Researchers successfully sent highly accurate clock signals across hundreds of kilometers using optical fiber links, overcoming challenges to transmit stable signals over long distances. The achievement brings scientists closer to redefining the second and enabling ultra-precise navigation and other applications.
Researchers develop a small, flexible endoscopic device with a femtosecond laser 'scalpel' that removes diseased tissue while leaving healthy cells untouched. The device boosts imaging resolution by 20% and is five times smaller than the team's first prototype.
Researchers from the University of California, Berkeley, have designed a solar cell that emits light as well as absorbs it, increasing voltage and efficiency. The new design broke the efficiency record, achieving 28.3%, with potential implications for all types of solar cells.
A new optical imaging system uses speckle imaging to measure differences in light bouncing off red blood cells, identifying cells infected with malaria parasites. The technique delivers results in under 30 minutes with high accuracy and low cost, promising to revolutionize malaria diagnosis.
Researchers have found a promising candidate for plasmonic materials in titanium nitride, enabling the transportation of plasmons and directing optical signals on the nanoscale. This discovery could lead to faster and more efficient optoelectronic devices with unprecedented speed and efficiency.
Researchers have developed a 'thermal' approach to invisibility cloaking that isolates or cloaks objects from sources of heat. The method uses transformation optics to control thermal diffusion, allowing for the shielding of areas from heat and the concentration of heat in small volumes.
The Optics Express Focus Issue on Modular Ultrafast Lasers showcases state-of-the-art developments in femtosecond lasers, enabling new applications in biology, medicine, chemistry, and energy research. Key findings include the generation of broad-bandwidth frequency combs for precision metrology and spectroscopy.
Researchers at UC Berkeley have discovered that graphene is an excellent active media for optical modulators, promising faster data transmission and computing. The graphene-based modulators can perform at speeds up to 10 times faster than current technology, enabling applications such as high-definition streaming on smartphones.
Japanese researchers have developed a spectrally efficient, scalable elastic optical transport network architecture called SLICE to address growing IP traffic demands. The technology enables adaptive spectrum allocation, providing significant savings of network resources and increased capacity.
A German research team has created a record-speed wireless data bridge that transmits digital information up to 20 billion bits per second, surpassing current state-of-the-art systems. The bridge operates at 200 GHz and remains operational under adverse atmospheric conditions.
Photonic interconnects promise to revolutionize computer architecture with ultra-high communication bandwidths and extreme energy efficiency. HP Labs is studying the shift to light-based interconnects to build next-generation IT solutions.
Researchers at the University of Washington have developed a new method to stimulate neurons in the brain using quantum dots. This technique allows for precise control over cell activity and could provide insights into disease processes and potential treatments for conditions like Parkinson's disease, Alzheimer's, and severe depression.
A research team has developed a handheld, mobile device capable of rapidly detecting brain injuries such as hematomas in patients with traumatic brain injuries. The device uses near-infrared imaging to detect changes in blood volume and can be used for quick screenings before more expensive imaging techniques.
Researchers at Indiana University have developed a method to measure microscopic changes in cone cells using optical coherence tomography (OCT) phase differences. They found the outer segments of cone cells grow at a rate of about 150 nanometers per hour, which is significantly faster than human hair growth.
A Vanderbilt University team has created a new method to optically assess the response of cancer cells to a specific drug, using light to visualize metabolic pathways. The technique could enable real-time monitoring of tumor response and help doctors make timely treatment decisions.
Researchers have developed a precise method to create microresonators in optical fibers, enabling the creation of 'Whispering Gallery' structures that can store tiny packets of light. This innovation has the potential to revolutionize computing with faster calculations and more efficient memory storage.
The Focus Issue on Digital Holography and 3-D Imaging presents recent breakthroughs in digital holography, enabling non-invasive biomedical imaging and applications in structural analysis. Novel techniques such as compressive holography and lens-free tomographic microscopy are showcased, advancing 3-D display technologies.
The Optical Society published a Focus Issue on Liquid Crystal Materials for Photonic Applications, showcasing breakthroughs in reversible phototuning of lasing frequency and polymer-stabilized blue-phase liquid crystals. These advancements have significant implications for next-generation displays and optical devices.
Researchers developed a method to characterize the optical properties of ZnO nanoparticles, allowing them to assess their safety in sunscreen. The study found that nanoparticles did not penetrate beneath the stratum corneum, the topmost layer of skin, after being applied and washed off.
Scientists have created a novel combination of additives that enable gelatin to mimic the acoustical and optical properties of soft tissue in humans. The resulting tissue 'phantoms' can be used to test photoacoustic and ultrasonic imaging technologies, which are increasingly being used in clinical applications.
Researchers developed a new method using two-photon polymerization with multiple foci to create finely detailed structures, such as tissue scaffolds and microneedles, more quickly than traditional techniques. This enables faster production of microscale medical devices for tissue engineering applications.
Researchers have developed a fast new method for mapping blood vessels that could aid cancer research by analyzing the vascular network of organs in less than two days. The technique uses knife-edge scanning microscopy to create detailed 3D maps of blood vessels, from arteries and veins to smallest capillaries.
Using Fourier Transform Light Scattering (FTLS), the UIUC team analyzed light scattering patterns from RBCs to identify healthy cell signatures. The Born approximation model enabled accurate detection of misshapen cells in just a few seconds.
Using ultra-short pulses of ultraviolet light, scientists increase the number of right-side-up antibodies in QCM sensors, more than doubling their sensitivity. This breakthrough opens up new possibilities for research using this type of sensor.
Researchers are developing cutting-edge solutions for renewable energy and environmental research, including thousands of sensors to monitor climate change, novel LED designs that boost efficiency, and thinner solar cells. These innovations aim to make space safer by tracking space debris and improve energy sustainability.
Collective phenomena in nanoscale structures have applications in light generation, optical sensing and information processing. Researchers explore these effects to engineer novel devices with custom-designed optical, electronic and mechanical characteristics.
Researchers at Duke University propose harnessing gold nanoparticles' unique optical properties to flag brain tumors. The team synthesized rod-shaped nanoparticles with varying sizes, which displayed different optical properties and could be tuned to scatter specific light frequencies.
Researchers at Yale University created two lasers that use short-range order to control light, producing brilliant colors like a bluebird's wings. The bio-inspired technology could lead to more efficient solar cells and long-lasting paint, with potential applications in cosmetics and textiles.
Cornell researchers demonstrate ability to cloak a singular event in time using light and optical fibers. A brief bubble in the light flow conceals the fact that an event occurred, lasting only a fraction of a second.
The Optical Society's Applied Optics journal publishes a special focus issue on Light and Color in the Open Air, featuring striking images of natural optical phenomena such as rainbows, fog bows, coronas, sprites, and mirages. The accompanying online photo gallery showcases the beauty and science behind these phenomena.
Scientists have confirmed the existence of triple rainbows using photographic evidence and a new meteorological model. The discovery was made possible by a professor's guidelines that showed how to find tertiary rainbows, which are rare because they require specific conditions to appear.
A team of researchers transformed everyday iPhones into medical-quality imaging and chemical detection devices, enabling doctors to diagnose blood diseases in developing nations. The modified phones can perform detailed microscopy and spectroscopy, transmitting real-time data for further analysis and diagnosis.
The journal Optical Materials Express has published a special Focus Issue on Nanoplasmonics and Metamaterials, highlighting recent advances in nano-optics. Researchers have successfully developed new optical materials and nanofabrication techniques to control light fields beyond the diffraction limit.
A new hybrid imaging device combining photoacoustic imaging, optical coherence tomography, and pulse-echo ultrasound has been developed to diagnose early-stage ovarian cancer. The device was tested on both pig and human ovarian tissue, correctly identifying malignant tumors in initial tests.
A team of researchers evaluated the effect of low-power Terahertz radiation on mouse stem cells, finding temperature increases were minimal and heat shock protein expression was unaffected. However, certain genes showed clear effects from THz irradiation, suggesting further investigations are needed to generalize findings.
Using a single UV laser pulse, researchers can now zap away biological tissue at multiple points simultaneously. This technique allows scientists to isolate specific cells and observe their shape dictated solely by internal forces. The method has potential applications in developmental biology and bioengineering.
A new imaging technique allows researchers to assess nerve damage and healing in live patients, providing a non-invasive method for diagnosing nerve injuries. The technique uses lasers to create images of individual neurons' insulating sheaths, revealing the extent of myelin loss and recovery.
A new sensor technology has been developed to detect specific proteins in human blood, promising faster and more affordable diagnostics for diseases such as cancer and diabetes. The sensor uses aptamers, custom-made molecules that can latch onto target compounds with high specificity and accuracy.
Researchers have developed a compact, lightweight microscope that uses holograms instead of lenses for dual-mode imaging. The device is portable, inexpensive, and can be used for field diagnostics in developing countries, testing of water quality, and food contamination.
Researchers have made significant breakthroughs in femtosecond laser writing, enabling the creation of new optical materials and devices. Key findings include the importance of temperature in material structuring and the potential for precise control of induced birefringence.
Scientists at Tufts University have successfully used cellular laser microsurgery to track the migration and regeneration of melanocytes in a live organism. The technique could lead to new research avenues in wound repair, regenerative medicine, and cancer studies.
A research team from Yale University has successfully achieved two-color stimulated emission depletion (STED) microscopy in living cells, overcoming previous challenges in labeling target proteins. The breakthrough enables resolutions of 78 nanometers and 82 nanometers for sequential scans of two proteins in living cells.
Researchers developed a near-infrared imaging system using optical coherence tomography (OCT) that can reliably distinguish between low-risk and high-risk pancreatic cysts. The system achieved a success rate close to microscope-assisted examinations, showing its potential as a future diagnostic tool for pancreatic cancer.
Researchers explore ways to boost fiber optic communication capacity to meet growing internet traffic demands, including space-division multiplexing and mode-division multiplexing. Studies aim to increase fiber capacity by up to seven-fold, enabling exponential growth in optical communication systems.
Researchers have developed a new technique to manipulate surface plasmons in real time, enabling the creation of ultra-small-scale optoelectronic devices and systems. This innovation allows for on-the-fly control and flexibility in nano-system design and manufacture.
Researchers at MIT have developed a new high-speed 3D imaging system based on optical coherence tomography (OCT) technology, enabling real-time visualization of microscopic features in the esophagus and colon. The system promises to improve cancer screening by detecting pre-cancerous changes and guiding endoscopic therapies.
Researchers successfully imaged rod photoreceptors in the living human eye for the first time, revealing cellular structure with unprecedented detail. This breakthrough enables earlier diagnosis and treatment of degenerative eye disorders, potentially leading to more effective sight-saving interventions.
Engineers at Vanderbilt University created a 'spongy' silicon biosensor that detects small molecules with high sensitivity. The new sensor's porous structure increases its surface area, allowing it to capture more molecules than traditional sensors.
Green UV sterilization uses LEDs to safely disinfect food and water without mercury. MEGa-rays enable precise detection of nuclear threats by penetrating through lead and thick containers. Researchers also develop a full 3D invisibility cloak in visible light.
The new journal, Optical Materials Express, launched by OSA, explores the intersection of optics and materials science, offering rapid online publication and open-access features. The inaugural issue includes research on metamaterials, microlasers, and chiral optical materials.