Scientists around the world are using the programmability of DNA to assemble complex nanometer-scale structures. Until now, however, production of these artificial structures has been limited to water-based environments, because DNA naturally functions inside the watery environment of living cells. Researchers have now shown that they can assemble DNA nanostructures in a solvent containing no water.
If laboratory research with mice is borne out in human studies, the results could be used to deliver nano-scale drugs that can distinguish and fight tumor cells in the brain without resorting to surgery.
Computational physicists have developed a novel method that accurately reveals how electrical vortices affect electronic properties of materials that are used in a wide range of applications, including cell phones and military sonar.
Polymer solar cells are a hot area of research due to both their strong future potential and the significant challenges they pose. Using carefully designed materials and an 'inverted' architecture, a team of scientists has achieved efficiency of 10 percent, bringing these cells close to the threshold of commercial viability.