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.
Publication of the report 'Nanotechnologies for pesticides and veterinary medicines: regulatory considerations' marks the culmination of four years of APVMA-led research, consultation and collaboration.
Researchers have designed a nanoparticle transport system for gene delivery that destroys deadly brain gliomas in a rat model, significantly extending the lives of the treated animals. The nanoparticles are filled with genes for an enzyme that converts a prodrug called ganciclovir into a potent destroyer of the glioma cells.