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December 13 2019

18:10

Study leads to new approach to trapping light in photonic kagome crystals

A new approach to trapping light in artificial photonic materials by a City College of New York-led team could lead to a tremendous boost in the transfer speed of data online.
17:24

As California thins forests to limit fire risk, some resist

Buzzing chainsaws are interrupted by the frequent crash of breaking branches as crews fell towering trees and clear tangled brush in the densely forested Santa Cruz Mountains south of San Francisco.
17:15

Colliding molecules and antiparticles

Antiparticles—subatomic particles that have exactly opposite properties to those that make up everyday matter—may seem like a concept out of science fiction, but they are real, and the study of matter-antimatter interactions has important medical and technological applications. Marcos Barp and Felipe Arretche from the Universidade Federal de Santa Catarina, Brazil have modelled the interaction between simple molecules and antiparticles known as positrons and found that this model agreed well with experimental observations. This study has been published in The European Physical Journal D.
17:14

Newfound Martian aurora actually the most common; sheds light on Mars' changing climate

A type of Martian aurora first identified by NASA's MAVEN spacecraft in 2016 is actually the most common form of aurora occurring on the Red Planet, according to new results from the mission. The aurora is known as a proton aurora and can help scientists track water loss from Mars' atmosphere.
17:10

Better studying superconductivity in single-layer graphene

Made up of 2-D sheets of carbon atoms arranged in honeycomb lattices, graphene has been intensively studied in recent years. As well as the material's diverse structural properties, physicists have paid particular attention to the intriguing dynamics of the charge carriers its many variants can contain. The mathematical techniques used to study these physical processes have proved useful so far, but they have had limited success in explaining graphene's 'critical temperature' of superconductivity, below which its electrical resistance drops to zero. In a new study published in The European Physical Journal B, Jacques Tempere and colleagues at the University of Antwerp in Belgium demonstrate that an existing technique is better suited for probing superconductivity in pure, single-layer graphene than previously thought.
17:07

Bone bandage soaks up pro-healing biochemical to accelerate repair

Researchers at Duke University have engineered a bandage that captures and holds a pro-healing molecule at the site of a bone break to accelerate and improve the natural healing process.
17:07

Researchers create synthetic nanopores made from DNA

In 2015, the first commercial nanopore DNA sequencing device was introduced by Oxford Nanopore Technologies. Based on a synthetically engineered transmembrane protein, nanopore sequencing allows long DNA strands to be channelled through the central lumen of the pore where changes in the ionic current work as a sensor of the individual bases in the DNA. This technique was a key milestone for DNA sequencing and the achievement was only made possible after decades of research.
17:06

Salmon lose diversity in managed rivers, reducing resilience to environmental change

The manipulation of rivers in California is jeopardizing the resilience of native Chinook salmon. It compresses their migration timing to the point that they crowd their habitats. They may miss the best window for entering the ocean and growing into adults, new research shows.
17:06

Knowledge-sharing: A how-to guide

How is knowledge exchanged and shared when interdisciplinary research teams work together? Professor Margarete Boos and Lianghao Dai from the University of Göttingen have investigated this by studying several different research projects. Their study makes concrete recommendations for how teams can best work together and achieve effective collaborations. The results have been published in the journal Nature.
17:05

Simultaneous emission of orthogonal handedness in circular polarization

Control of the polarization of light is a key feature for displays, optical data storage, optical quantum information, and chirality sensing. In particular, the direct emission of circularly polarized (CP) light has attracted great interest because of the enhanced performance of displays such as organic light-emitting diodes (OLEDs) and light sources for characterizing the secondary structure of proteins. To actually produce CP light, the luminescent layer should contain chiral characteristics, which can be achieved, for example, by decorating the luminophores with chiral materials or doping chiral molecules into achiral materials. However, such chirality of the luminescent layer makes it possible to generate only one kind of CP light in an entire device since it is difficult to control the chiral sense spatially.
17:05

Freestanding microwire-array enables flexible solar window

TSCs are emerging devices that combine the advantages of visible transparency and light-to-electricity conversion. One of the valuable prospective applications of such devices is their integration into buildings, vehicles, or portable electronics. Therefore, colour-perception and flexibility are important as well as efficiency. Currently, existing transparent solar cells are based predominantly on organics, dyes, perovskites and amorphous Si; however, the colour-tinted transparent nature or rigidity of those devices strongly limits the utility of the resulting TSCs for real-world applications.
17:00

A self-cleaning surface that repels even the deadliest superbugs

A team of researchers at McMaster University has developed a self-cleaning surface that can repel all forms of bacteria, preventing the transfer of antibiotic-resistant superbugs and other dangerous bacteria in settings ranging from hospitals to kitchens.
16:54

Nurses sleep less before a scheduled shift, hindering patient care and safety

Nurses sleep nearly an hour and a half less before work days compared to days off, which hurts patient care and safety, finds a new study.
16:54

People willing to risk near-certain death for an HIV cure

People willing to risk near-certain death for an HIV cure; protecting individuals and families in genetic and psychiatric research, considerations for including pregnant women in research.
16:54

Breakthrough in Zika virus vaccine

Researchers have made significant advances in developing a novel vaccine against Zika virus, which could potentially lead to global elimination of the disease.
16:54

Perinatal exposure to flame retardant alters epigenome, predisposing metabolic disease

A new study showed that environmentally relevant exposure to polybrominated diphenyl ether (PBDE), a brominated flame retardant, through the umbilical cord and breast milk permanently changed liver metabolism in rats.
16:54

New study enhances knowledge about widespread diseases

When proteins in the brain form deposits consisting of insoluble aggregates, diseases such as Alzheimer's or Parkinson's can occur. Now a research team has come a step closer to understanding this process.
16:54

Synthetic nanopores made from DNA

A scientific collaboration has resulted in the construction of a synthetic DNA nanopore capable of selectively translocating protein-size macromolecules across lipid bilayers.
16:54

Moongoose females compete over reproduction

A new study on wild banded mongooses reveals that females may use spontaneous abortion to cope with reproductive competition, and to save their energy for future breeding attempts in better conditions.
16:54

Study probing visual memory, amblyopia unveils many-layered mystery

Scientists pinpionted the role of a receptor in the plasticity underlying the degradation of vision in the common childhood condition amblyopia, but expected that receptor would play a bigger role in layer 4 of the visual cortex.
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