Articles tagged with Diffraction
Researchers at Sandia National Laboratories develop a new technology harnessing metals and light colors to create colored X-ray images with unprecedented resolution and accuracy. This enables better identification of materials, defects, and tumor cells, potentially leading to improved medical diagnostics and safer world.
Researchers created a new material platform for non-volatile memories using covalent organic frameworks (COFs) and successfully installed electric-field-responsive dipolar rotors. The COFs' unique sln topology allows the rotors to flip without steric hindrance, enabling high thermal durability up to near 400°C.
Researchers can now study microstructures inside metals, ceramics, and rocks with X-rays in a standard laboratory without needing a particle accelerator. The new technique, lab-3DXRD, enables quick analysis of samples and prototypes, providing more opportunities for students.
The team's achievement marks a significant advance in robotics, allowing for maneuverable robots that can perform up-close imaging and measure forces at the scale of some body's smallest structures. The new diffractive robots are tiny, measuring 5 microns to 2 microns, and can be controlled by magnetic fields to move independently.
Researchers at UCLA developed a new type of imaging technology that forms images in only one direction, enabling efficient and compact methods for asymmetric visual information processing and communication. The technology works exceptionally well under partially coherent light, achieving high-quality imaging with high power efficiency.
Researchers at the University of Tokyo introduce a new optical computing scheme called diffraction casting, which improves upon existing methods. The system uses light waves to perform logic operations and has shown promise in running complex calculations, including those used in machine learning.
A novel approach to overcome limitations of traditional methods, NeuPh uses local conditional neural fields to reconstruct high-resolution phase information from low-resolution measurements. It provides robust resolution enhancement and outperforms existing models in accuracy.
Researchers developed DeepLens design method based on curriculum learning to optimize complex lens designs. The approach considers key parameters like resolution, aperture, and field of view, providing optimal solutions without human intervention.
A pyramid-structured diffractive optical network has been developed to achieve unidirectional image magnification and demagnification. The system uses successive transmissive layers optimized through deep learning to perform computational tasks in an all-optical manner.
Researchers from SLAC, Stanford and other institutions have developed a technique to improve time resolution for the MeV-UED electron camera and trained an artificial intelligence model to tune the beam for various experimental needs. This enables unprecedented precision in exploring novel effects in materials and chemistry.
A recent study reveals that layered materials composed of low-dimensional structures exhibit new properties when exposed to light. The researchers found that electrons can transfer between layers and convert energy into thermal energy, facilitating fast thermal conversion.
Researchers introduced a novel method for generating computer-generated holograms (CGHs) that significantly reduces computational overhead while maintaining high-quality 3D visualization. The approach leverages a split Lohmann lens-based diffraction model, enabling rapid synthesis of 3D holograms through a single-step backward propagat...
Researchers extend spatially incoherent diffractive networks to perform complex-valued linear transformations with negligible error, opening up new applications in fields like autonomous vehicles. This breakthrough enables the encryption and decryption of complex-valued images using spatially incoherent diffractive networks.
Researchers at IBS achieve real-time observation of molecular ion formation and structural evolution using MeV-UED, unveiling a stable 'dark state' and ring-shaped intermediate ions. This breakthrough advances understanding of ion chemistry and its applications.
A research team developed an innovative optical technique, 'spectrum shuttle,' to produce and shape GHz burst pulses. The method facilitates ultrafast imaging within subnanosecond timescales, enabling analysis of rapid phenomena.
The study reveals that excited electrons in perovskites cause a shift towards increased symmetry in the crystal lattice. This attractive interaction between excitons could be exploited to enhance electron transport and improve solar cell performance.
Researchers developed three diffractive deep neural networks using orbital angular momentum to recognize objects in images, achieving accuracy comparable to wavelength and polarization-based models. The technology has potential for real-time processing applications like image recognition and data-intensive tasks.
Researchers at Osaka University developed a water-repelling nanostructured light diffuser that surpasses the functionality of other common diffusers. The diffuser uses randomly arranged self-cleaning nanopatterns to produce high transmittance and wide angular spread, making it useful for visual displays and energy-saving windows.
A team of scientists has successfully caught fast-moving hydrogen atoms within ammonia molecules using ultrafast electron diffraction. They observed the motion of hydrogen atoms and captured the associated change in the molecule's structure as it evolved, providing insights into proton transfers.
Researchers at the University of California - Santa Barbara have developed a method that enables high-quality imaging of still objects with only WiFi signals. The technique uses Keller cones to trace edges of objects and has successfully imaged the English alphabet through walls, a task previously deemed too difficult for WiFi.
A hybrid system of electronic encoding and diffractive optical decoding transmits optical information with high fidelity through random, unknown diffusers. The system outperforms traditional approaches that only utilize a diffractive optical network or an electronic neural network for optical information transfer.
Researchers have made groundbreaking progress in confining light to subnanometer scales using a novel waveguiding scheme. The approach generates an astonishingly efficient and confined optical field with applications in light-matter interactions, super-resolution nanoscopy, and ultrasensitive detection.
Researchers at the University of Washington have developed a multifunctional interface between photonic integrated circuits and free space, allowing for simultaneous manipulation of multiple light beams. The device operates with high accuracy and reliability, enabling applications in quantum computing, sensing, imaging, energy, and more.
A team from Nanjing University and Sun Yat-Sen University developed a two-facing Janus OPO scheme for generating high-efficiency, high-purity broadband LG modes with tunable topological charge. The output LG mode has a tunable wavelength between 1.5 μm and 1.6 μm, with a conversion efficiency above 15 percent.
Scientists create a simple approach to fabricating highly precise 3D aperiodic photonic volume elements (APVEs) for various applications. The method uses direct laser writing to arrange voxels of specific refractive indices in glass, enabling the precise control of light flow and achieving record-high diffraction efficiency.
Researchers used in-situ cryogenic TEM imaging to directly observe formation of pure-phase ice I c on low-temperature substrates. The study resolves the long-standing debate about cubic ice's existence, with implications for materials science, geology, and climate science.
A research team created bioplastic diffraction gratings from chitosan extracted from crab shells, enabling the production of portable and disposable spectrometers. The biodegradable gratings could improve sustainability in optical manufacturing and reduce seafood waste.
Researchers developed temporal compressive super-resolution microscopy (TCSRM) to overcome optical diffraction's spatial resolution restriction. TCSRM achieves high-speed imaging at 1200 frames per second with a spatial resolution of 100 nanometers, enabling observation of fast dynamics in fine structures.
Scientists at IISc develop neuromorphic camera that uses machine learning to pinpoint objects smaller than 50 nanometers in size, enabling nanoscale precision in biological processes, chemistry, and physics. The technique combines optical microscopy with the neuromorphic camera and machine learning algorithms.
A team of researchers identified a rare lead compound, lead(II) formate, in various areas of Rembrandt's The Night Watch using micro and macro X-ray analysis. This discovery provides clues about the artist's pictorial practices and the reactivity of lead driers in historical paintings.
Researchers have developed a diffractive optical processor that can compute hundreds of transformations in parallel using wavelength multiplexing. The processor, which is powered by light instead of electricity, can execute multiple complex functions simultaneously at the speed of light.
A new parallel peripheral-photoinhibition lithography system has been developed, enabling the fabrication of subdiffraction-limit features with high efficiency. The system uses two beams to excite and inhibit polymerization, allowing for nonperiodic and complex patterns to be printed simultaneously.
A new mesoscopic oblique plane microscopy method captures up to three times more resolvable image points than other similar systems, enabling whole-body volumetric recordings of neuronal activity and blood flow dynamics. The technique allows for single-cell tracking within the complete 3D circulation system for the first time.
Researchers at Brookhaven Lab and PNNL develop a new method to study the solid-electrolyte interphase in lithium metal batteries, revealing its convoluted chemistry. The team's findings provide a foundation for building more effective battery cells with higher energy density.
Researchers have developed a method for centimeter-scale color printing using grayscale laser writing, achieving vivid and fine-tunable colors. The technique leverages pixelated optical cavities to generate transmission colors with a transmission efficiency of 39-50%.
Researchers develop hybrid brightfield-darkfield transport of intensity approach, expanding accessible sample spatial frequencies and achieving 5-fold resolution increase. This method enables precise detection and quantitative analysis of subcellular features in large-scale cell studies.
Researchers from the University of Kassel developed an approach to extend the limits of interferometric topography measurements for optical resolution below small structures. Microsphere assistance enables fast and label-free imaging without requiring extensive sample preparation.
A research team from DTU has successfully designed and built a structure that concentrates light in a volume 12 times below the diffraction limit, paving the way for revolutionary new technologies. The breakthrough could lead to more sustainable chip architectures that use less energy.
Researchers used energy dispersive diffraction to create high-resolution 3D maps of bioapatite arrangements within shark centra, revealing key structures and their functions. The study provides insights into the structure-function relationship of the shark skeleton and could be applied to other organisms.
Scientists successfully image a single ion in an ion trap system on nanosecond timescale, achieving resolution beyond 175 nm. The technique also demonstrates sub-10nm positioning accuracy and time resolution of 50 ns.
Researchers discovered a novel topological edge soliton that inherits topological protection from its linear counterpart, enabling robust and localized light beams. This breakthrough is achieved through nonlinear photorefractive lattices harnessing the valley Hall effect, without requiring an external magnetic field.
Researchers at DESY create a table-top electron camera that captures the inner, ultrafast dynamics of matter by shooting short bunches of electrons at a sample. The system uses Terahertz radiation for pulse compression and is validated with the investigation of a silicon sample.
A team of Beckman researchers developed software to boost infrared imaging-based cancer diagnosis, enhancing image resolution and accelerating recording speeds. The software integrates data analysis and reduces limitations associated with IR imaging, making it faster and more accurate.
The NanED project aims to train 15 PhD students in 3D electron diffraction (3D ED) techniques, with a focus on industrial applications. The program will be led by the Istituto Italiano di Tecnologia and unite experts from 8 European research institutions and global companies.
MicroED can solve high-resolution crystal structures from sub-micron-sized crystals, aiding small-molecule drugs and transient polymorphs determination. This approach helps guide synthesis strategies and inform production decisions.
Developed by Jinan University researchers, the approach produces superoscillatory light spots without side lobes. The technique utilizes a cylindrical diffraction and sharp-edged apertures to eliminate tradeoffs between main and side lobes, enabling larger field of view while maintaining feature size within optical diffraction limit.
A new optical diffraction tomography technique allows for high-resolution imaging of thick tissue sections without chemical staining, increasing diagnostic speed and accuracy. The method has been demonstrated to visualize individual cells and multicellular tissue architectures with subcellular resolution.
Researchers identify subnanoscale chemical short-range order (CSRO) in face-centered cubic VCoNi alloy using complete suite of tools and methods. CSRO is linked to mechanical properties and plasticity mechanisms.
A team of researchers from Shanghai Jiao Tong University has developed a new way to break the Abbe diffraction limit and realize subwavelength imaging in an all-optical manner. By utilizing nonlinear four-wave mixing, they create super-resolution through scattering of evanescent fields into the far field.
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.
Scientists successfully applied novel approach to imaging gas-phased molecule Carbonyl Sulfide, revealing a significantly bent and asymmetrically stretched configuration of the ionized OCS+ structure. The ZCP-LIED technique retrieves accurate and precise information about atomic structure without exact knowledge over the laser field.
Scientists created a method for calculating optimal parameters of liquid crystal displays (LCDs) to enhance viewing angles without compromising image quality. The new technology uses diffraction optical elements with specific surface microreliefs to expand the angle of view, allowing for better color rendition and high resolution.
A team of scientists has proposed an efficient full-path calculation method for optical diffraction, leveraging the mathematical similarities between scalar and vector diffraction. The method uses the Bluestein approach to reduce computation time to sub-second levels, with superior flexibility in choosing ROIs and sampling numbers.
Researchers at ETH Zurich have developed a new method to produce more efficient and precise diffraction gratings, which can be used to create miniaturized optical devices. These devices have potential applications in futuristic smartphone cameras, biosensors, and autonomous vision for robots and self-driving cars.
Researchers from Tomsk Polytechnic University proposed a new configuration for nanoscopes that uses special diffraction gratings with gold plates, allowing for accelerated image generation without losing magnification power. The study's results are published in Annalen der Physik and show improvements in resolution up to 0.3 λ.
Researchers at Samara University developed an ultralight diffraction optic that weighs just 5 grams, compared to a massive system of lenses and mirrors weighing 500 grams. The new technology enables high-resolution images with comparable quality to consumer cameras and mobile phones.
Scientists at the Max Born Institute refined our understanding of strong-field processes like high harmonic generation and laser-induced electron diffraction. The study shows that returning electrons retain structural information on their initial molecular orbital, contradicting a commonly held assumption.
A new methodology examines microscale structural characteristics and changes during manufacturing processes, providing insights into electrical motor efficiency. The technique allows for the evaluation of grain size, shape, texture, and plastic deformations, enabling the tailoring of magnetic properties and minimizing losses.
Researchers at Lawrence Berkeley National Laboratory develop Multi-Tiered Iterative Phasing (M-TIP) algorithm to determine molecular structure from sparse and noisy single-particle diffraction data. This approach reduces the amount of required information, enabling the extraction of more features from limited experiments.
Researchers discovered iodide phasing is universally applicable to membrane protein structure determination, enabling a molecular-level understanding of biomolecules. This breakthrough accelerates computer-aided drug development and makes it cheaper.