Arsenic shield for rice
Microbe mobilizes ‘iron shield’ to block arsenic uptake in rice
University of Delaware researchers have discovered a soil microbe that mobilizes an “iron shield” to block the uptake of toxic arsenic in rice. (more…)
Tag Archives: block
Golden Potential for Gold Thin Films
Berkeley Lab Researchers Direct the Self-Assembly of Gold Nanoparticles into Device-Ready Thin films
Scientists with the Lawrence Berkeley National Laboratory (Berkeley Lab) and the University of California (UC) Berkeley have directed the first self-assembly of nanoparticles into device-ready materials. Through a relatively easy and inexpensive technique based on blending nanoparticles with block co-polymer supramolecules, the researchers produced multiple-layers of thin films from highly ordered one-, two- and three-dimensional arrays of gold nanoparticles. Thin films such as these have potential applications for a wide range of fields, including computer memory storage, energy harvesting, energy storage, remote-sensing, catalysis, light management and the emerging new field of plasmonics.
“We’ve demonstrated a simple yet versatile supramolecular approach to control the 3-D spatial organization of nanoparticles with single particle precision over macroscopic distances in thin films,” says polymer scientist Ting Xu, who led this research. “While the thin gold films we made were wafer-sized, the technique can easily produce much larger films, and it can be used on nanoparticles of many other materials besides gold.” (more…)
In Glowing, Swirling Dust, New Stars are Born
An image taken by UA astrophotographer Adam Block, chosen by NASA as Astronomy Picture of the Day, brings us the best yet glimpse into a stellar nursery about 450 light years away from Earth.
An image of a stellar nursery about 450 light years away featured as NASA’s Astronomy Picture of the Day on Dec. 8 reveals the beauty and violent story of Sh2-239, a region where stars are being born and ignite the cosmic dust with their new-found energy.
According to University of Arizona astrophotographer Adam Block, who captured the image, it is one of the most detailed and visually appealing pictures obtained of the object, which astronomers have observed and studied for decades. (more…)