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Rare-earth-based lasing in multiple bands simultaneously

Researchers successfully demonstrate room-temperature multiband microlasers spanning a large wavelength range using rare earth elements. The lasing process combines downshifting and upconversion, expanding the emission wavelength range. The resulting microlasers exhibit good intensity stability and are suitable for practical applications.

Brushing thin films onto electrodes preserves batteries

Researchers at Rice University have developed a method to create a thin film coating on lithium anodes using powder brushing, which improves battery life and capacity. The coated anodes retained 70% more capacity after 340 charge-discharge cycles than off-the-shelf batteries.

SourceRice University·JournalAdvanced Materials·TypeExperimental study·DateAug 22, 2022

Ultra-thin but tough implantable material could treat spinal cord injury and Parkinson’s disease

Researchers from Griffith University and UNSW Sydney developed a robust and functional material system that overcomes the challenges of long-term implantation in biofluids. The system consists of silicon carbide nanomembranes as the contact surface and silicon dioxide as the protective encapsulation, showing unrivalled stability.

SourceGriffith University·JournalProceedings of the National Academy of Sciences·TypeExperimental study·DateAug 10, 2022

Gwangju Institute of Science and Technology scientists improve the power output of triboelectric nanogenerators with carbon particles

Researchers at Gwangju Institute of Science and Technology improve triboelectric nanogenerators by using mesoporous carbon spheres to enhance charge transport and surface charge densities. The device achieves a 1300-fold higher output current, enabling potential sustainable energy harvesting.

SourceGIST (Gwangju Institute of Science and Technology)·JournalSmall Methods·TypeExperimental study·DateAug 9, 2022

Combining techniques to create more environmentally friendly, heat resistant, and transparent plastics

Researchers at Nagoya University have developed a new technique for creating polymers with controlled molecular weight and high optical activity. The discovery uses a combination of living cationic polymerization and asymmetric cationic polymerization, resulting in optically active polymers with unique properties.

SourceNagoya University·JournalJournal of the American Chemical Society·DateAug 8, 2022

Complex coacervate droplets as a model material for studying the electrodynamic response and manipulation of biological materials

Stabilized coacervate droplets can be steered using an electric field, allowing for controlled manipulation and delivery of biomolecules like enzymes. The technology has potential applications in drug delivery and other encapsulation technologies, as well as explaining the stability of biological condensates.

SourceUniversity of Houston·JournalProceedings of the National Academy of Sciences·DateAug 4, 2022

Engineers repurpose 19th-century photography technique to make stretchy, color-changing films

Researchers developed a new printing technique that applies a 19th-century color photography method to modern holographic materials, producing large-scale images on elastic materials with structural color. The team's results enable the creation of pressure-monitoring bandages, shade-shifting fabrics, or touch-sensing robots.

SourceMassachusetts Institute of Technology·JournalNature Materials·DateAug 1, 2022

Destroying tumor cells: Targeted immunotherapy using injectable materials

Researchers at TIBI developed a minimally invasive method for targeted delivery of immunotherapeutic treatments, resulting in slower tumor growth and higher activation of T-cells. The injectable gelatin biomaterial containing silicate nanoplatelets showed sustained drug release and controlled ICI delivery.

SourceTerasaki Institute for Biomedical Innovation·JournalACS Applied Materials & Interfaces·TypeExperimental study·DateAug 1, 2022

Rensselaer researchers learn to control electron spin at room temperature to make devices more efficient and faster

Researchers at Rensselaer Polytechnic Institute have successfully controlled electron spin at room temperature, a crucial step towards developing more efficient and faster devices. The discovery uses a unique ferroelectric van der Waals layered perovskite crystal to harness the Rashba or Dresselhaus spin-orbit coupling effect.

SourceRensselaer Polytechnic Institute·JournalNature Photonics·DateJul 14, 2022

Strain-sensing smart skin ready to deploy

The new system, S4, offers a high-resolution view of stressed specimens comparable to or better than established technologies like DIC. It also overcomes optical challenges posed by cement in concrete, providing a reliable strain measurement technology.

SourceRice University·JournalScientific Reports·TypeExperimental study·DateJul 14, 2022

Towards autonomous prediction and synthesis of novel magnetic materials

A team of researchers from Tokyo University of Science has developed an efficient integrated materials synthesis system for automatic discovery of new functional magnetic materials. Using artificial intelligence and computational science, they identified promising materials five times more efficiently than traditional trial-and-error a...

SourceTokyo University of Science·JournalScience and Technology of Advanced Materials Methods·TypeComputational simulation/modeling·DateJul 7, 2022

A four-stroke engine for atoms

Scientists have found a new phenomenon where an atomic switch has to be switched back and forth four times to return to its original state. The spin of gadolinium atoms performs one full rotation during this process. This discovery opens up possibilities for material physics and could potentially be used to store information.

SourceVienna University of Technology·JournalNature·TypeExperimental study·DateJul 6, 2022

These energy-packed batteries work well in extreme cold and heat

Researchers at the University of California San Diego have developed temperature-resilient lithium-ion batteries with high energy density, compatible with high-temperature operation. These batteries could enable electric vehicles to travel farther on a single charge in cold climates and reduce overheating in hot climates.

SourceUniversity of California - San Diego·JournalProceedings of the National Academy of Sciences·TypeExperimental study·DateJul 4, 2022

Singapore team develops new technology that upcycles old, expired solar panels into heat-harvesting electricity materials

A team of scientists from A*STAR and NTU Singapore have developed technology to transform expired solar cells into enhanced thermoelectric material, which harvests heat and converts it into electricity. The technology achieved a record-high thermoelectric figure of merit of 0.45 at 873 K.

SourceAgency for Science, Technology and Research (A*STAR), Singapore·JournalAdvanced Materials·TypeExperimental study·DateJun 29, 2022

Laser writing may enable ‘electronic nose’ for multi-gas sensor

Researchers at Penn State have created a highly customizable microscale gas sensing device using laser writing and responsive sensor technologies. The device enables the simultaneous detection of multiple gases, including disease indicators and pollutants, in various environments and substrates.

SourcePenn State·JournalACS Applied Materials & Interfaces·TypeExperimental study·DateJun 29, 2022

Boron nitride nanotube fibers get real

Researchers at Rice University have successfully created the first heat-tolerant, stable fibers from boron nitride nanotubes using a wet-spinning process. The fibers assemble themselves into liquid crystals, making them easier to process and suitable for large-scale applications in aerospace, electronics, and energy-efficient materials.

SourceRice University·JournalNature Communications·TypeExperimental study·DateJun 23, 2022

A case of internal observation using X-ray CT, aiming to discover the vibration damping mechanism

The study used synchrotron radiation X-ray computed tomography (CT) to observe internal nonuniform deformation of a material in several dozens mm. They found that performing deformation evaluations at both macroscale and microscale can provide insights into the vibration damping mechanism of rubber materials.

SourceToyohashi University of Technology (TUT)·JournalPolymer Testing·TypeExperimental study·DateJun 23, 2022

Topological superconductors: fertile ground for elusive Majorana ('angel') particle

Researchers investigate the search for Majorana fermions in iron-based superconductors, which could enable topological quantum computing and ultra-low energy electronics. The existence of Majorana zero-energy modes in topological superconductors makes them a promising candidate material for realizing these technologies.

University of Illinois researchers derive new theory on behavior of new class of materials

Researchers have derived governing equations that describe the macroscopic mechanical behavior of elastomers filled with liquid inclusions directly from their microscopic behavior. This work enables a wide range of novel materials with unique mechanical and physical properties.

SourceUniversity of Illinois Grainger College of Engineering·JournalJournal of the Mechanics and Physics of Solids·DateJun 21, 2022

Solving the puzzle of 2D disorder

An interdisciplinary team of Northwestern University researchers has developed a new method to determine the fingerprint of neighboring disorder in 2D materials. This method enables a universal curve that characterizes disorder potentials, leading to improved performance in transistors and gas sensors.

SourceNorthwestern University·Journal2D Materials·TypeExperimental study·DateJun 16, 2022

New material paves the way for remote-controlled medication and electronic pills

Researchers at Chalmers University of Technology have invented a material that uses electrical signals to separate biomolecules, paving the way for efficient production of biomedicines. The material's ability to function in biological fluids with buffering capacity enables remote-controlled drug release and reduces energy consumption.

SourceChalmers University of Technology·JournalAngewandte Chemie·TypeExperimental study·DateJun 15, 2022

Ink could enable devices powered by heat

Researchers at KTH Royal Institute of Technology have developed a thermoelectric coating that converts low-grade heat into electrical power, with potential to replace batteries in wearables and IoT devices. The coating can be applied to any surface that generates heat, enabling efficient energy harvesting.

SourceKTH, Royal Institute of Technology·JournalACS Applied Materials & Interfaces·DateJun 14, 2022

A better wig — with chemistry

Researchers developed a nanocomposite coating method using Langmuir-Blodgett technology to improve wig durability, reducing UV damage, breakage, and static electricity. The new coating provides better coverage than previous methods and can be scaled up for mass production.

SourceAmerican Chemical Society·JournalACS Applied Materials & Interfaces·DateJun 13, 2022

Towards indoor lighting-powered thin-film, flexible solar cells with piezophototronics

Ritsumeikan University researchers create a novel thin-film flexible piezoelectric-photovoltaic device that can generate electricity from indoor lighting. The device's performance is improved through strain-induced polarization in the ZnMgO layer, increasing open-circuit voltage and overcoming charge recombination issues.

SourceRitsumeikan University·JournalNano Energy·TypeExperimental study·DateJun 8, 2022