A quasiparticle called an exciton - responsible for the transfer of energy within devices such as solar cells, LEDs, and semiconductor circuits - has been understood theoretically for decades. But exciton movement within materials has never been directly observed.
The Nanophotonics Group of the Laser Zentrum Hannover has developed a method to print nanoparticles made of different materials with controlled, reproducible sizes and to precisely deposit these particles on a receiver substrate. As a result, for the first time, the scientists succeeded in generating and positioning perfectly round silicon nanoparticles with a diameter of 165 nm.
Research into using metamaterials in optics has already produced the possibility of an invisibility cloak. To take these ideas further into allied areas of advanced materials GBP 2.5 million is being invested by the Engineering and Physical Sciences Research Council.
New journal covers a wide range of responsible innovation topics such as the broader and more subtle issues of the moral, cultural, political, religious, democratic and sustainability implications of innovation and research.
Biologists at UC San Diego have succeeded in visualizing the movement within plants of a key hormone responsible for growth and resistance to drought. The achievement will allow researchers to conduct further studies to determine how the hormone helps plants respond to drought and other environmental stresses driven by the continuing increase in the atmosphere?s carbon dioxide, or CO2, concentration.
A technique using anesthesia-containing nanoparticles - drawn to the targeted area of the body by magnets - could one day provide a useful alternative to nerve block for local anesthesia in patients, suggests an experimental study.
Researchers have succeeded in creating a surface on nano-sized cellulose crystals that imitates a biological structure. The surface adsorbs viruses and disables them. The results can prove useful in the development of antiviral ointments and surfaces, for instance.
A common assumption is that once a nanocarrier is created, it maintains its size and shape on the shelf as well as in the body. However, recent work has shown that routine procedures in handling and processing nanocarrier solutions can have a significant influence on the size and shape of these miniscule structures.