method could provide rapid and reliable health screenings, addressing existing limitations in breath analysis.

SourceOptica·JournalOptics Express·DateFeb 18, 2008

Discovery cuts cost of next generation optical fibers

Scientists have developed a new method to produce hollow-core optical fibres, which could lead to faster and more powerful computing and telecommunications technologies. The breakthrough reduces production time from around a week to just one day, making the fibre superior in virtually every respect to previous versions.

SourceUniversity of Bath·JournalOptics Express·DateJan 17, 2008

IBM reports milestone in silicon nanophotonics

Researchers from IBM, Kyoto University, Northwestern, and the University of New Mexico have achieved significant breakthroughs in silicon nanophotonics. The longest photon lifetime of 2.1 ns was observed in a photonic crystal nanocavity, while advanced microresonators with quality factors over 100 million were demonstrated.

SourceOptica·JournalOptics Express·DateDec 11, 2007

Lighter gas reduces damage to optics in extreme ultraviolet lithography

Scientists have developed a technique to generate light and reduce damage in extreme ultraviolet lithography by adding a lighter gas to the plasma. This reduces the number and energy of xenon ions reaching the collector surface, extending its lifetime while maintaining minimal impact on light production.

SourceUniversity of Illinois at Urbana-Champaign, News Bureau·JournalIEEE Transactions on Plasma Science·DateSep 12, 2007

See what you're spewing as you speed along

Researchers have developed a laser-based device to measure carbon dioxide, carbon monoxide, and methane emissions directly from vehicle exhausts. This technology has the potential to monitor emissions in real-time, enabling drivers to adjust their driving style and reduce pollution.

SourceUniversity of Manchester·JournalApplied Optics·DateAug 5, 2007

Holograms make for better vision tests

Researchers developed a one-step test using holograms to diagnose astigmatic error, a key factor in prescribing glasses. The new technique is simpler and faster than traditional methods, which involve multiple lenses and complex processes.

SourceOptica·JournalOptics Letters·DateJul 5, 2007