A team headed by Professor Silke Christiansen has developed a transparent electrode with high electrical conductivity for solar cells and other optoelectronic components -- that uses minimal amounts of material. It consists of a random network of silver nanowires that is coated with aluminium-doped zinc oxide. The novel electrode requires about 70 times less silver than conventional silver grid electrodes, but possesses comparable electrical conductivity.
An international research group has demonstrated that protein machines, regardless of their specific functions, can collectively induce fluctuating hydrodynamic flows and substantially enhance the diffusive motions of particles in the cell.
By analyzing the natural mechanics of the water strider that enable it to launch off water's surface, an international team of Seoul National University and Harvard University researchers have emulated this extreme form of locomotion in novel robotic insects.
Researchers from Berkeley Lab and Columbia University have created the world's highest-performance single-molecule diode. Development of a functional single-molecule diode is a major pursuit of the electronics industry.
Graphene has been called the miracle material but the single-atomic layer material is still seeking its place in the materials world. Now a method to make 'defective' graphene could provide the answer. Today, in the journal Nanotechnology, a team of researchers report that they have developed a simple electrochemical approach which allows defects to intentionally be created in the graphene, altering its electrical and mechanical properties and making the material even more useful.
Researchers at Arizona State University's Ira A. Fulton Schools of Engineering have proven that semiconductor lasers are capable of emitting over the full visible color spectrum, which is necessary to produce a white laser.
Working at the Advanced Light Source, Berkeley Lab researchers have observed 'Luttinger-liquid' plasmons in metallic single-walled nanotubes. This holds great promise for novel plasmonic and nanophotonic devices over a broad frequency range, including telecom wavelengths.
A recent study demonstrates the rapid control of phase-changes in resonantly bonded materials.
Sergei Maslov, a computational biologist at the US Department of Energy's Brookhaven National Laboratory and adjunct professor at Stony Brook University, and Alexei Tkachenko, a scientist at Brookhaven's Center for Functional Nanomaterials, have developed a model that explains how simple monomers could rapidly make the jump to more complex self-replicating polymers. What their model points to could have intriguing implications for the origins of life on Earth and CFN's work in engineering artificial self-assembly at the nanoscale.
Solar energy could be made cheaper if solar cells could be coaxed to generate more power. A huge gain in this direction has been made by a team of chemists at the University of California, Riverside that has found an ingenious way to make solar energy conversion more efficient. The researchers combined inorganic semiconductor nanocrystals with organic molecules to 'upconvert' photons in the visible and near-infrared regions of the solar spectrum.