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Categories: Energy: Technology, Offbeat: Paleontology and Archeology
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 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 319-million-year-old fish preserves the earliest fossilized brain of a backboned animal
(via sciencedaily.com) The CT-scanned skull of a 319-million-year-old fossilized fish, pulled from a coal mine in England more than a century ago, has revealed the oldest example of a well-preserved vertebrate brain.
Published New ancient 'marine crocodile' discovered on UK's Jurassic Coast -- and it's one of the oldest specimens of its type ever found
(via sciencedaily.com) A new study has uncovered a new thalattosuchian -- an ancient 'sister' of modern-day crocodiles' ancestors.
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.
Published What crocodile DNA reveals about the Ice Age
(via sciencedaily.com) What drives crocodile evolution? Is climate a major factor or changes in sea levels? Determined to find answers to these questions, researchers discovered that while changing temperatures and rainfall had little impact on the crocodiles' gene flow over the past three million years, changes to sea levels during the Ice Age had a different effect.
Published Artificial photosynthesis uses sunlight to make biodegradable plastic
(via sciencedaily.com) Scientists have succeeded in synthesizing fumaric acid, a raw material for plastics, from CO2 powered by solar energy. Typically, fumaric acid is synthesized from petroleum as a raw material to make polybutylene succinate, a biodegradable plastic, but this research shows that it can be synthesized from CO2 and biomass-derived compounds using renewable energy.
Published Plasma thrusters used on satellites could be much more powerful
(via sciencedaily.com) Original source It was believed that Hall thrusters, an efficient kind of electric propulsion widely used in orbit, need to be large to produce a lot of thrust. Now, a new study suggests that smaller Hall thrusters can generate much more thrust -- potentially making them candidates for interplanetary missions.
Published Recyclable mobile phone batteries a step closer with rust-busting invention
(via sciencedaily.com) Mobile phone batteries with a lifetime up to three times longer than today's technology could be a reality thanks to a recent innovation.
Published Spin transport measured through molecular films now long enough to develop spintronic devices
(via sciencedaily.com) Original source A research group has succeeded in measuring spin transport in a thin film of specific molecules -- a material well-known in organic light emitting diodes -- at room temperature. They found that this thin molecular film has a spin diffusion length of approximately 62 nm, a length that could have practical applications in developing spintronics technology. In addition, while electricity has been used to control spin transport in the past, the thin molecular film used in this study is photoconductive, allowing spin transport control using visible light.
Published Polysulfates could find wide use in high-performance electronics components
(via sciencedaily.com) Flexible compounds made with Nobel-winning click chemistry can be used in energy-storing capacitors at high temperatures and electric fields.
Published Researchers uncover 92 fossil nests belonging to some of India's largest dinosaurs
(via sciencedaily.com) The discovery of more than 250 fossilized eggs reveals intimate details about the lives of titanosaurs in the Indian subcontinent, according to a new study.
Published Mummified crocodiles provide insights into mummy-making over time
(via sciencedaily.com) Crocodiles were mummified in a unique way at the Egyptian site of Qubbat al-Hawa during the 5th Century BC, according to a new study.
Published Fossils reveal dinosaurs of prehistoric Patagonia
(via sciencedaily.com) Original source A study is providing a glimpse into dinosaur and bird diversity in Patagonia during the Late Cretaceous, just before the non-avian dinosaurs went extinct. The fossils represent the first record of theropods -- a dinosaur group that includes both modern birds and their closest non-avian dinosaur relatives -- from the Chilean portion of Patagonia. The researchers' finds include giant megaraptors with large sickle-like claws and birds similar to todays ducks and geese.
Published Ancient Siberian genomes reveal genetic backflow from North America across the Bering Sea
(via sciencedaily.com) The movement of people across the Bering Sea from North Asia to North America is a well-known phenomenon in early human history. Nevertheless, the genetic makeup of the people who lived in North Asia during this time has remained mysterious due to a limited number of ancient genomes analyzed from this region. Now, researchers describe genomes from ten individuals up to 7,500 years old that help to fill the gap and show geneflow from people moving in the opposite direction from North America to North Asia.
Published Origins of the building blocks of life
(via sciencedaily.com) A new study posits that interstellar cloud conditions may have played a significant role on the presence of key building blocks of life in the solar system.
Published DNA from archaeological remains shows that immigration to Scandinavia was exceptional during the Viking period
(via sciencedaily.com) A new study based on 297 ancient Scandinavian genomes analysed together with the genomic data of 16,638 present day Scandinavians resolve the complex relations between geography, ancestry, and gene flow in Scandinavia -- encompassing the Roman Age, the Viking Age and later periods. A surprising increase of variation during the Viking period indicates that gene flow into Scandinavia was especially intense during this period.