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Archive for the ‘materials’ category: Page 137

Apr 22, 2022

NASA invents ‘revolutionary’ material 1,000 times better than state-of-the art spaceship alloys

Posted by in categories: materials, space travel

NASA scientists have invented a new metal alloy that is 1,000 times more durable than current state-of-the-art materials used in aviation and space exploration.

The US space agency believes that Alloy GRX-810 could revolutionise space travel, as it can withstand far harsher conditions than existing materials used within rocket engines.

The material has twice the strength, three-and-a-half times the flexibility and more than 1,000 times the durability under stress at high temperatures.

Apr 22, 2022

TEF Design creates living wall for San Francisco substation

Posted by in categories: energy, materials

A lush green wall and back-lit fibreglass panels are found on the exterior of an electrical substation extension that was designed by TEF Design to achieve net-zero energy consumption.

Owned by the utility company Pacific Gas and Electric, the Larkin Street Substation Expansion is located on a mid-block site in the city’s Tenderloin neighbourhood. It adjoins a concrete structure built in 1962 to supply power to the northeastern part of San Francisco.

For the constrained site, local firm TEF Design conceived a two-storey addition that totals 12,200 square feet (1,133 square metres). The extension rises 50 feet (15 metres) at its highest point.

Apr 21, 2022

Decarbonizing the electricity supply for aluminium production

Posted by in categories: energy, materials

How China can boost its carbon neutrality efforts by ensuring renewables account for more than 50% of the power supply for aluminium production by 2045.


Decarbonizing the power supply for primary aluminium is critical for the sector to reach net zero. Electricity used during aluminium smelting – the process of extracting the metal from its ore – accounts for more than 60% of the industry’s carbon emissions.

It is particularly important to control the carbon emissions of China’s production of primary aluminium, which comes directly from mined ore rather than using recycled or alloy materials. Primary aluminium produced and consumed in China accounts for approximately 60% of the global market. Due to the high proportion of coal-fired energy used, 12.7 tonnes of carbon is emitted per tonne of aluminium produced in China, versus a global average of 10.3 tonnes, according to the latest figures, which cover the 2005 to 2019 period. This is why decarbonizing the power supply for Chinese primary aluminium production is critical.

Continue reading “Decarbonizing the electricity supply for aluminium production” »

Apr 20, 2022

NASA’s Perseverance Rover Sees Solar Eclipse on Mars

Posted by in categories: materials, space

NASA’s Perseverance Mars rover used its Mastcam-Z camera system to shoot video of Phobos, one of Mars’ two moons, eclipsing the Sun. It’s the most zoomed-in, highest frame-rate observation of a Phobos solar eclipse ever taken from the Martian surface.

Several Mars rovers have observed Phobos crossing in front of the Sun over the past 18 years. Spirit and Opportunity made the first observations back in 2004; Curiosity in 2019 was the first to record video of the event. Each time these eclipses are observed, they allow scientists to measure subtle shifts in Phobos’ orbit over time. The moon’s tidal forces pull on the deep interior of the Red Planet, as well as its crust and mantle; studying how much Phobos shifts over time reveals something about how resistant the crust and mantle are, and thus what kinds of materials they’re made of.

Continue reading “NASA’s Perseverance Rover Sees Solar Eclipse on Mars” »

Apr 20, 2022

NASA’s new material is 1000-times stronger than its previous alloys

Posted by in categories: 3D printing, materials

Using material modelling and 3D printing, researchers were able to produce new material quicker and at a lower cost.

Apr 19, 2022

Lab creates superfluid circuit using fermions to study electron behavior

Posted by in categories: materials, particle physics

Researchers at Dartmouth College have built the world’s first superfluid circuit that uses pairs of ultracold electron-like atoms, according to a study published in Physical Review Letters.

The laboratory test bed gives physicists control over the strength of interactions between atoms, providing a new way to explore the phenomena behind exotic materials such as .

“Much of modern technology revolves around controlling the flow of electrons around circuits,” said Kevin Wright, assistant professor of physics at Dartmouth and senior researcher of the study. “By using electron-like atoms we can test theories in ways that were not possible before.”

Apr 18, 2022

The Future of Electronics: New Fermi Arcs Discovered

Posted by in categories: energy, materials

Newly discovered Fermi arcs that can be controlled through magnetism could be the future of electronics based on electron spins.

These new Fermi arcs were discovered by a team of researchers from Ames Laboratory and Iowa State University, as well as collaborators from the United States, Germany, and the United Kingdom. During their investigation of the rare-earth monopnictide NdBi (neodymium-bismuth), the research team discovered a new type of Fermi arc that appeared at low temperatures when the material became antiferromagnetic, i.e., neighboring spins point in opposite directions.

Fermi surfaces in metals are a boundary between energy states that are occupied and unoccupied by electrons. Fermi surfaces are normally closed contours forming shapes such as spheres, ovoids, etc. Electrons at the Fermi surface control many properties of materials such as electrical and thermal conductivity, optical properties, etc. In extremely rare occasions, the Fermi surface contains disconnected segments that are known as Fermi arcs and often are associated with exotic states like superconductivity.

Apr 16, 2022

Five key buildings designed by German architect Anna Heringer

Posted by in category: materials

The Essential Beauty exhibition of Obel Award-winning architect Anna Heringer’s work is currently on show at Madrid’s Museo ICO. Here, curator Luis Fernández-Galiano selects five highlights from the exhibition.

First opened in February as part of the 2022 edition of Madrid Design Festival, the retrospective exhibition curated by Spanish architect Luis Fernández-Galiano showcases the breadth of German architect Heringer’s work.

Working across the world, she aims to use architecture as a tool to improve lives – using local materials and labour to support and empower communities and people.

Apr 15, 2022

Italian City Implements 3D Printed Benches Made From Recycled Plastic

Posted by in categories: 3D printing, materials

In recent years, more and more environmentally friendly projects are being developed in many countries all around the world. Similar to earlier successful projects, like for example the Netherlands-based Print your City, R3direct from Italy is now also starting to use additive manufacturing as an eco-friendly option to develop street furniture. By using plastic waste as their main material and with the help of modern technology, the company is now 3D printing benches. And the first example of this is already installed in the heart of Lucca, Italy. Called USE (Urban Safety Everyday), these benches are intended to show that technologies can make it possible to significantly reduce plastic waste by reusing the recycled material.


Italian manufacturing company introduces new, eco-friendly public benches made of recycled plastic using 3D printing technologies.

Apr 10, 2022

Ultrafast Photoacoustic Nanometrology of InAs Nanowires Mechanical Properties

Posted by in categories: materials, nanotechnology

InAs nanowires are emerging as go-to materials in a variety of applications ranging from optoelectronics to nanoelectronics, yet a consensus on their mechanical properties is still lacking. The mechanical properties of wurtzite InAs nanowires are here investigated via a multitechnique approach, exploiting electron microscopies, ultrafast photoacoustics, and finite element simulations. A benchmarked elastic matrix is provided and a Young modulus of 97 GPa is obtained, thus clarifying the debated issue of InAs NW elastic properties. The validity of the analytical approaches and approximations commonly adopted to retrieve the elastic properties from ultrafast spectroscopies is discussed. The mechanism triggering the oscillations is unveiled. Nanowire oscillations in this system arise from a sudden expansion of the supporting substrate rather than the nanowire itself.