Articles tagged with Light Beams
Engineers at the University of Wisconsin-Milwaukee have developed novel optical fibers that can transmit high-quality images, rivaling those of current commercial endoscopy imaging fibers. The fibers utilize a unique architecture that traps multiple beams of light, resulting in improved resolution and contrast.
Researchers at DESY's PETRA III light source have created a 4.3nm-wide X-ray beam, ten thousand times thinner than a human hair, using a Fresnel lens made from nanometre-thin layers.
Researchers use nanoplasmonics to modulate light on the nanometer scale, but controlling the beam's direction is challenging. A bubble lens overcomes this issue by reconfiguring its location, size, and shape to focus or deflect the light beam.
The TU Vienna has successfully developed a light transistor that can be controlled by an electrical potential, enabling efficient miniaturization and use in optical computers. This breakthrough utilizes terahertz radiation and the Faraday effect to rotate the polarization direction of light.
A new microscopy technique developed by NIST researchers uses cathodoluminescence to image nanoscale features with high resolution. The technique combines the benefits of optical and scanning electron microscopes, evading traditional limitations such as diffraction and sample preparation requirements.
A NASA team has built a first-of-a-kind testbed to simulate pulsar-on-table technology for X-ray navigation. The Goddard X-ray Navigation Laboratory Testbed will validate advanced technologies for the NICER/SEXTANT mission, which aims to study neutron star interior compositions and demonstrate pulsar-based navigation.
Researchers at the University of Michigan developed a new reflective color display technology that can lock in color and reduce power consumption. The technology uses nanoscale metallic grooves to funnel light into specific wavelengths, resulting in vibrant colors that remain true regardless of viewing angle.
Researchers at Stanford University School of Engineering have designed a novel light aperture that can stably trap objects as small as 2 nanometers using plasmonic technology. The device uses a silver and silicon dioxide structure to focus light and create a powerful, concentrated beam that can trap tiny particles.
Researchers enhance local electric fields around nanorods using metal grooves to improve surface-enhanced Raman scattering (SERS) intensity. The nanorod-groove system produces larger electric fields than individual nanorods or traditional systems, increasing SERS sensitivity and accuracy.
Scientists at Berkeley Lab and UC Berkeley have made the first direct observations of distinctly quantum optical effects - amplification and squeezing - in an optomechanical system. The findings point toward low-power quantum optical devices and enhanced detection of gravitational waves.
Researchers at Disney Research developed a new virtual ray lights technique to simulate realistic smoke, dust, and participating media effects. The approach leverages photon beams to generate images, reducing the need for particles and increasing efficiency.
The new technology allows approximately 90% of unpolarized light to be polarized and used by the projector, reducing heat generation and enabling more compact designs. This innovation has significant implications for LC projectors, including longer battery life and increased brightness with reduced power consumption.
Researchers created first artificial molecules whose chirality can be rapidly switched from right-handed to left-handed orientation using a beam of light. This discovery holds huge possibilities for terahertz technologies, including biomedical research and ultrahigh-speed communications.
A multi-national team has developed a system to transmit data at dramatically increased speeds using twisted beams of light, with rates of up to 2.56 terabits per second. This technology could be used for high-speed satellite communication links and fiber optic cables.
The JQI switch can steer a beam of light from one direction to another in 120 picoseconds using only 140 photons, requiring minimal power. This achievement marks a significant step toward creating ultrafast and low-energy on-chip signal routers.
Several critical NASA components are being tested to ensure the success of the James Webb Space Telescope. The OSIM and BIA instruments will simulate the telescope's science cameras and spectrographs, while also verifying their functionality in cryogenic temperatures. This testing program is essential for the mission's success.
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.
Researchers have discovered a way to prevent light signals from reflecting backwards on silicon chips, enabling faster data transfer rates and lower costs. The breakthrough could lead to the development of integrated photonic chips that replace electronic chips in information technology.
Researchers at the National University of Singapore have invented a graphene-based polarizer that can broaden the bandwidth of prevailing optical fibre-based telecommunication systems. This innovation uses graphene to convert light beams into polarized light, enabling multiple-channel high-speed optical communications.
The new microscope allows researchers to study the dynamic inner lives of living cells without damaging them. It uses a combination of structured illumination and two-photon microscopy to create high-resolution, three-dimensional images of cellular landmarks.
Researchers at Tel Aviv University discovered that the hornet's body shell can harvest solar power due to its unique structure. The yellow and brown stripes on the abdomen enable a photo-voltaic effect, converting solar radiation into electric energy.
Researchers at EPFL have discovered an all-optical transistor that controls the flow of light using a novel optical microresonator. The device enables a strong 'control' laser to turn on or off a weaker 'probe' laser, opening up new possibilities for telecommunications and photonics.
Researchers at Northwestern University have developed a new method called beam-pen lithography, which uses tiny beams of light to draw patterns on surfaces. This technology offers a means to rapidly and inexpensively make and prototype circuits, optoelectronics, and medical diagnostics.
Researchers at Tel Aviv University have discovered a way to control the curvature of Airy beams, which can be used to sort molecules according to size or quality. This technology has immediate applications in the pharmaceutical and chemical industries.
Scientists at ESCPI conducted an experiment to focus light through opaque materials and detect objects hidden behind them. They used a numerical model called a transmission matrix to tailor a beam of light specifically to pass through the material and focus on the other side.
Researchers create photoswitch composed of dithienylethene, which paralyzes C. elegans worms with ultraviolet light and reverses paralysis with visible light
Researchers create photoswitch that triggers and reverses paralysis in C. elegans worms using ultraviolet and visible light. The study demonstrates the potential of such 'photoswitches' in medicine and research applications.
Researchers at Cornell University used a tiny beam of light to move a silicon structure up to 12 nanometers, switching its optical properties. This technology could have applications in MEMS and MOMS, where it might be useful for creating tunable filters or preventing silicon parts from sticking together.
Researchers have implemented topological photonic crystals that completely prohibit light wave back-reflections, allowing microwave light to propagate in a one-way structure. This concept may lead to reduced internal connections and improved performance in light-driven circuits.
Researchers at UCSF have developed a way to control mammalian cells using light, enabling the creation of 'microscopic robots' that can follow light beams or stop on command. This breakthrough offers new possibilities for cancer and cardiovascular research, as well as potential applications in nerve growth and repair.
Researchers have developed a novel metamaterial device that guides electromagnetic waves around objects, including the corner of a building or the eastern seaboard, without losing direction. The device uses a composite metamaterial to deliver precise instructions, allowing beams to continue traveling in a straight line.
A Yale team has discovered a repulsive light force that can be used to control components on silicon microchips, paving the way for faster and more efficient nanodevices. The researchers found that by manipulating out-of-phase light beams, they could create a controlled repulsive force with tunable intensity.
Researchers at NIST and Maryland have demonstrated a 'quantum buffer' technique to control data flow inside a quantum computer, potentially speeding up decryption and database search tasks. The technique involves delaying entangled images by up to 27 nanoseconds, which can be useful for quantum information-processing systems.
Researchers discovered that adding a small notch to the disk edge provides a single outlet for laser light to stream out, increasing the speed of computers and telecommunication networks. The optimal geometry and boundary pumping parameters can aid in designing better-collimated microlasers.
Researchers at MIT have developed a novel technique to measure the strength of protein bonds using optical tweezers. The technique allows for precise measurement of forces holding proteins together, which is crucial in understanding cell structure and function.
Researchers have created a unique computer model that can bend electromagnetic radiation around an object, making it appear invisible from close range. This breakthrough uses light waves rather than beams, and could potentially be used in military technology such as fighter jets and submarines.
Scientists successfully teleported the state of a light pulse to an ensemble of 10^12 atoms, marking the first transfer between objects of different nature. The experiment has significant implications for quantum computing and quantum cryptography.
Researchers at MIT developed mesh-like webs of light-detecting fibers, measuring direction, intensity, and phase of light without lenses or filters. The fiber constructs can generate rough images of objects, providing a new approach to situational awareness and interactive technology.
Researchers at UCSB have made a significant breakthrough in quantum physics, enabling the transmission of information 100 times faster than current methods. The discovery involves using a free-electron laser to modulate light beams and create a new type of cross modulation, allowing for fast channel changes.
Researchers at Vanderbilt University developed an ultra-fast optical shutter with a record-breaking speed of 40 picoseconds, enabling high-speed imaging applications. The new technology uses femtosecond laser pulses to freeze light at the molecular level, opening doors for breakthroughs in fields like biology and materials science.
Researchers found a defect in quantum dot creation that hinders scientific experimentation and propose tweaking light beam or pulse duration to overcome the issue. The study also sheds light on controlling electron spin, potentially leading to faster electronic devices.
A team of researchers at Cornell University has developed a compact, all-optical switch on silicon that can control light signals in real-time. This innovation paves the way for high-speed optical routing in fiber-optic communications, eliminating the need for conversion between electrical and optical signals.
Researchers at Imperial College London have discovered a way to channel and focus light beams on a chip using artificial materials with tiny grooves and holes. This breakthrough could revolutionize the design of the first optical computers, which struggle to overcome constraints due to the need for efficient wire replacement.
The NWO/Spinoza Award is presented to four Dutch scientists for their groundbreaking research in mathematics, computer science, and medicine. Professor Henk Barendregt and Els Goulmy receive awards for their work on lambda calculus and minor histocompatibility antigens, respectively.
Researchers have developed a photosensitive silicone intraocular lens that can be adjusted after surgery to eliminate refractive errors. The lens uses low-power light to make precise power adjustments, offering a potential alternative to LASIK surgery for severe myopia and farsightedness.
Gardner's book examines how contemporary writers are expanding and testing the idea of 'fallen poetics' explored by Dickinson. The author analyzes works by Robinson, Graham, Wright, and Howe, among others, to understand their responses to human limits and the opening out of human responsiveness.
The Office of Naval Research has funded the development of a Tactical Vectoring Equipment (TVE) display, a simple array of six lights with Fresnel lenses that projects red or green light based on viewing angle. This system aims to improve navigation and communication for surface ships behind carriers in low visibility conditions.