Current Infrared Light News and Events

Current Infrared Light News and Events, Infrared Light News Articles.
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Terrestrial laser scanning for monitoring hydrological cycle of trees
Water is an essential element for all living things. Understanding the dynamics of water in trees is crucial for understanding the consequences of climate change and altered water availability for forest ecosystems. A joint research project with Samuli Junttila PhD, and Professor Masato Katoh of Shinshu University's Institute for Mountain Science and others demonstrates a new laser scanning based method that can be used to monitor changes in leaf water content of tree communities. (2021-02-22)

New "metalens" shifts focus without tilting or moving
An MIT-fabricated metalens shifts focus without tilting, shifting, or otherwise moving. The design may enable miniature zoom lenses for drones, cellphones, or night-vision goggles. (2021-02-22)

New sensor paves way to low-cost sensitive methane measurements
Researchers have developed a new sensor that could allow practical and low-cost detection of low concentrations of methane gas. Measuring methane emissions and leaks is important to a variety of industries because the gas contributes to global warming and air pollution. (2021-02-22)

Fibre-integrated, high-repetition-rate water window soft X-ray source
The generation and characterization of light in the soft X-ray domain of the spectrum play an ever-growing role in advancing fundamental research, life science and industrial applications. To meet the continuous demand for powerful, application-oriented optical tools, scientists from Germany have developed a new laser-driven soft X-ray source with a fibre-integrated setup. The approach establishes a new route toward simple and powerful soft X-ray sources, which will enhance and expand applications of short-wavelength light. (2021-02-22)

Seeing stable topology using instabilities
The researchers explore how topological phases of light in nonlinear optical media undergo the process of modulational instability. (2021-02-19)

Researchers find evidence of protein folding at site of intracellular droplets
Researchers at the University of Notre Dame found that elevated concentrations of proteins within the droplets triggered a folding event, increasing the potential for protein aggregation -- or misfolding -- which has been linked to neurological diseases including Alzheimer's disease and amyotrophic lateral sclerosis (ALS). (2021-02-19)

Spin hall effect of light with near 100% efficiency
POSTECH-KAIST joint research team develops perfect SHEL using anisotropic metasurfaces. (2021-02-18)

On the quest for other Earths
An international research team with members from ETH has developed a new method for directly imaging smaller planets in the habitable zone of a neighbouring star system. This opens up new possibilities in the search for extraterrestrial life. (2021-02-17)

Photosynthetic bacteria-based cancer optotheranostics
Natural purple photosynthetic bacteria (PPSB) can play a key role as a highly active cancer immunotheranostics agent that uses the bio-optical-window I and II near-infrared (NIR) light. PPSB have high tumor specificity and non-pathogenicity. Active anticancer efficacy and powerful multi-functions such as NIR-I-to-NIR-II fluorescence, photothermal conversion, reactive oxygen species generation, and contrasty photoacoustic effect, can be expressed using NIR light exposure to PPSB. (2021-02-16)

Ultrabright dots see beyond skin deep
Tiny light-emitting probes give researchers a better option for noninvasive imaging of living tissue. (2021-02-16)

Cancer research: Targeted elimination of leukemic stem cells
Cancer research in Bern has discovered a further mechanism to combat leukemia: a research team at Inselspital, Bern University Hospital and the University of Bern has succeeded in identifying an important signaling pathway for regulating leukemic stem cells. With this discovery, the researchers are expanding the arsenal of potentially highly effective drugs against leukemia. (2021-02-16)

HKU planetary scientists discover evidence for a reduced atmosphere on ancient Mars
The transition from a reduced planet to an oxidized planet is referred to as the Great Oxidation Event or GOE. This transition was a central part of our planet's evolution, and fundamentally linked to the evolution of life here -- specifically to the prevalence of photosynthesis that produced oxygen. Planetary geologists at HKU have discovered that Mars underwent a great oxygenation event of its own -- billions of years ago, the red planet was not so red. (2021-02-16)

Observations at a shed light on how hard coral survives without light
French researchers have studied for the first time the distribution of hard corals in the French Polynesian archipelago, from the surface to 120 metres deep. As the amount of light decreases, this coral associates with other filamentous algae, in addition to zooxanthellae, which become inserted into its skeleton. These algae, the only ones found at this depth, could therefore play an important role in the coral's adaptation to life at depth. (2021-02-16)

A sharper look at the interior of semiconductors
A research team at Friedrich Schiller University Jena (Germany) developed a high-resolution imaging method based on extreme short-wave UV light. It can be used to examine internal structures in semiconductors non-destructively, and with nanometre precision as the team reported in the current issue of the journal 'Optica'. (2021-02-16)

Luminescent windows generate energy from inside and out
Rice University engineers design and build windowpanes that redirect sunlight or illumination from indoors to edge-band solar cells. (2021-02-15)

Move over heavy goggles, here come the ultra-high refractive index lenses
POSTECH professor Junsuk Rho's research team develops a transparent silicon without visible light loss by controlling the silicon atomic structure. (2021-02-14)

NASA's TESS discovers new worlds in a river of young stars
Using observations from NASA's Transiting Exoplanet Survey Satellite (TESS), an international team of astronomers has discovered a trio of hot worlds larger than Earth orbiting a much younger version of our Sun called TOI 451. The system resides in the recently discovered Pisces-Eridanus stream, a collection of stars less than 3% the age of our solar system that stretches across one-third of the sky. (2021-02-12)

Capturing free-space optical light for high-speed wifi
Visible and infrared light can carry more data than radio waves, but has always been confined to a hard-wired, fiber-optic cable. Working with Facebook's Connectivity Lab, a Duke research team has now made a major advance toward the dream of ditching the fiber in fiber optics. (2021-02-11)

Brain activity can reveal the severity of autistic traits
A team of researchers from Russia and Israel applied a new algorithm to classify the severity of autistic personality traits by studying subjects' brain activity. The article 'Brief Report: Classification of Autistic Traits According to Brain Activity Recoded by fNIRS Using ε-Complexity Coefficients' is published in the Journal of Autism and Developmental Disorders. (2021-02-11)

A new way to look for life-sustaining planets
A new system for mid-infrared exoplanet imaging in combination with long observation time allows ground-based telescopes to directly capture images of planets about three times the size of Earth within the habitable zones of nearby stars. (2021-02-10)

A new method to search for potentially habitable planets
Imaging planets orbiting around nearby stars, which could potentially harbour life, has become a possibility thanks to the progress made in observational methods by an international team of astronomers, including Olivier Absil and Anne-Lise Maire, astrophysicists at the STAR Institute of ULiège. First candidate: Alpha Centauri, a system similar to ours, ''only'' 4.3 light years away. This study is the subject of a publication in the journal Nature Communications. (2021-02-10)

Origami powered by light
Some man-made materials can mimic plants' slow but steady reaction to light energy, usually triggered by lasers or focused ambient light. New research from the University of Pittsburgh and Carnegie Mellon University has discovered a way to speed up this effect enough that its performance can compete against electrical and pneumatic systems. (2021-02-10)

'Multiplying' light could be key to ultra-powerful optical computers
New type of optical computing could solve highly complex problems that are out of reach for even the most powerful supercomputers. (2021-02-08)

Large-area periodic perovskite nanostructures for lenticular printing laser displays
We fabricated large-area periodic structures with spatial resolution at wavelength scale from hybrid perovskite materials via a space-confined solution growth method. It takes advantages of both high refractive index contrast and high luminescence brightness, which allows the optical modulation on not only the reflection of illumination, but also the light emission from hybrid perovskites. The distributed feedback within these periodic structures significantly improves the degree of polarization and directionality of laser action while its threshold is also reduced. (2021-02-04)

Switching nanolight on and off
The report demonstrates a new method to control the flow of light of nanolight. Optical manipulation on the nanoscale, or nanophotonics, has become a critical area of interest as researchers seek ways to meet the increasing demand for technologies that go well beyond what is possible with conventional photonics and electronics. (2021-02-04)

Dynamic 3D printing process features a light-driven twist
The speed of light has come to 3D printing. Northwestern University engineers have developed a new method that uses light to improve 3D printing speed and precision while also, in combination with a high-precision robot arm, providing the freedom to move, rotate or dilate each layer as the structure is being built. The method introduces the 'on-the-fly' ability to manipulate the original design layer by layer and pivot the printing direction without recreating the model. (2021-02-03)

Air-guiding in solid-core optical waveguides: A solution for on-chip trace gas spectroscopy
We demonstrate an air-suspended waveguide that exhibits exceptional field delocalization and an external field confinement of 107 %, providing a stronger interaction with the surrounding air than a free-space beam. Operating at mid-infrared wavelengths, the waveguide is an ideal building block of next-generation on-chip sensors for sensitive and specific trace gas detection by tunable diode laser absorption spectroscopy (TDLAS). (2021-02-02)

The benefits of reading outdoors
Investigators demonstrate that image luminance has opposite effects on the contrast sensitivity of cortical pathways signaling lights than darks. It impairs luminance discrimination for the brightest stimuli of the scene while improving it for the darkest stimuli, a mechanism that is needed to efficiently sample natural scenes. (2021-02-02)

Researchers design next-generation photodetector
The new long-wavelength infrared photodetector from Professor Manijeh Razeghi could be used in night vision, optical communication, and thermal and medical imaging. (2021-02-02)

Extreme UV laser shows generation of atmospheric pollutant
Hokkaido University scientists show that under laboratory conditions, ultraviolet light reacts with nitrophenol to produce smog-generating nitrous acid. (2021-02-02)

Photonics research makes smaller, more efficient VR, augmented reality tech possible
Engineering researchers have developed and demonstrated a new approach for designing photonic devices. The advance allows them to control the direction and polarization of light from thin-film LEDs, paving the way for a new generation of virtual reality (VR) and augmented reality (AR) technologies. (2021-02-01)

High-speed holographic fluorescence microscopy system with submicron resolution
The National Institute of Information and Communications Technology (NICT), Tohoku University, Toin University of Yokohama, and Japan Science and Technology Agency (JST) have succeeded in developing a scanless high-speed holographic fluorescence microscopy system with submicron resolution for a 3D space. The system is based on digital holography. The developed microscopy system has an algorithm to acquire 3D information of fluorescent objects toward scanless 3D measurement in less than 1 millisecond. (2021-01-29)

New technology to detect bitter almonds in real time
Incorporating NIRS technology to almond analysis allows for quantifying amygdalin levels, the compound that causes the nut's bitter taste, on an industrial scale. (2021-01-29)

Light pollution linked to preterm births, reduced birth weights
Researchers discovered that light pollution is linked to preterm birth, a shortened gestational length, and reduced birth weight. babies born too early have higher rates of death and disability. In 2018, preterm birth and low birth weight accounted for roughly 17% of infant deaths (deaths before one year of age). Researchers hope this spawns policy discussion around minimizing light pollution. (2021-01-28)

White turns into (extreme-)ultraviolet
Researchers from the Max Born Institute for Nonlinear Optics and Short Pulse Spectroscopy (MBI) have developed a new method to modify the spectral width of extreme-ultraviolet (XUV) light. By employing a novel phase-matching scheme in four-wave mixing, they could compress the spectral width of the initial broadband light by more than hundred times. The detailed experimental and theoretical results have been published in Nature Photonics. (2021-01-25)

Light pollution linked to preterm birth increase
Scientists conducted the first study to examine the fetal health impact of light pollution based on a direct measure of skyglow, an important aspect of light pollution. Using an empirical regularity discovered in physics, called Walker's Law, a team from Lehigh University, Lafayette College and the University of Colorado Denver in the U.S., found evidence of reduced birth weight, shortened gestational length and preterm births. (2021-01-25)

A world first in circadian clock manipulation
A new method developed by Nagoya University and Groningen University scientists allows for reversible manipulation of the circadian clock period using a light-activated switch. Compounds which act on clock proteins were identified through large-scale chemical screening, and modified to include a light-activated switch, which was further modified to react to non-harmful visible light, creating a non-toxic and fully reversible circadian clock control process. (2021-01-24)

Reducing traps increases performance of organic photodetectors
Physicists at the Dresden Integrated Center for Applied Physics and Photonic Materials (IAPP) discovered that trap states rule the performance of organic photodetectors, ultimately limiting their detectivity. These highly promising results have now been published in the renowned scientific journal Nature Communications. (2021-01-22)

A method for calculating optimal parameters of liquid chrystal displays developed at RUDN University
A professor from RUDN University together with his colleagues from Saratov Chernyshevsky State University and D. Mendeleev University of Chemical Technology of Russia developed a method for calculating the parameters of diffraction optical elements used in LCDs. In particular, the new technology can be used to expand the angle of view while preserving high resolution and color rendition. (2021-01-22)

Gold nanoparticles more stable by putting rings on them
Hokkaido University scientists have found a way to prevent gold nanoparticles from clumping, which could help towards their use as an anti-cancer therapy. (2021-01-21)

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