Articles tagged with Light Beams
A new imaging method has been developed that can capture high-resolution images of photoreceptors in the human eye, overcoming resolution limitations imposed by light diffraction. The technique uses annular pupil illumination and sub-Airy detection to enhance microscopy techniques for earlier detection and treatment of eye diseases.
Researchers at Texas A&M University developed a deep-learning algorithm that can denoise images to reveal otherwise invisible details. The algorithm, called global voxel transformer networks (GVTNets), uses adaptive receptive fields to capture information in the overall image structure.
Researchers from Utrecht University and TU Wien develop a method to calculate optimal light waves for precise measurement of invisible objects in complicated environments. This technology has potential applications in microbiology, computer chip production, and nanometer-scale imaging.
A team of researchers from the University of Sussex created a sound projector that can deliver spatial sound at a distance by forming a beam of audible sound. The system uses a portable speaker, metamaterial lenses, and tracking hardware to track users and send sound directly to them.
A new device created by researchers at the University of Texas at Austin can overcome challenges like bad weather to deliver more secure, reliable communications. The chip operates in mid infrared light spectrum, allowing signal to penetrate through clouds, rain and other weather conditions without significant loss.
uOttawa researchers, in collaboration with Israeli scientists, have created optical framed knots that can be used to distribute secret cryptographic keys. These knots provide a platform for topological quantum computations and can be used to encrypt information.
Researchers have discovered a new way to observe color through the scattering process, which combines with optical interference to create bright colors. The findings, published in Advanced Optical Materials, could have practical applications in sensing technology and security devices.
Researchers have developed an underwater wireless system that supports internet services using visible light signals, allowing for faster and more reliable data transmission. The Aqua-Fi prototype demonstrated a maximum data transfer speed of 2.11 megabytes per second and an average delay of 1.00 millisecond.
Researchers at KAUST are developing a system that can transmit both light and energy to underwater devices, enhancing sensing and communication in the ocean. This technology has potential applications in climate change research, seismic activity detection, and underwater search and rescue operations.
Researchers at Pohang University of Science & Technology developed a multifunctional meta-hologram that can create different hologram images depending on the direction of light incident on the device. The new meta-hologram demonstrated diffraction efficiency higher than 60% and high-quality images were observed.
Researchers developed a new method using interferometry to visualize the movement of millions of molecules in 3D, providing insights into biological processes. The technique distinguishes between flow and diffusion movements, enabling the study of virus-cell interactions and cellular dynamics.
A team of scientists at ETH Zurich has developed a novel electro-opto-mechanical switch that can assess surroundings quickly and recognize people and obstacles. The switch uses plasmonics technology, which enables fast and compact switching with low losses.
A new optical switch developed by the NIST team can route light at speeds of 20 billionths of a second, making it ideal for quantum computing and high-performance computing. The device uses a miniature racetrack to redirect light signals with low signal loss.
Researchers have successfully created a new one-way street for light by cooling photons to a Bose-Einstein condensate. This process causes the light to collect in optical valleys from which it can no longer return, effectively irreversibly dividing the light beam. The findings could be of interest for future quantum communication.
Ghost imaging allows forming images with lower light levels but has been limited to stationary objects due to blurring from movement. Researchers developed a new method combining blurry image information with object location data to capture high-quality images of moving objects using ghost imaging.
The system designs and 3-D prints complex robotic parts called actuators that are optimized according to an enormous number of specifications. It demonstrates the ability to fabricate actuators showing different images at different angles, such as Vincent van Gogh and Edvard Munch portraits.
Researchers at University of Queensland developed a light beam device that can split light into multiple modes, increasing information density and potential for faster internet speeds. The device has applications in medical imaging, astronomy, and communication, enabling higher-quality images with greater detail.
Researchers from EPFL developed a new holographic technique that can encode quantum information in a nanostructure, enabling high-resolution imaging of electromagnetic fields and manipulating the quantum properties of free electrons. This breakthrough has significant implications for quantum computing applications.
Researchers create a 240-by-240 array of microscopic 'traffic cops' that can control light beams faster and more efficiently than ever before. The new photonic switch has the potential to transform how information travels through data centers and artificial intelligence networks, overcoming limitations of current electrical switches.
A new measurement approach could create the first CT measurement standards connected to the International System of Units (SI), allowing for more precise calibration and comparison among scanners. This could lead to improved communication among doctors, more efficient diagnosis, and less costly treatment.
Researchers at ITMO University propose a new approach to creating tractor beams using hyperbolic metasurfaces, which can capture particles and cells. The study shows that these materials have the potential for practical applications in experiments and traps.
University of Adelaide researchers have created a powerful tractor beam that traps atoms in a microscopic hole at the center of an optical fiber. This breakthrough opens up new opportunities for quantum experiments and secure communications.
Researchers developed a new optical gyroscope that detects phase shifts 30 times smaller than previous systems, enabling miniaturization to a chip smaller than a grain of rice. The Sagnac effect relies on detecting differences between two beams traveling in opposite directions.
A team of Japanese scientists has demonstrated a method to produce novel light beams from synchrotron radiation, enabling the generation of X-ray vector beams. This breakthrough could pave the way for new applications in X-ray diffraction, scattering, and absorption/emission spectroscopy.
Researchers found two opsin variants in the retina of flashlight fish, activated by low-intensity blue light, which influences behavioral responses. The study suggests that bioluminescence is processed and used to adjust behavior in this species.
Terahertz radiation can be used for various applications, including airport security checks and material analysis. Researchers at TU Wien have developed a technique to shape these beams using a precisely calculated plastic screen produced on a 3D printer, resulting in precise control over the beam's shape and direction.
Researchers at ITMO University have created a new type of curved light beam called a photonic hook, which can improve optical system resolution and control nanoparticles. The technique uses a dielectric particle to bend the light beam, allowing for the manipulation of individual cells, viruses, or bacteria on a nanoscale.
Researchers developed a tiny spectrometer that can be easily integrated into smartphones, allowing for precise measurements of light absorption and reflection. The sensor has applications in gas detection, motion sensing and more, with potential to become as important as the camera.
Researchers have confirmed that the average path length of light in opaque media is always the same, regardless of transparency. This result has implications for our understanding of wave propagation in disordered media and has potential applications in various fields.
Researchers have discovered a new way to simulate Einstein's theory of general relativity in electronic systems, enabling the creation of 3D electron lenses and electronic invisibility devices. The discovery uses Weyl metamaterials, which combine ideas from solid-state physics, particle physics, and cosmology.
Researchers at the University of New South Wales have successfully detected polarised light from a rapidly spinning star for the first time. Using a highly sensitive piece of equipment, they measured Regulus' spin rate of 96.5% of its break-up velocity, equivalent to 320 km/s.
Researchers have synthesized new liquid-crystal photochromic polymers with comb-shaped molecules that change molecular orientation under external fields, forming coatings and films. These polymers exhibit photoisomerization and photo-orientation processes, allowing for control over phase behavior and optical properties.
A new non-invasive approach using polarized light can help surgeons identify nerves in real-time, minimizing nerve damage and improving surgical outcomes. The technique has been shown to outperform visual inspection with an accuracy rate of 100% compared to 77%.
A new technology using photoswitch molecules allows for the creation of 3D light structures viewable from 360 degrees, with potential applications in biomedical imaging, education, engineering, and entertainment. This discovery could also improve medical diagnosis by providing real 3D images from MRI scans.
A team at MIT has created a system that can manipulate particles ranging from molecules to bacteria-sized objects using ordinary light. The researchers engineered asymmetrical particles, called Janus particles, which respond to the orientation of the beam and create forces that set them spinning uniformly.
Physicists have developed optomechanical beams that can act as inherently accurate thermometers or optical shields, exploiting the principles of quantum physics. These microscopic beams have potential applications in biology, chemistry, electronics, and chip-based temperature sensors that never need calibration.
Researchers developed an adjustable optical microprobe to analyze and control deep brain regions, enabling minimally invasive devices for diagnosis and treatment of neurological disorders. The microprobe uses optogenetics to activate or inhibit neurons with tunable light intensity, color, and frequency.
A team of MIT researchers has developed a new approach to deep learning computations using light instead of electricity, potentially improving speed and efficiency for certain applications. The new programmable nanophotonic processor uses multiple light beams to carry out complex calculations with zero energy and near-instant results.
Researchers have developed a new solution to tracking objects hidden behind scattering media by analyzing fluctuations in optical 'noise' created by their movement. The approach can advance real-time remote sensing for military and biomedical applications.
Researchers are developing micro-optical systems to efficiently rearrange starlight and enable high-precision measurements of cosmic objects. The technology targets use on large telescopes to search for earth-like planets and determine atmospheric composition.
Researchers have developed a new technology using light to continuously monitor a surgical patient's blood, providing real-time status during life-and-death operations. This technology has the potential to replace the need for doctors to wait while blood is drawn and tested, potentially saving lives in intensive care settings.
The team of Professor Gerd Ulrich Nienhaus has refined the STED nanoscopy method to suppress background efficiently, resulting in enhanced image quality. This new method, named STEDD, is particularly advantageous for quantitative data analysis of three-dimensional molecules and cell structures.
Researchers discovered a material exhibiting macroscopic quantum effects, shedding light on the relationship between classical and quantum worlds. Topological insulators may hold the key to understanding this fundamental scientific riddle.
Researchers at ANU and UQ have developed a cloning method that produces higher-quality quantum clones than existing methods, with a success rate of about 5%. This breakthrough could enable ultra-secure encryption over long distances, overcoming the limitations of current quantum communication systems.
Researchers have developed a new technology called DarkLight that enables visible light communication even in dark environments. The technology uses ultra-short, imperceptible light pulses and can transmit data over short distances without being blocked by obstacles.
The study found that higher order modes trap and move particles more rapidly than fundamental modes, with the collective particle speed slowing down when more particles are added. The results also showed that interparticle distances were smaller in higher order modes.
Scientists have created a new solid 3D superlens using nanobeads, enabling the view of previously invisible details on surfaces. The technology adds 5x magnification to existing microscopes, opening up new possibilities for biology and medicine.
Researchers developed a micro-scale twisted optics technique to store more information in light, enabling faster data transmission. The method uses angled light and strategically placed germanium layers to guide waves unidirectionally through a micro-ring.
Researchers have discovered a new way to manipulate plasmons on graphene and TMDs using circularly polarized light, enabling separation of particle streams without magnetic fields. This breakthrough could lead to novel electro-optical devices and applications in chip-scale optical isolation.
Researchers have developed nanoparticles that release a drug when exposed to near-infrared light, potentially reducing side effects of tumor treatments. The on-demand delivery system also enables agents for imaging and diagnostics, offering a promising approach to targeted medicine.
Researchers at Harvard have created the first on-chip metamaterial with a refractive index of zero, allowing for infinitely fast light manipulation. This discovery has exciting applications in quantum computing and integrated optics.
Researchers at University of Chicago and Pennsylvania State University have discovered a method to 'paint' quantum electronic circuits using beams of light, allowing for rewritable devices without nanofabrication. This breakthrough enables faster and easier experimentation with fragile quantum materials.
Researchers create interaction between single photon and rubidium atoms, enabling new field of optics. This breakthrough advances development of quantum computers by demonstrating useful ways to get photons to interact with each other.
Researchers at KIT created a 12.5-micrometer-long Mach-Zehnder modulator that converts digital signals into optical signals at speeds of up to 108 gigabits per second, promising a solution for data centers' power consumption and speed limits.
Researchers at University of Rochester find that a classical beam of light can fail Bell's Inequality test if entangled, suggesting that the boundary between quantum and classical worlds is not as clear-cut as thought. The study reveals that some features of the real world require entanglement, a key ingredient of quantum physics.
The researchers at Aalto University have demonstrated the first realization of absorbers that do not reflect light over a wide range of frequencies. These absorbers are able to absorb and sense light of desired frequency spectra while being invisible and undetectable at other frequencies.
Researchers at ORNL have developed a technique that uses quantum correlated beams of light to overcome the fundamental detection limit of microcantilever-based sensors. This results in a 60% error reduction, enabling higher contrast imaging and detection of lower concentrations of particles.
Researchers at UTEP and UCF developed a new method to steer light beams through tighter curves without losing energy, paving the way for ultra-fast data-transmission devices in smaller spaces. This technology has the potential to revolutionize next-gen computing by enabling thousands of times faster data transmission.
Researchers at UNC-Chapel Hill have developed CLIP, a 3D printing technology that manipulates light and oxygen to fuse objects in liquid media. This method allows for the creation of commercially viable objects with feature sizes below 20 microns, making it possible to produce parts 25-100 times faster than traditional technologies.
Researchers at MIT demonstrate that quantum sensors can outperform classical systems even when entanglement breaks down due to environmental influences. The study shows that correlations between entangled beams remain strong enough to improve signal-to-noise ratio, leading to increased sensitivity.