A team of researchers has found a way to detect trace gases down to concentrations at the parts-per-quadrillion level using a new variation on the photoacoustic effect, a technique that measures the sound generated when light interacts with molecules.
The silver nanowires are held together in the polymer so that they touch, and as long as the polymer doesn't dissolve, the nanowires will form a path to conduct electricity similar to the traces on a circuit board.
By utilizing terahertz waves in electronics, future data traffic can get a big boost forward. So far, the terahertz (THz) frequency has not been optimally applied to data transmission, but by using graphene, researchers have come one step closer to a possible paradigm shift for the electronic industry.
Recently, in situ observations of mechanochemical reactions have been achieved by X-ray diffraction and Raman spectroscopy. Solid-state reactions can be directly tracked, revealing phase transitions and other material transformations during synthesis in a ball mill jar.
Scientists have developed a calculation method for identifying optimal nanostructures to either maximize or minimize the thermal resistance of target materials. This method reduced the amount of calculation by more than 90% compared to conventional methods.
The anticaking agent E551 silicon dioxide, or silica, has been used widely in the food industry over the past 50 years, and was long thought to be quite safe. Now, however, researchers have discovered that these nanoparticles can affect the immune system of the digestive tract.
In an effort to understand how single cells heal, mechanical engineers have developed a microscopic guillotine that efficiently cuts cells in two. Learning more about single-cell wound repair could lead to self-healing materials and machines.