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“#Computational modelling explains why blues and greens are brightest colous in nature” Credit: University of Cambridge Researchers have shown why intense, pure red colors in nature are mainly produced by pigments, instead of the structural color that produces bright blue and green hues. The researchers, from the University of Cambridge, used a numerical experiment to…
“#A phonon laser: Coherent vibrations from a self-breathing resonator” Figure 1. (a) Polariton BEC and phonon lasing of a microstructured trap in a semiconductor microcavity. (b) BEC emission under low (the lower curve) and high (the upper curve) particle densities, displaying phonon sidebands separated by the phonon energy ℏω_a . Credit: PDI and Instituto Balseiro…
“#New ultrafast yellow laser poised to benefit biomedical applications” Researchers used a two-step nonlinear frequency conversion to convert mid-infrared laser light into yellow light that can be tuned from 570 nm to 596 nm. This wavelength range is useful for a variety of applications. Credit: Varun Sharma Researchers have developed a new compact and ultrafast,…
“#Phasing out a microscope’s tricks” Electron microscopy images of a molybdenum disulfide surface reveal that imaging artifacts can make sulfur atoms appear brighter or darker, leading to misidentification of crystal structures. Credit: 2020 KAUST An instrument error can lead to complete misidentification of certain crystals, reports a KAUST study that suggests researchers need to exercise…
“#Researchers design system to visualize objects through clouds and fog” A three-dimensional reconstruction of the reflective letter “S,” as seen through the 1-inch-thick foam. Credit: Stanford Computational Imaging Lab Like a comic book come to life, researchers at Stanford University have developed a kind of X-ray vision—only without the X-rays. Working with hardware similar to…
“#Researchers make tiny, yet complex fiber optic force sensor” Researchers developed a tiny fiber optic force sensor that can measure extremely slight forces exerted by small objects. It can be immersed in a variety of liquids and doesn’t need any additional packaging for most applications. Credit: Denis Donlagic, University of Maribor Researchers have developed a…
“#Researchers use waveguides for sensitive protease monitoring” Credit: CC0 Public Domain For the first time, researchers have detected protease activity with surface-enhanced Raman spectroscopy (SERS) performed using a tiny waveguide. The work paves the way to real-time, label-free lab-on-a-chip protease monitoring, which could offer a high-throughput approach to screen for new drugs that inhibit proteases…
“#Terahertz receiver for 6G wireless communications” Future mobile network: Small radio cells (orange) are connected by wireless high-speed terahertz links (green). Credit: IPQ, KIT / Nature Photonics Future wireless networks of the 6th generation (6G) will consist of a multitude of small radio cells that need to be connected by broadband communication links. In this…
“#Reconfiguring microwave photonic filters without an external device” Camille Brès et Jianqi Hu, autors of the Nature Communications article. Credit: Alain Herzog Researchers from EPFL’s Photonics Systems Lab have come up with a way of reconfiguring microwave photonic filters without the need for an external device. This paves the way for more compact, environmentally friendly…
“#Near-optimal chip-based photon source developed for quantum computing” Researchers have developed a new CMOS-compatible silicon photonics photon source that satisfies all the requirements necessary for large-scale photonic quantum computing. The research represents a significant step toward mass-manufacturable ideal single photon sources. There is a widespread effort to develop chip-based quantum computers because the mature CMOS…