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Science
“#New cosmic magnetic field structures discovered in galaxy NGC 4217” The spiral galaxy NGC 4217 has a huge magnetic field that is shown here as green lines. The data for this visualization were recorded with the radio telescope Karl G. Jansky Very Large Array (VLA) of the National Science Foundation. The image of the galaxy…
“#How adding green tea extract to prepared foods may reduce the risk for norovirus” Infusing prepared foods with an edible coating that contains green tea extract may lower consumers’ chances of catching the highly contagious norovirus by eating contaminated food, new research suggests. Norovirus, which causes vomiting and diarrhea, sickens an estimated 48 million people…
“#Ultra-small, parasitic bacteria found in groundwater, moose… and you” 11/20/19 – CAMBRIDGE, MA. – Forsyth Institute headshots and lab stock on Nov. 20, 2019. Credit: Matthew Modoono for Forsyth Institute Inside your mouth right now, there is a group of bacteria whose closest relatives can also be found in the belly of a moose, in…
“#How viruses and bacteria balance each other in the gut microbiome” Credit: Stephanie King. The adage ‘all things in moderation’ applies not to just to food and drink, but also to the legions of bacteria inside our guts helping us digest that food and drink. It turns out the rule may also extend to the…
“#Asteroid shower on the Earth-Moon system 800 million years ago revealed by lunar craters” An asteroid shower on the Earth-Moon system Credit: Artist’s illustration, credit: Murayama/Osaka Univ. A research team led by Osaka University investigated the formation ages of 59 lunar craters with a diameter of approximately 20 km using the Terrain Camera (TC) onboard…
“#A survey on optical memory and optical RAM technologies” a master-slave scheme, b feedback loop scheme, c injection-locking technique and d phase-change material (PCM) properties in the case of GST compounds. Credit: by Alexoudi, T., Kanellos, G.T. & Pleros, N. Over the past decades, ‘storing light’ has appeared as a rather controversial concept, given that…
Topological insulators are a new phase of matter unique for their insulating bulk and perfectly conducting edges. They have been at the forefront of condensed matter physics for the past decade, and more recently inspired the emergence of topological phases in many classical-wave systems, such as photonics and acoustics. To date, all studies of topological…
“#Synthetic dimensions enable a new way to construct higher-order topological insulators” a, An array of coupled ring resonators (green), each with an embedded electro-optic modulator (orange). b, The corresponding lattice in real and synthetic dimensions, x and frequency, respectively. The lattice shows higher-order topological behavior, such as the existence of corner modes. (c), Real-space structure…
“#New detection method turns silicon cameras into mid-infrared detectors” Artistic rendering of the principle of non-degenerate two-photon absorption (NTA) for the detection of mid-infrared (MIR) by a silicon-based camera. In this detection technique, the sensor is illuminated directly by the MIR light beam, while a second, near-infrared (NIR) beam is also incident on the sensor….
“#Temporal aiming with temporal metamaterials” a, an incoming electromagnetic wave travels in an unbounded medium with an isotropic permittivity. b, by rapidly changing the permittivity of the medium in time from isotropic to an anisotropic tensor (with the x component of permittivity smaller than its z component) a temporal boundary is introduced producing forward and…