Tunable "metasurface" is akin to optical swiss army knife
MIT engineers and colleagues report important new advances on a tunable metasurface, or flat optical device patterned with nanoscale structures, that they compare to a Swiss army knife while its passive predecessor can be thought of as just one tool,.....»»
Review covers optical aspects of quantitative photoacoustic tomography
Quantitative photoacoustic tomography (QPAT) is a medical imaging technique that combines laser-induced photoacoustic signals and ultrasound detection to create detailed three-dimensional images of biological tissues. The process involves irradiating.....»»
ABB buys tech company to give next-generation industrial robots eyes and brains
The deal to buy Sevensense, a Swiss startup, is the latest robotics investment by ABB and follows growing demand for industrial robots that can move and work independently......»»
Researchers use spinning metasurfaces to craft compact thermal imaging system
Researchers have developed a new technology that uses meta-optical devices to perform thermal imaging. The approach provides richer information about imaged objects, which could broaden the use of thermal imaging in fields such as autonomous navigati.....»»
Researchers look at thermal stabilization in photonic packages
Photonics offers various advantages, including enablement of high-speed and low-loss communication by leveraging light properties in optical data communication, biomedical applications, automotive technology, and artificial intelligence domains. Thes.....»»
Why we need to know more about individual carbon footprints
Most countries, including Switzerland, record their greenhouse gas emissions by source and sector. In absolute terms, Swiss greenhouse gases make up less than 1% of global emissions. With an average of 12 metric tons of CO2 equivalents per capita per.....»»
Process for the optical analysis of trace gases optimized
Laser-based absorption spectroscopy is an important method for determining the concentration of gas components in a sample. Modern devices are highly specialized for detecting very specific gases, such as trace gases in the atmosphere, in combustion.....»»
Multi-point temperature measurements in packed beds using phosphor thermometry and ray tracing simulations
A team of researchers has proposed an indirect optical method for determining internal temperatures of opaque packed beds based on phosphor thermometry. This method enables simultaneous multi-point measurements using an image-based separation of the.....»»
Prescription lenses for Apple Vision Pro are cheaper than expected
Apple has announced two lens families for its forthcoming Apple Vision Pro, a Reader option and full Zeiss prescription lenses, both for considerably less than predicted.A Zeiss optical insert lens, at least similar to the ones being prepared for Vis.....»»
Researchers develop efficient and accessible single-molecule platform for detecting various amylin species
A research team led by The Hong Kong University of Science and Technology (HKUST) has developed an optical plasmonic tweezer-controlled Surface-Enhanced Raman Spectroscopy (SERS) platform that utilizes on-and-off control of light to probe various amy.....»»
The use of deep learning for phase recovery
Light, as an electromagnetic field, has two essential components: amplitude and phase. However, optical detectors, usually relying on photon-to-electron conversion (such as charge-coupled device sensors and the human eye), cannot capture the phase of.....»»
Geometric origin of intrinsic dark counts in superconducting nanowire single-photon detectors
In a recent leap forward for quantum computing and optical technologies, researchers have uncovered an important aspect of photon detection. Superconducting nanowire single-photon detectors (SNSPDs), pivotal in quantum communication and advanced opti.....»»
Enantiomeric lead-free double perovskites rationally designed by achiral-chiral cation intercalation
Chiral optical materials have attracted great attention in multiple disciplines due to their wide application value in fields such as remote sensing, three-dimensional display, information communication, and optical information storage. With the stro.....»»
Engineers pair laser light to crystal lattice vibrations to enhance optical properties of 2D material
Engineers at Columbia University and theoretical collaborators at the Max Planck for the Structure and Dynamics of Matter have found that pairing laser light to crystal lattice vibrations can enhance the nonlinear optical properties of a layered 2D m.....»»
All-optical object identification and three-dimensional reconstruction based on optical computing metasurface
As object identification and three-dimensional (3D) reconstruction techniques become essential in various reverse engineering, artificial intelligence, medical diagnosis, and industrial production fields, there is an increasing focus on seeking vastl.....»»
Generation of lossy mode resonances using perovskite nanofilms
In recent research, scientists have unlocked the potential of a remarkable material called perovskite to revolutionize the world of optical sensing. Their study is published in the journal Opto-Electronic Advances......»»
Research team develops optical technique for simultaneously producing and shaping gigahertz burst pulses
The generation and manipulation of high-repetition pulses hold great promise across various applications, including high-speed photography, laser processing, and acoustic wave generation. Gigahertz (GHz) burst pulses, with intervals ranging from ~0.0.....»»
Wearable sensors for advanced plant phenotyping
In response to increasing global food demands, improving crop yields through efficient phenotyping is imperative. Optical imaging-based phenotyping has markedly progressed plant breeding and crop management, yet encounters limitations in spatial reso.....»»
Researchers use vapor deposition to make covalent organic framework films
Rice University materials scientists developed a fast, low-cost, scalable method to make covalent organic frameworks (COFs), a class of crystalline polymers whose tunable molecular structure, large surface area and porosity could be useful in energy.....»»
Scientists create tunable shells to encapsulate tiny droplets
Scientists at the Indian Institute of Science (IISc) have developed a novel technique to encapsulate liquid droplets used for various applications, including single crystal growth and cell culture......»»
A new method to fabricate optical devices that more closely match their design specifications
Photolithography involves manipulating light to precisely etch features onto a surface, and is commonly used to fabricate computer chips and optical devices like lenses. But tiny deviations during the manufacturing process often cause these devices t.....»»