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Categories: Engineering: Graphene, Geoscience: Earthquakes
Published One-atom-thick ribbons could improve batteries, solar cells and sensors
(via sciencedaily.com) Researchers created nanoribbons made of phosphorus and tiny amounts of arsenic, which they found were able to conduct electricity at temperatures above -140 degrees Celsius, while retaining the highly useful properties of the phosphorus-only ribbons.
Published Making contact: Researchers wire up individual graphene nanoribbons
(via sciencedaily.com) Researchers have developed a method of 'wiring up' graphene nanoribbons (GNRs), a class of one-dimensional materials that are of interest in the scaling of microelectronic devices. Using a direct-write scanning tunneling microscopy (STM) based process, the nanometer-scale metal contacts were fabricated on individual GNRs and could control the electronic character of the GNRs. The researchers say that this is the first demonstration of making metal contacts to specific GNRs with certainty and that those contacts induce device functionality needed for transistor function.
Published New Si-based photocatalyst enables efficient solar-driven hydrogen production and biomass refinery
(via sciencedaily.com) A research team has achieved a significant breakthrough in the development of a hybrid silicon photocatalyst.
Published Making hydrogen from waste plastic could pay for itself
(via sciencedaily.com) Researchers have found a way to harvest hydrogen from plastic waste using a low-emissions method that generates graphene as a by-product, which could help offset production costs.
Published Largest historic fire death toll belongs to aftermath of 1923 Japan Earthquake
(via sciencedaily.com) Original source Fires that raged in the days following the 1 September 1923 magnitude 7.9 Kant earthquake killed roughly 90% of the 105,000 people who perished in and around Tokyo, making it one of the deadliest natural disasters in history -- comparable to the number of people killed in the World War II atomic bombing of Hiroshima. The story of the conflagration, not well-known outside of Japan, holds important lessons for earthquake scientists, emergency response teams and city planners, according to a new article.
Published Scientific ocean drilling discovers dynamic carbon cycling in the ultra-deep-water Japan Trench
(via sciencedaily.com) Original source Hadal trenches, with their deepest locations situated in the so-called hadal zone, the deepest parts of the ocean in water depth >6km, are the least-explored environment on Earth, linking the Earth's surface and its deeper interior. An international team conducting deep-subsurface sampling in a hadal trench at high spatial resolution has revealed exciting insights on the carbon cycling in the trench sediment.
Published Efficient and mild: Recycling of used lithium-ion batteries
(via sciencedaily.com) Lithium-ion batteries (LIBs) provide our portable devices like tablets and mobiles -- and increasingly also vehicles -- with power. As the share of volatile renewable energy needing electricity storage increases, more and more LIBs are needed, lithium prices rise, resources dwindle, and the amount of depleted batteries that contain toxic substances increases. Researchers introduce a novel approach for the recovery of lithium from used LIBs.
Published Graphene: Perfection is futile
(via sciencedaily.com) It has long been known that graphene has excellent electronic properties. However, it was unclear until now how stable these properties are. Are they destroyed by disturbances and additional effects, which are unavoidable in practice, or do they remain intact? Scientists have now succeeded in developing a comprehensive computer model of realistic graphene structures. It turned out that the desired effects are very stable. Even graphene pieces that are not quite perfect can be used well for technological applications.
Published Golden rules for building atomic blocks
(via sciencedaily.com) Physicists have developed a technique to precisely control the alignment of supermoiré lattices by using a set of golden rules, paving the way for the advancement of next generation moiré quantum matter.
Published New quantum device generates single photons and encodes information
(via sciencedaily.com) A new approach to quantum light emitters generates a stream of circularly polarized single photons, or particles of light, that may be useful for a range of quantum information and communication applications. A team stacked two different, atomically thin materials to realize this chiral quantum light source.
Published New study finds ways to suppress lithium plating in automotive batteries for faster charging electric vehicles
(via sciencedaily.com) A new study has found a way to prevent lithium plating in electric vehicle batteries, which could lead to faster charging times.
Published Graphene discovery could help generate hydrogen cheaply and sustainably
(via sciencedaily.com) Researchers have finally solved the long-standing puzzle of why graphene is so much more permeable to protons than expected by theory.
Published Carbon-based quantum technology
(via sciencedaily.com) Graphene nanoribbons have outstanding properties that can be precisely controlled. Researchers have succeeded in attaching electrodes to individual atomically precise nanoribbons, paving the way for precise characterization of the fascinating ribbons and their possible use in quantum technology.
Published Study ties fracking to another type of shaking
(via sciencedaily.com) Original source New research confirms fracking causes slow, small earthquakes or tremors, whose origin was previously a mystery to scientists. The tremors are produced by the same processes that could create large, damaging earthquakes.
Published Human scent receptors could help 'sniff out' nerve gases in new sensor
(via sciencedaily.com) By some estimates, the human nose can detect up to a trillion different smells with its hundreds of scent receptors. But even just catching a quick whiff of certain chemicals known as nerve agents can be lethal, even in tiny amounts. Researchers have now developed a sensitive and selective nerve gas sensor using these human scent receptors. It reliably detected a substitute for deadly sarin gas in simulated tests.
Published Fiber optic cables detect and characterize earthquakes
(via sciencedaily.com) Original source The same fiber optic networks that provide internet can simultaneously act as earthquake sensors, as demonstrated in a new study.
Published California's winter waves may be increasing under climate change
(via sciencedaily.com) Original source A new study uses nearly a century of data to show that the average heights of winter waves along the California coast have increased as climate change has heated up the planet.
Published How to distinguish slow and fast earthquakes
(via sciencedaily.com) Original source Slow earthquakes are slow-slip phenomena that last many days or months, and you barely notice them. In 2007, researchers proposed how the magnitude and duration of earthquakes vary, which can help differentiate slow and fast earthquakes. Seismologists now bolster the proposed relation with more data. They suggest the presence of a speed limit to slow earthquakes and reveal physical processes that differentiate slow and fast earthquakes. Since slow earthquakes could indicate future fast earthquakes, monitoring and understanding them helps accurately forecast devastating earthquakes and tsunamis.
Published Scientists caught Hofstadter's butterfly in one of the most ancient materials on Earth
(via sciencedaily.com) Researchers have revisited one of the most ancient materials on Earth -- graphite, and discovered new physics that has eluded the field for decades.
Published Washable, transparent, and flexible OLED with MXene nanotechnology?
(via sciencedaily.com) Transparent and flexible displays, which have received a lot of attention in various fields including automobile displays, bio-healthcare, military, and fashion, are in fact known to break easily when experiencing small deformations. To solve this problem, active research is being conducted on many transparent and flexible conductive materials such as carbon nanotubes, graphene, silver nanowires, and conductive polymers.