An international team of physicists has used a scanning tunneling microscope to create a minute transistor consisting of a single molecule and a small number of atoms. The observed transistor action is markedly different from the conventionally expected behavior and could be important for future device technologies as well as for fundamental studies of electron transport in molecular nanostructures.
Engineers have created a nanoscale device that can emit light as powerfully as an object 10,000 times its size. It's an advance that could have huge implications for everything from photography to solar power.
Today, chemistry teachers and students can breath a sigh of relief. After teaching and learning about a particular family of molecules for decades, scientists have finally proven that they do in fact exist.
Plants and bacteria make use of sunlight with remarkably high efficiency: nine out of ten absorbed light particles are being put to use in an ordinary bacterium. For years, it has been a pressing question of modern research whether or not effects from quantum physics are responsible for this outstanding performance of natural light harvesters. A team of European research groups have examined these quantum effects in an artificial model system.
The Joint Research Center has published science-based options to improve the clarity and the practical application of the EC recommendation on the definition of a nanomaterial. This is the last JRC report in a series of three, providing the scientific support to the Commission in its review of the definition used to identify materials for which special provisions might apply.
Researchers have found that nanowires made of common semiconductor materials have a pronounced anelasticity - meaning that the wires, when bent, return slowly to their original shape rather than snapping back quickly.
Researchers have developed an effective and environmentally benign method to combat bacteria by engineering nanoscale particles that add the antimicrobial potency of silver to a core of lignin, a ubiquitous substance found in all plant cells. The findings introduce ideas for better, greener and safer nanotechnology and could lead to enhanced efficiency of antimicrobial products used in agriculture and personal care.