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Categories: Engineering: Graphene, Mathematics: Puzzles
Published New carbon nanotube-based foam promises superior protection against concussions
(via sciencedaily.com) A lightweight, ultra-shock-absorbing foam made from carbon nanotubes is so good at absorbing and dissipating the energy of an impact, it could vastly improve helmets and prevent concussions and other traumatic brain injuries.
Published Online gaming enhances career prospects and develops soft skills, finds new study
(via sciencedaily.com) Online gaming behavior can encourage gamers to gain a variety of soft skills which could assist them with training to support their career aspirations, according to new research.
Published Microlaser chip adds new dimensions to quantum communication
(via sciencedaily.com) With only two levels of superposition, the qubits used in today's quantum communication technologies have limited storage space and low tolerance for interference. Engineering's hyperdimensional microlaser generates 'qudits,' photons with four simultaneous levels of information. The increase in dimension makes for robust quantum communication technology better suited for real-world applications.
Published Asphaltene changed into graphene for composites
(via sciencedaily.com) The flash Joule heating process turns asphaltenes, a byproduct of crude oil production, into graphene for use in composite materials.
Published Researchers learn to engineer growth of crystalline materials consisting of nanometer-size gold clusters
(via sciencedaily.com) First insights into engineering crystal growth by atomically precise metal nanoclusters have been achieved in a new study.
Published Growing pure nanotubes is a stretch, but possible
(via sciencedaily.com) Researchers have published a new theory for making batches of carbon nanotubes with a single, desired chirality. Their method could simplify purification of nanotubes that are all metallic or all semiconductors.
Published New study introduces the best graphite films
(via sciencedaily.com) A recent study has proposed a strategy to synthesize single-crystalline graphite films orders of magnitude large, up to inch scale.
Published Discovery of a fundamental law of friction leads to new materials that can minimize energy loss
(via sciencedaily.com) Chemists and engineers have discovered a fundamental friction law that is leading to a deeper understanding of energy dissipation in friction and the design of two-dimensional materials capable of minimizing energy loss.
Published In nanotube science, is boron nitride the new carbon?
(via sciencedaily.com) Engineers synthesized aligned forests of nanoscale fibers made of boron nitride, or 'white graphene.' They hope to harness the technique to fabricate bulk-scale arrays of these nanotubes, which can then be combined with other materials to make stronger, more heat-resistant composites, for instance to shield space structures and hypersonic aircraft.
Published Mathematicians explain how some fireflies flash in sync
(via sciencedaily.com) A new study by mathematicians shows that math borrowed from neuroscience can describe how swarms of these unique insects coordinate their light show, capturing key details about how they behave in the wild.
Published Music class in sync with higher math scores -- but only at higher-income schools
(via sciencedaily.com) Music and arts classes are often first on the chopping block when schools face tight budgets and pressure to achieve high scores on standardized tests. But it's precisely those classes that can increase student interest in school and even benefit their math achievement, according to a new study.
Published Trapping polaritons in an engineered quantum box
(via sciencedaily.com) Researchers have engineered a quantum box for polaritons in a 2D material, achieving large polariton densities and a partially 'coherent' quantum state. New insights from the novel technique could allow researchers to access striking 'collective' quantum phenomena in this material family, and enable ultra-energy efficient and high-performance future technologies. Laying a 'small' 2D material on top of a 'large' layer allowed the researchers to trap and investigate polaritons, comparing them with freely moving polaritons.
Published Electronic gaming can trigger potentially lethal heart rhythm problems in susceptible children
(via sciencedaily.com) Electronic gaming can precipitate life-threatening cardiac arrhythmias in susceptible children whose predisposition may have been previously unrecognized, according to a new report. The investigators documented an uncommon, but distinct pattern among children who lose consciousness while playing electronic (video) games.
Published As few as 1 in 5 COVID cases may have been counted worldwide, mathematical models suggest
(via sciencedaily.com) Mathematical models indicate that as few as one in five cases of COVID-19 which occurred during the first 29 months of the pandemic are accounted for in the half billion cases officially reported.
Published Upgrading your computer to quantum
(via sciencedaily.com) Researchers have demonstrated how a nanoscale layer of superconducting niobium nitride (NbNx) can be grown directly onto aluminum nitride (AIN). The arrangement of atoms, nitrogen content, and electrical conductivity were found to depend on growth conditions, particularly temperature, and the spacing of atoms in the two materials was sufficiently compatible to produce flat layers. The structural similarity between NbNx and AIN will facilitate the integration of superconductors into semiconductor optoelectronic devices.
Published Novel carrier doping in p-type semiconductors enhances photovoltaic device performance by increasing hole concentration
(via sciencedaily.com) The carrier concentration and conductivity in p-type monovalent copper semiconductors can be significantly enhanced by adding alkali metal impurities. Doping with isovalent and larger-sized alkali metal ions effectively increased the free charge carrier concentration, and the mechanism was unraveled by their theoretical calculations. Their carrier doping technology enables high carrier concentration and high mobility p-type thin films to be prepared from the solution process, with photovoltaic device applications.
Published Making mini-magnets
(via sciencedaily.com) Researchers demonstrated a topological insulator device that opens the way towards observing the quantum anomalous Hall effect. Because the currents generated are resistant to scattering, but very sensitive to applied magnetic fields, they may be used for reducing power consumption in computing applications.
Published Gamers can have their cake and eat it too
(via sciencedaily.com) New research from Japan shows that multiple cognitive abilities may be empirically measured from a complex game experience depending on the game's design.
Published The way you talk to your child about math matters
(via sciencedaily.com) 'You're so smart!' -- This encouraging response may actually do more harm than good to children's math performance, according to a new study. The study found that encouraging children with responses related to their personal traits or innate abilities may dampen their math motivation and achievement over time.
Published Researchers devise tunable conducting edge
(via sciencedaily.com) Physicists have demonstrated a new magnetized state in a monolayer of tungsten ditelluride. This material of one-atom thickness has an insulating interior but a conducting edge, which has important implications for controlling electron flow in nanodevices.