SMART discovers the Science behind Varying Performance of Different Colored LEDs

An array of multi-colored LEDs periodically arranged to give off visible light; a combination of InGaN based red, blue, and green LEDs is essential to cover lighting demands efficiently

The findings pave the way for development of more efficient, next-gen LEDs covering the entire visible spectrum. Researchers have developed a new multifaceted method that can directly observe compositional fluctuations in indium gallium nitride, a semiconductor material used in LEDs. The method can be adapted and applied in other materials science studies to investigate compositional fluctuations.

Researchers from the Low Energy Electronic Systems (LEES) Interdisciplinary Research Group (IRG) at Singapore-MIT Alliance for Research and Technology (SMART), MIT’s research enterprise in Singapore, togeth...

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Search for Sterile Neutrinos: It’s all about a Bend in the Curve

The results of the KATRIN experiment rule out a light sterile neutrino with a mass between 3 and 30 electronvolt. A neutrino within this range would have revealed itself by a bend in the orange line, e.g. as shown here at 10 electronvolt under the final value of 18.6 kiloelectronvolt. (Green line: Spectrum of a virtual light sterile neutrino with a mass of 10 eV; blue line: spectrum of the classical, active neutrino; orange line: combined spectrum. (Plot: KATRIN collaboration)

KATRIN experiment succeeds in strongly narrowing the search elusive particles. There are many questions surrounding the elementary particle neutrino, in particular regarding its mass...

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A Sulfosugar from Green Vegetables Promotes the Growth of Important Gut Bacteria

Fluorescently labelled bacteria on black background
Gut section with fluorescently labelled bacteria (© Huimin Ye).

A team of scientists has analyzed how microbes in the gut process the plant-based, sulfur-containing sugar sulfoquinovose. Their study discovered that specialized bacteria cooperate in the utilization of the sulfosugar, producing hydrogen sulfide. This gas has disparate effects on human health: at low concentrations, it has an anti-inflammatory effect, while increased amounts of hydrogen sulfide in the intestine, in turn, are associated with diseases such as cancer.

With the consumption of a single type of vegetable such as spinach, hundreds of chemical components enter our digestive tract. There, they are further metabolized by the gut microbiome, a unique collection of hundreds of microbial species...

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Discovery Could Help Lengthen Lifespan of Electronic Devices

The research could lead to electronics being designed with better endurance. Researchers have made a significant discovery in the field of materials science, for the first time providing a full picture of how fatigue in ferroelectric materials occurs.

Ferroelectric materials are used in many devices, including memories, capacitors, actuators and sensors. These devices are commonly used in both consumer and industrial instruments, such as computers, medical ultrasound equipment and underwater sonars.

Over time, ferroelectric materials are subjected to repeated mechanical and electrical loading, leading to a progressive decrease in their functionality, ultimately resulting in failure. This process is referred to as ‘ferroelectric fatigue’.

It is a main cause of the failure of a...

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