nanotimes News in Brief
MIT researchers report the development of a new light source, a fiber only 400µm across. The newly developed fiber has a hollow core; surroun- ding this core are alternating layers of materials with different optical properties, which together act as a mirror. In the core is a droplet of fluid that can be moved up and down the fiber. When the droplet receives energy, or is “pumped”, it emits light. The light bounces back and forth between the mirrors, emerging from the core as a 360-degree laser beam.
The fiber thus opens the possibility of 3-D displays woven from flexible fibers that project different information to viewers’ left and right eyes. © MIT
Alexander M. Stolyarov, Lei Wei, Ofer Shapira, Fabien Sorin, Song L. Chua, John D. Joannopoulos & Yoel Fink: Microfluidic directional emission control of an azimuthally polarized radial fibre laser, In: Nature Photonics AOP, March 11, 2012, DOI:10.1038/nphoton.2012.24: http://dx.doi.org/10.1038/nphoton.2012.24
12-02 :: February/March 2012
cus on metals. The cooperation between the DNRF and the National Natural Science Foundation of China was established in 2005 and has given rise to 10 Danish-Chinese research centers. The cen- ters are established within four research areas, as two centers are established within cancer research, three centers within nanotechnology, two centers within renewable energy, and finally three centers have started up within the field of information and communication technology (ICT) in 2011.
Brazil and China plan to work together to develop new technologies in the nanotechnology sector, ac- cording to a decree published in the official Brazili- an newspaper by the Ministry for Science, Techno- logy and Innovation.
Moreover, the Danish-Chinese Center for Nano- metals, founded in 2009, facilitates academic coo- peration between Danish and Chinese scientists in the area of nanoscience and technology with a fo-
A team of Vanderbilt University (US) physicists reports that they have nailed down the source of the interference inhibiting the rapid flow of elec- trons through graphene-based devices and found a way to suppress it. This discovery allowed them to achieve record-levels of room-temperature elec- tron mobility – the measure of the speed that elec- trons travel through a material – three times greater than those reported in previous graphene-based devices. According to the experts, graphene may have the highest electron mobility of any known material. In practice, however, the measured levels of mobility, while significantly higher than in other materials like silicon, have been considerably below its potential.