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Categories: Archaeology: General, Energy: Technology
Published Atom-thin walls could smash size, memory barriers in next-gen devices
(via sciencedaily.com) For all of the still-indistinguishable-from-magic wizardry packed into the three pounds of the adult human brain, it obeys the same rule as the other living tissue it controls: Oxygen is a must. So it was with a touch of irony that a scientists offered his explanation for a technological wonder -- movable, data-covered walls mere atoms wide -- that may eventually help computers behave more like a brain. 'There was unambiguous evidence that oxygen vacancies are responsible for this,' Tsymbal said.
Published Chiral phonons create spin current without needing magnetic materials
(via sciencedaily.com) Researchers chiral phonons to convert wasted heat into spin information -- without needing magnetic materials. The finding could lead to new classes of less expensive, energy-efficient spintronic devices for use in applications ranging from computational memory to power grids.
Published Research reveals thermal instability of solar cells but offers a bright path forward
(via sciencedaily.com) Researchers reveal the thermal instability that happens within the cells' interface layers, but also offers a path forward towards reliability and efficiency for halide perovskite solar technology.
Published Novel microscope developed to design better high-performance batteries
(via sciencedaily.com) A research team has developed an operando reflection interference microscope (RIM) that provides a better understanding of how batteries work, which has significant implications for the next generation of batteries.
Published Make them thin enough, and antiferroelectric materials become ferroelectric
(via sciencedaily.com) Antiferroelectric materials have electrical properties that make them advantageous for use in high-density energy storage applications. Researchers have now discovered a size threshold beyond which antiferroelectrics lose those properties, becoming ferroelectric.
Published Fighting climate change: Ruthenium complexes for carbon dioxide reduction to valuable chemicals
(via sciencedaily.com) Excessive use of fossil fuels leads to undesired carbon dioxide (CO2) generation, accelerating climate change. One way to tackle this is by converting CO2 into value-added chemicals. On this front, researchers have recently utilized a novel redox couple, for the purpose.
Published Controllable 'defects' improve performance of lithium-ion batteries
(via sciencedaily.com) Some defects can be good. A new study shows that laser-induced defects in lithium-ion battery materials improve the performance of the battery.
Published Severe weather straining electrical grids: New research mitigates demand surges, increasing grid reliability and reducing costs
(via sciencedaily.com) Concerns are mounting among policymakers and utility companies amid the impact of severe weather on the nation's electrical grids. In recent months, electrical grids in Texas have been tested to the point of near failure. So it seems like perfect timing that new research identifies a new method that provides the best way to utilize 'direct load control contracts' to mitigate electricity demand surges, increase grid reliability and reduce electricity cost. All of this right down to the individual household.
Published Caribou have been using same Arctic calving grounds for 3,000 years
(via sciencedaily.com) Caribou have been using the same Arctic calving grounds for more than 3,000 years. Female caribou shed their antlers within days of giving birth, leaving behind a record of their annual travels across Alaska and Canada's Yukon that persists on the cold tundra for hundreds or even thousands of years. Researchers recovered antlers that have sat undisturbed on the arctic tundra since the Bronze Age.
Published New research suggests drought accelerated empire collapse
(via sciencedaily.com) Original source The collapse of the Hittite Empire in the Late Bronze Age has been blamed on various factors, from war with other territories to internal strife. Now, scientists have used tree ring and isotope records to pinpoint a more likely culprit: three straight years of severe drought.
Published New sodium, aluminum battery aims to integrate renewables for grid resiliency
(via sciencedaily.com) A new sodium battery technology shows promise for helping integrate renewable energy into the electric grid. The battery uses Earth-abundant raw materials such as aluminum and sodium.
Published Changing climate conditions likely facilitated early human migration to the Americas at key intervals, research suggests
(via sciencedaily.com) Original source Researchers have pinpointed two intervals when ice and ocean conditions would have been favorable to support early human migration from Asia to North America late in the last ice age, a new paper shows.
Published Prehistoric human migration in Southeast Asia driven by sea-level rise
(via sciencedaily.com) An interdisciplinary team of scientistshas found that rapid sea-level rise drove early settlers in Southeast Asia to migrate during the prehistoric period, increasing the genetic diversity of the region today.
Published Remapping the superhighways travelled by the first Australians reveals a 10,000-year journey through the continent
(via sciencedaily.com) New research has revealed that the process of 'peopling' the entire continent of Sahul -- the combined mega continent that joined Australia with New Guinea when sea levels were much lower than today -- took 10,000 years. Sophisticated models show the scale of the challenges faced by the ancestors of Indigenous people making their mass migration across the supercontinent more than 60,000 years ago. This pattern led to a rapid expansion both southward toward the Great Australian Bight, and northward from the Kimberley region to settle all parts of New Guinea and, later, the southwest and southeast of Australia.
Published Vikings crossing the North Sea to Britain brought their horses, dogs and other animals
(via sciencedaily.com) An analysis of cremated bone fragments from burial mounds in Derbyshire, UK, provides the first solid evidence that Vikings crossed the North Sea with horses, dogs and other animals as early as the ninth century AD. Researchers analyzed samples of human and animal remains, finding that they most likely originated from Scandinavia and that they died soon after arrival in Britain.
Published A quasiparticle that can transfer heat under electrical control
(via sciencedaily.com) Scientists have found the secret behind a property of solid materials known as ferroelectrics, showing that quasiparticles moving in wave-like patterns among vibrating atoms carry enough heat to turn the material into a thermal switch when an electrical field is applied externally.
Published Passive radiative cooling can now be controlled electrically
(via sciencedaily.com) Energy-efficient ways of cooling buildings and vehicles will be required in a changing climate. Researchers have now shown that electrical tuning of passive radiative cooling can be used to control temperatures of a material at ambient temperatures and air pressure.
Published Powering wearable technology with MXene textile supercapacitor 'patch'
(via sciencedaily.com) Researchers are one step closer to making wearable textile technology a reality. Materials scientists have reported a new design of a flexible wearable supercapacitor patch. It uses MXene to create a textile-based supercapacitor that can charge in minutes and power an Arduino microcontroller temperature sensor and radio communication of data for almost two hours.
Published Researchers demo new type of carbon nanotube yarn that harvests mechanical energy
(via sciencedaily.com) Nanotechnology researchers have made novel carbon nanotube yarns that convert mechanical movement into electricity more effectively than other material-based energy harvesters.
Published Transistors repurposed as microchip 'clock' address supply chain weakness
(via sciencedaily.com) A new technique uses standard chip fab methods to fabricate the building block of a timing device, critical to all microprocessors. Currently, this timing device, known as an acoustic resonator, must be produced separately, often overseas, creating a supply chain and security weakness. The technique would allow for this timing device to be integrated with the microprocessor using standard CMOS processing, rather than later bunded with the microprocessor.