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Archive for the ‘materials’ category: Page 18

Mar 30, 2024

Atomic-scale semiconductor process technology and clean hydrogen technology join hands

Posted by in categories: engineering, materials

To enhance this efficiency, there is a requirement to fabricate electrodes with a . Unfortunately, existing technologies face challenges in achieving a uniform coating of ceramic materials within electrodes possessing intricate porous structures.

A collaborative research team, comprising Professor Jihwan An and Ph.D. candidate Sung Eun Jo from the Department of Mechanical Engineering at Pohang University of Science and Technology (POSTECH), and others, has successfully produced porous electrodes for SOFCs using latest semiconductor processes. This research has been featured as a back cover article in Small Methods.

The process of atomic layer deposition (ALD) involves depositing gaseous materials onto a substrate surface in thin, uniform atomic layers. In a recent study, Professor Jihwan An’s team, known for their prior work in enhancing the efficiency of SOFCs using ALD, developed and applied a powder ALD process and equipment. This enabled them to precisely coat nano-thin films on fine powders.

Mar 29, 2024

NASA’s New Asteroid Sample Is Already Rewriting Solar System History

Posted by in categories: materials, space

Scientists have scarcely begun studying pristine material from asteroid Bennu brought back to Earth by the OSIRIS-REx mission, but have already found several surprises.

By Robin George Andrews

Mar 29, 2024

New material neutralizes 96-percent of virus cells using nanospikes

Posted by in categories: biotech/medical, materials

This ‘smooth’ silicon wafer is actually covered in very tiny, virus-slaying needles.

Mar 28, 2024

3D printed shapeshifting nanoparticles

Posted by in categories: materials, nanotechnology

Stanford materials engineers have 3D printed tens of thousands of hard-to-manufacture nanoparticles long predicted to yield promising new materials that change form in an instant.

Mar 28, 2024

Bosonic Kitaev chain metamaterial to amplify sound waves, a first

Posted by in category: materials

New metamaterial revolutionizes sound wave amplification discovery:


Researchers have realized a new type of metamaterial through which sound waves flow in an unprecedented fashion.

Mar 28, 2024

Elusive 3D Printed Nanoparticles Could Lead to New Shapeshifting Materials

Posted by in categories: materials, nanotechnology

Stanford materials engineers have 3D printed tens of thousands of hard-to-manufacture nanoparticles long predicted to yield promising new materials that change form in an instant.

Mar 27, 2024

New topological metamaterial amplifies sound waves exponentially

Posted by in categories: electronics, materials

Researchers at AMOLF, in collaboration with partners from Germany, Switzerland, and Austria, have realized a new type of metamaterial through which sound waves flow in an unprecedented fashion. It provides a novel form of amplification of mechanical vibrations, which has the potential to improve sensor technology and information processing devices.

Mar 25, 2024

Weird new electron behaviour in stacked graphene thrills physicists

Posted by in categories: materials, quantum physics

This 2D material is only the second to exhibit the fractional quantum anomalous Hall effect, and theorists are still debating how it works.

Mar 25, 2024

Exploring Extraterrestrial Oceans: Ice-Grains as Potential Carriers of Life

Posted by in categories: materials, space

“For the first time we have shown that even a tiny fraction of cellular material could be identified by a mass spectrometer onboard a spacecraft,” said Dr. Fabian Klenner.


How will we find life on Jupiter’s icy moon, Europa, and Saturn’s icy moon, Enceladus? This is what a recent study published in Science Advances hopes to address as a team of international researchers investigate how ice grains that are discharged from the active plumes of these small moons could possess enough organic material for life to exist. This study holds the potential to help astrobiologists develop the necessary instruments and methods to find life on these small moons, specifically with NASA’s Europa Clipper scheduled to launch this October, whose goal will be to investigate Europa’s habitability potential.

Artist’s illustration of Saturn’s moon, Enceladus, seen here upside down as the plumes are on the south pole. (Credit: NASA/JPL-Caltech)

Continue reading “Exploring Extraterrestrial Oceans: Ice-Grains as Potential Carriers of Life” »

Mar 22, 2024

Discovery of a hidden quantum critical point in two-dimensional superconductors

Posted by in categories: materials, quantum physics

Weak fluctuations in superconductivity, a precursor phenomenon to superconductivity, have been successfully detected by a research group at the Tokyo Institute of Technology (Tokyo Tech). This breakthrough was achieved by measuring the thermoelectric effect in superconductors over a wide range of magnetic fields and over a wide range of temperatures, from much higher than the superconducting transition temperature to very low temperatures near absolute zero. The results of this study were published online in Nature Communications on March 16, 2024.

This revealed the full picture of fluctuations in superconductivity with respect to temperature and magnetic field, and demonstrated that the origin of the anomalous metallic state in magnetic fields—which has been an unsolved problem in the field of two-dimensional superconductivity for 30 years—is the existence of a quantum , where are at their strongest.

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