A progress article published June 23 in the journal Nature Materials describes recent developments and predicts future advances in phonon wave interference and thermal bandgap materials -- approaches to controlling heat transfer.
Topics include: treating advanced skin cancer, big data and bioenergy, cancer research, 10 reasons to eat quinoa, sleep issues in the nursing field, advances in cancer surgery, genes for sleep, brain receptor for cocaine addiction, and nano imaging on insect adaptations.
A quantum mechanical transport phenomenon demonstrated for the first time in synthetic, atomically-thin layered material at room temperature could lead to novel nanoelectronic circuits and devices, according to researchers at Penn State and three other U.S. and international universities.
A full description of nanoscale thermal transport has defied understanding for decades. In a new study, researchers uncovered a regime of thermal transport near nanoscale structures, where counterintuitively, nanoscale hot spots cool more quickly when placed close together than when they are widely separated. The results suggest new approaches for addressing the significant challenge of heat management in nanosystems, with design implications for integrated circuits and other uses.
In a study that could improve the safety of next-generation batteries, researchers discovered that adding two chemicals to the electrolyte of a lithium metal battery prevents the formation of dendrites – “fingers” of lithium that pierce the barrier between the battery’s halves, causing it to short out, overheat and sometimes burst into flame.
Researchers have solved the long-standing conundrum of how the boundary between grains of graphene affects heat conductivity in thin films of the miracle substance -- bringing developers a step closer to being able to engineer films at a scale useful for cooling microelectronic devices and hundreds of other nano-tech applications.
Efficiently turning sunlight into storable fuels requires catalysts that convert a maximum amount of solar energy into fuel. A lack of standardized analytic conditions and methods has made objectively comparing catalysts challenging. Scientists standardized measurement techniques to allow a quantitative, objective evaluation of such catalysts.
Scientists have observed, in metals for the first time, transient excitons – the primary response of free electrons to light. Detecting excitons in metals could provide clues on how light is turned into energy in solar cells and plants.
A new material with light absorption characteristics ideally suited for making chemical fuels from sunlight was created via a nanowire growth strategy that fused the semiconductors silicon and gallium arsenide together in a new way.
A research team has realized one of the long-standing theoretical predictions in nonlinear optical metamaterials: creation of a nonlinear material that has opposite refractive indices at the fundamental and harmonic frequencies of light.
Trending news releases with the most views in a single day. Topics include: new drug for heart disease, astronomy, sleep, stroke, diabetes, materials science, MERS, and U.S. Politics.
The effort to secure a stable, domestic source of a critical medical isotope reached an important milestone this month as the U.S. Department of Energy's (DOE) Argonne National Laboratory demonstrated the production, separation and purification of molybdenum-99 (Mo-99) using a process developed in cooperation with SHINE Medical Technologies.
Led by James Hone’s group at Columbia Engineering, a team of scientists from Columbia, SNU, and KRISS demonstrated—for the first time—an on-chip visible light source using graphene, an atomically thin and perfectly crystalline form of carbon, as a filament. They attached small strips of graphene to metal electrodes, suspended the strips above the substrate, and passed a current through the filaments to cause them to heat up. (Nature Nanotechnology AOP June 15)
Chemists have witnessed atoms of one chemical element morph into another for the first time ever—a feat that produced an unexpected outcome that could lead to a new way to safely treat cancer with radiation.
Researchers at UCLA and Argonne National Laboratory announced today a new method for creating magnetic skyrmion bubbles at room temperature. The bubbles, a physics phenomenon thought to be an option for more energy-efficient and compact electronics, can be created with simple equipment and common materials.
Scientists at Ames Lab created perovskite nanocrystals that are stable light emitters and stellar light-to-energy converters.
A promising catalyst seemed erratic in reducing the toxins released by burning gasoline and other such fuels. The catalyst’s three different surfaces behaved differently. For the first time, researchers got an atomically resolved view of the three structures. This information may provide insights into why the surfaces have distinct properties.
X-ray studies at the Department of Energy's SLAC National Accelerator Laboratory have for the first time observed an exotic property that could warp the electronic structure of a material in a way that reduces heat buildup and improves performance in ever-smaller computer components.
A team of IBM researchers in Zurich, Switzerland with support from colleagues in Yorktown Heights, New York has developed a relatively simple, robust and versatile process for growing crystals made from compound semiconductor materials that will allow them be integrated onto silicon wafers -- an important step toward making future computer chips that will allow integrated circuits to continue shrinking in size and cost even as they increase in performance.
Researchers at Missouri University of Science and Technology are giving new meaning to the term “read the fine print” with their demonstration of a color printing process using nanomaterials. In this case, the print features are very fine – visible only with the aid of a high-powered electron microscope.
This week, The Minerals, Metals & Materials Society (TMS) released Modeling Across Scales: A Roadmapping Study for Connecting Materials Models and Simulations Across Length and Time Scales.
A team of researchers in China set out to design a cheaper material with properties similar to a graphene aerogel—in terms of its conductivity, as well as a lightweight, anticorrosive, porous structure. In the journal Applied Physics Letters, the researchers describe the new material they created and its performance.
Working with a device that slightly resembles a microscopically tiny tuning fork, researchers at the University of Tsukuba in Japan have recently developed coupled microcantilevers that can make mass measurements on the order of nanograms with only a 1 percent margin of error -- potentially enabling the weighing of individual molecules in liquid environments. The findings are published this week in Applied Physics Letters.
Phosphore's striking properties a step closer to being used to improve electronic and optoelectronic devices thanks to Polytechnique Montréal and Université de Montréal researchers.
Discovered in the 1970s, SERS is a sensing technique prized for its ability to identify chemical and biological molecules in a wide range of fields. It has been commercialized, but not widely, because the materials required to perform the sensing are consumed upon use, relatively expensive and complicated to fabricate. That may soon change. An international research team led by University at Buffalo engineers has developed nanotechnology that promises to make SERS simpler and more affordable. Described in a research paper published today in the journal Advanced Materials Interfaces, the photonics advancement aims to improve our ability to detect trace amounts of molecules in diseases, chemical warfare agents, fraudulent paintings, environmental contaminants and more.
A new study predicts that researchers could use spiraling pulses of laser light to change the nature of graphene, turning it from a metal into an insulator and giving it other peculiar properties that might be used to encode information.
Trending news releases with the most views in a single day. Topics include: genetics, cancer, nanotech, elderly care, marketing research, energy, children's health, and immunology.
Trending news releases with the most views in a single day. Topics include: genetics and cancer, diabetes and blindness, nanotech, engineering, personalized medicine, energy, and e-cigarettes.
The thinnest possible linear thread that still retains a diamond-like structure was created by the extreme compression and decompression of the common chemical benzene. The threads may have outstanding mechanical and electronic properties. Further, the synthesis method opens up possible variations that could lead to new materials.
A new patent blazes a path forward for a way to simultaneously determine the physical structure and chemical makeup of materials close to the atomic level using a combination of microscopy techniques.
In a new twist on the use of DNA in nanoscale construction, scientists at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory and collaborators put synthetic strands of the biological material to work in two ways: They used ropelike configurations of the DNA double helix to form a rigid geometrical framework, and added dangling pieces of single-stranded DNA to glue nanoparticles in place.
Scientists at the U.S. Department of Energy's Brookhaven National Laboratory have just taken a big step toward the goal of engineering dynamic nanomaterials whose structure and associated properties can be switched on demand. In a paper appearing in Nature Materials, they describe a way to selectively rearrange the nanoparticles in three-dimensional arrays to produce different configurations, or phases, from the same nano-components.
It looks like a Slinky suspended in motion. Yet this photonics advancement – called a metamaterial hyperlens – doesn’t climb down stairs. Instead, it improves our ability to see tiny objects.
Trending news releases with the most views in a single day. Topics include: swelling magnets; using genetics to fight dengue fever; cybersecurity; Hubble finds 'Nasty' star; ventilation and patient survival; food security; gamification in business; and cancer research on implants to improve glioma treatment.
Researchers from Oak Ridge National Laboratory, Washington State University and the University of Idaho have developed a process to make a thermoset that can be reshaped and reused. The new plastic is a shape-memory polymer, so named because the material can “remember” its original shape and return to it after being deformed with heat or other forces.
Researchers created thin, flexible electronic devices that efficiently harvest the mechanical energy from natural motions of the human body. In addition to advances in materials processing to enable creating these devices, accurate analytical models were developed to predict the electrical output.
A new class of magnets that expand their volume when placed in a magnetic field and generate negligible amounts of wasteful heat during energy harvesting, has been discovered.
Sandia National Laboratories researchers have made the first measurements of thermoelectric behavior by a nanoporous metal-organic framework (MOF), a development that could lead to an entirely new class of materials for such applications as cooling computer chips and cameras and energy harvesting.
Graphene takes an important step toward commercial applications like wearable wireless devices and sensors connected to the "Internet of Things"
A new process has been developed for spontaneously incorporating and assembling carbon nanotubes and oxygen-scavenging nanoparticles into chloroplasts, the part of plant cells that conduct photosynthesis. Incorporation enhanced electron flow associated with photosynthesis.
A new metal oxide was discovered whose atomic structure includes highly ordered arrays of missing oxygen atoms. This structure allows oxygen ions to move through the material quickly and easily at low temperatures.
Trending news releases with the most views in a single day. Topics include: social media trends, lyme disease, cancer, diabetes, HIV, lasers, Hubble, neurology, and the seafood industry.
A new porous material exhibits high electrical conductivity as a bulk material that is potentially tunable and has unusual temperature dependence, suggesting new fundamental physics.
One of the barriers to using graphene at a commercial scale could be overcome using a method demonstrated by researchers at Oak Ridge National Laboratory.
Berkeley Lab researchers, working at the Molecular Foundry, have invented a technique called “CLAIRE” that extends the incredible resolution of electron microscopy to the non-invasive nanoscale imaging of soft matter, including biomolecules, liquids, polymers, gels and foams.
New technique developed at Brookhaven Lab makes nanomaterial self-assembly 1,000 times faster and could be used for industrial-scale solar panels and electronics
Enabled by high-performance computing, the magnetic couplings in model systems for copper-containing cuprate superconductors were accurately calculated for the first time.
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.
PNNL’s new joining process enables the production of all-aluminum auto parts without rivets and fasteners that increase cost and weight.
Trending news releases with the most views in a single day. Topics include: WWII and PTSD, stem cells, cancer, racial segregation, supplements and glaucoma, medical research, cybersecurity, vision research, and physics.
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