A molecular-sized brush that looks like a shoe brush has properties with great potential for the materials industry and medicine, but polyelectrolyte brushes can be sensitive, and getting them to work right tricky. New research shows what can make them break down, but also what can get them to systematically recover.
A Japanese research team led by the University of Tokyo studied the vibration of four gases using electron microscopy and spectroscopy by collaborating with Hitachi High-Technologies Corp. Combined with simulations, they measured the increased vibration at 1,000°C compared with room temperature. O2 and CH4 showed significant excitation, although the vibration of hot O2 was overestimated by the simulations. N2 and CO showed no increase in vibration, because of rigid bonds. The method can be used to design efficient gaseous reactions.
Researchers have found a simpler way to deposit magnetic iron oxide (magnetite) nanoparticles onto silica-coated gold nanorods, creating multifunctional nanoparticles with useful magnetic and optical properties.
University of Alabama at Birmingham physicists have taken the first step in a five-year effort to create novel compounds that surpass diamonds in heat resistance and nearly rival them in hardness. In a paper in the journal Materials, Yogesh Vohra and colleagues in the UAB College of Arts and Sciences investigated how the addition of boron, while making a diamond film via plasma vapor deposition, changed properties of the diamond material.
New research at the University of Waterloo could lead to the development of batteries that triple the range of electric vehicles.
A new technique by which to 3-D print metals, involving a widely used stainless steel, has been show to achieve exception levels of both strength and ductility, when compared to counterparts from more conventional processes.
UCLA chemists have developed a new method to produce graphene nanoribbons, which are widely viewed as a next-generation material that might one day power the world's electronic devices.
Nature inspires innovation. An international team lead by researchers at Technion -- Israel Institute of Technology, together with ESRF -- the European Synchrotron, Grenoble, France -- scientists, have discovered how a brittle star can create material like tempered glass underwater. The findings are published in Science and may open new bio-inspired routes for toughening brittle ceramics in various applications that span from optical lenses to automotive turbochargers and even biomaterial implants.
For decades, scientists have been trying to make a true molecular chain: a repeated set of tiny rings interlocked together. In a study in Science published online Nov. 30, University of Chicago researchers announced the first confirmed method to craft such a molecular chain.
Researchers at Duke University have devised a way to see through walls without any advance knowledge of what the walls are made out of. Besides having obvious applications in the realm of security, the approach could lead to inexpensive devices to help construction workers easily locate conduits, pipes and wires.