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Categories: Engineering: Graphene, Mathematics: Statistics

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Engineering: Graphene
Published

Microscopic color converters move small laser-based devices closer to reality      (via sciencedaily.com) 

Researchers have used an atomically thin material to build a device that can change the color of laser beams. Their microscopic device -- a fraction of the size of conventional color converters -- may yield new kinds of ultra-small optical circuit chips and advance quantum optics.

Engineering: Graphene
Published

Super­con­duct­ing diode with­out mag­netic field in mul­ti­layer graphene      (via sciencedaily.com) 

Superconductors are the key to lossless current flow. However, the realization of superconducting diodes has only recently become an important topic of fundamental research. An international research team has now succeeded in reaching a milestone: the demonstration of an extremely strong superconducting diode effect in a single two-dimensional superconductor.

Engineering: Graphene
Published

Unexpected quantum effects in natural double-layer graphene      (via sciencedaily.com) 

An international research team has detected novel quantum effects in high-precision studies of natural double-layer graphene. This research provides new insights into the interaction of the charge carriers and the different phases, and contributes to the understanding of the processes involved.

Engineering: Graphene
Published

A paper battery with water switch      (via sciencedaily.com) 

A team of researchers has developed a water-activated disposable paper battery. The researchers suggest that it could be used to power a wide range of low-power, single-use disposable electronics -- such as smart labels for tracking objects, environmental sensors and medical diagnostic devices -- and minimize their environmental impact.

Engineering: Graphene
Published

Magnetic quantum material broadens platform for probing next-gen information technologies      (via sciencedaily.com) 

Scientists have used neutron scattering to determine whether a specific material's atomic structure could host a novel state of matter called a spiral spin liquid. By tracking tiny magnetic moments known as 'spins' on the honeycomb lattice of a layered iron trichloride magnet, the team found the first 2D system to host a spiral spin liquid.

Engineering: Graphene
Published

Graphene scientists capture images of atoms 'swimming' in liquid      (via sciencedaily.com) 

Graphene scientists have created a novel 'nano-petri dish' using two-dimensional (2D) materials to create a new method of observing how atoms move in liquid.

Engineering: Graphene
Published

Bioinspired protein creates stretchable 2D layered materials      (via sciencedaily.com) 

Nature creates layered materials like bone and mother-of-pearl that become less sensitive to defects as they grow. Now researchers have created, using biomimetic proteins patterned on squid ring teeth, composite layered 2D materials that are resistant to breaking and extremely stretchable.

Engineering: Graphene
Published

Buckyballs on gold are less exotic than graphene      (via sciencedaily.com) 

C60 molecules on a gold substrate appear more complex than their graphene counterparts, but have much more ordinary electronic properties. This is now shown by measurements with ARPES at BESSY II and detailed calculations.

Mathematics: Statistics
Published

Idea of ice age 'species pump' in the Philippines boosted by new way of drawing evolutionary trees      (via sciencedaily.com) 

A groundbreaking Bayesian method and new statistical analyses of genomic data from geckos in the Philippines shows that during the ice ages, the timing of gecko diversification gives strong statistical support for the first time to the Pleistocene aggregate island complex (PAIC) model of diversification, or 'species pump.'

Engineering: Graphene
Published

New research furthers understanding of the electronic structure of graphite      (via sciencedaily.com) 

Graphite is an incredibly important, versatile mineral, with uses spanning industries. Graphite is an essential component of many batteries, including lithium-ion batteries, and demand is only increasing as new technology is developed. Surprisingly, no spectroscopic studies have so far accurately measured the electronic states of the surface and the edge of graphite from a microscopic point of view. Indeed, the improvement in battery performance depends largely on the control of the characteristics of the graphite at the tip.

Engineering: Graphene
Published

Researcher uses graphene for same-time, same-position biomolecule isolation and sensing      (via sciencedaily.com) 

New research has overcome a major challenge to isolating and detecting molecules at the same time and at the same location in a microdevice. The work demonstrates an important advance in using graphene for electrokinetic biosample processing and analysis and could allow lab-on-a-chip devices to become smaller and achieve results faster.

Engineering: Graphene
Published

Research team accelerates imaging techniques for capturing small molecules' structures      (via sciencedaily.com) 

A new research effort is accelerating imaging techniques to visualize structures of small molecules clearly -- a process once thought impossible. Their discovery unleashes endless potential in improving everyday life applications -- from plastics to pharmaceuticals.

Engineering: Graphene
Published

Flashing creates hard-to-get 2D boron nitride      (via sciencedaily.com)     Original source 

Chemists use their flash Joule heating process to synthesize 2D flakes of boron nitride and boron carbon nitride, highly valued for lending thermal and chemical stability to compounds.

Engineering: Graphene
Published

Thin mica shows semiconducting behavior, say scientists in new study      (via sciencedaily.com)     Original source 

Muscovite mica (MuM) is a highly stable mineral that is commonly used as an insulator. However, the electrical properties of single-layer and few-layered MuM are not well understood. Now, a group of researchers reports and explains unusually high conductivity in MuM flakes that are only a few molecule layers thick. Their findings could open doors to the development of two-dimensional electronic devices that are robust against harsh environments.

Mathematics: Statistics
Published

Topology and machine learning reveal hidden relationship in amorphous silicon      (via sciencedaily.com) 

Fine-tuning the thermal conductivity of amorphous silicon used in technologies such as solar cells and image sensors should become much easier thanks to the computational topology and machine-learning-assisted discovery of the relationship between nano-scale structures and physical properties.

Mathematics: Statistics
Published

When quan­tum par­ti­cles fly like bees      (via sciencedaily.com) 

A quantum system with only 51 charged atoms can take on more than two quadrillion different states. Calculating the system's behavior is child's play for a quantum simulator. But verifying the result is almost impossible, even with today's supercomputers. A research team has now shown how these systems can be verified using equations formulated in the 18th century.

Mathematics: Statistics
Published

One particle on two paths: Quantum physics is right      (via sciencedaily.com) 

The famous double slit experiment shows that particles can travel on two paths at the same time -- but only by looking at a lot of particles and analysing the results statistically. Now a two-path-interference experiment has been designed that only has to measure one specific particle to prove that it travelled on two paths.

Geoscience: Environmental Issues Mathematics: Statistics
Published

Exposure assessment for Deepwater Horizon oil spill: Health outcomes      (via sciencedaily.com) 

Mathematicians have developed statistical methods that lay the framework for the crucial first step of determining whether there are any linkages between exposures and health outcomes from the 2010 Deepwater Horizon oil spill, which is considered the largest marine oil spill in the history of the U.S.

Mathematics: Statistics
Published

Machine learning model could better measure baseball players' performance      (via sciencedaily.com) 

Researchers have developed a machine learning model that could better measure baseball players' and teams' short- and long-term performance, compared to existing statistical analysis methods for the sport. Drawing on recent advances in natural language processing and computer vision, their approach would completely change, and could enhance, the way the state of a game and a player's impact on the game is measured.

Mathematics: Statistics
Published

Study shows gaps in how STEM organizations collect demographic information      (via sciencedaily.com) 

Professional organizations in science, technology, engineering and mathematics (STEM) fields could more effectively collect data on underrepresented groups in their fields, according to a new survey. With more robust information, STEM organizations could better target efforts to recruit and retain a more diverse membership.