Most people see defects as flaws. A few Michigan Technological Univ. researchers, however, see them as opportunities. Twin boundaries may present an opportunity to improve lithium-ion batteries. The twin boundary defects act as energy highways and could help get better performance out of the batteries. This finding turns a previously held notion of material defects on its head.
Last summer, MIT researchers published a paper describing an algorithm that can recover...
A new class of magnets that expand their volume when placed in a magnetic field and generate...
In the story of the Marvel Universe superhero known as the Hulk, exposure to gamma radiation transforms scientist Bruce Banner into a far more powerful version of himself. In a study at Lawrence Berkeley National Laboratory, exposure to alpha-particle radiation has been shown to transform certain thermoelectric materials into far more powerful versions of themselves.
Researchers have found a way to couple the properties of different 2-D materials to provide an exceptional degree of control over light waves. They say this has the potential to lead to new kinds of light detection, thermal management systems and high-resolution imaging devices.
Researchers from Swinburne Univ. of Technology and the Univ. of Science and Technology of China have developed a low-cost technique that holds promise for a range of scientific and technological applications. They have combined laser printing and capillary force to build complex, self-assembling microstructures using a technique called laser printing capillary-assisted self-assembly (LPCS).
Scientists at MIT have developed a systematic approach to research its structure, blending computational modeling and mechanical analysis to 3D-print synthetic spider webs. These models offer insight into how spiders optimize their own webs.
Soft matter encompasses a broad swath of materials, including liquids, polymers, gels, foam and biomolecules. At the heart of soft materials, governing their overall properties and capabilities, are the interactions of nano-sized components. Observing the dynamics behind these interactions is critical to understanding key biological processes.
Inspired by the way iridescent bird feathers play with light, scientists have created thin films of material in a wide range of pure colors with hues determined by physical structure rather than pigments. Structural color arises from the interaction of light with materials that have patterns on a minute scale, which bend and reflect light to amplify some wavelengths and dampen others.
Think about your favorite toys as a child. Did they light up or make funny noises when you touched them? Maybe they changed shape or texture. In ACS Central Science, researchers report a new material that combines many of these characteristics. Beyond being fun, these materials, called organic “supercooled” liquids, may be useful for optical storage systems and biomedical sensors.
Researchers have demonstrated a new metal matrix composite that is so light that it can float on water. A boat made of such lightweight composites will not sink despite damage to its structure. The new material also promises to improve automotive fuel economy because it combines light weight with heat resistance.
A moth’s eye and lotus leaf were the inspirations for an antireflective water-repelling, or superhydrophobic, glass coating that holds significant potential for solar panels, lenses, detectors, windows, weapons systems and many other products. The discovery is based on a mechanically robust nanostructured layer of porous glass film. The coating can be customized to be superhydrophobic, fog-resistant and antireflective.
Researchers have demonstrated a new process for the expanded use of lightweight aluminum in cars and trucks at the speed, scale, quality and consistency required by the auto industry. The process reduces production time and costs while yielding strong and lightweight parts, for example delivering a car door that is 62% lighter and 25% cheaper than that produced with today's manufacturing methods.
The editors of R&D Magazine have announced that today, May 18, 2015, is the last day to accept 2015 R&D 100 Award entries. The R&D 100 Awards have a 50 plus year history of awarding the 100 most technologically significant products of the year.
Technology in common household humidifiers could enable the next wave of high-tech medical imaging and targeted medicine, thanks to a new method for making tiny silicone microspheres developed by chemists at the Univ. of Illinois. Microspheres, tiny spheres as small as a red blood cell, have shown promise as agents for targeted drug delivery to tissues, as contrast agents for medical imaging and in industrial applications.
A team of researchers from Lawrence Livermore National Laboratory and Univ. of California, Davis, have found that covering an implantable neural electrode with nanoporous gold could eliminate the risk of scar tissue forming over the electrode’s surface. The team demonstrated that the nanostructure of nanoporous gold achieves close physical coupling of neurons by maintaining a high neuron-to-astrocyte surface coverage ratio.
Researchers at the Univ. of Rochester have shown that defects on an atomically thin semiconductor can produce light-emitting quantum dots. The quantum dots serve as a source of single photons and could be useful for the integration of quantum photonics with solid-state electronics: a combination known as integrated photonics.
Engineers at the Univ. of Maryland have created a battery that is made entirely out of one material, which can both move electricity and store it. Envision an Oreo cookie. Most batteries have at either end a layer of material for the electrodes like the chocolate cookies to help move ions though the creamy frosting (the electrolyte). The team made a single material that incorporates the properties of both the electrodes and electrolyte.
What if peanut brittle, under certain conditions, behaved like taffy? Something like that happens to a 2-D dichalcogenide analyzed by scientists at Rice Univ. Rice researchers calculated that atomically thin layers of molybdenum disulfide can take on the qualities of plastic through exposure to a sulfur-infused gas at the right temperature and pressure.
One of the fastest-growing areas of solar energy research is with materials called perovskites. These promising light harvesters could revolutionize the solar and electronics industries because they show potential to convert sunlight into electricity more efficiently and less expensively than today’s silicon-based semiconductors.
Taking child's play with building blocks to a whole new level, the nanometer scale, scientists at Brookhaven National Laboratory have constructed 3-D "superlattice" multicomponent nanoparticle arrays where the arrangement of particles is driven by the shape of the tiny building blocks. The method uses linker molecules made of complementary strands of DNA to overcome the blocks' tendency to pack together.
A new type of graphene aerogel will make for better energy storage, sensors, nanoelectronics, catalysis and separations. Lawrence Livermore National Laboratory researchers have made graphene aerogel microlattices with an engineered architecture via a 3D printing technique known as direct ink writing.
Researchers from North Carolina State Univ. have discovered that electron spin brings a previously unknown degree of order to the high entropy alloy nickel iron chromium cobalt (NiFeCrCo), and may play a role in giving the alloy its desirable properties.
Metallic glass, a class of materials that offers both pliability and strength, is poised for a friendly takeover of the chemical landscape. Yale Univ. engineers have found a unique method for designing metallic glass nanostructures across a wide range of chemicals. The process will enable the fabrication of an array of new materials, with applications for everything from fuel cells to biological implants.
Engineers at the Univ. of California, San Diego have discovered a method to increase the amount of electric charge that can be stored in graphene. The research may provide a better understanding of how to improve the energy storage ability of capacitors for potential applications in cars, wind turbines and solar power.
Modern research has found no simple, inexpensive way to alter a material’s thermal conductivity at room temperature. That lack of control has made it hard to create new classes of devices that use phonons, rather than electrons or photons, to harvest energy or transmit information. Phonons have proved hard to harness.
Scientists have demonstrated the potential for softwoods to process more easily into pulp and paper if engineered to incorporate a key feature of hardwoods. The finding could improve the economics of the pulp, paper and biofuels industries and reduce those industries' environmental impact.
Real or counterfeit? Northwestern Univ. scientists have invented sophisticated fluorescent inks that one day could be used as multicolored barcodes for consumers to authenticate products that are often counterfeited. Snap a photo with your smartphone, and it will tell you if the item is real and worth your money.
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