An 18-month NASA research effort to visualize the passenger airplanes of the future has produced some ideas that at first glance may appear to be old fashioned. Instead of exotic new designs seemingly borrowed from science fiction, familiar shapes - but built with high-tech materials - dominate the pages of advanced concept studies.
Electron microscopes are among the most widely used scientific and medical tools for studying and understanding a wide range of materials, from biological tissue to miniature magnetic devices, at tiny levels of detail. Now, researchers at the National Institute of Standards and Technology (NIST) have found a novel and potentially widely applicable method to expand the capabilities of conventional transmission electron microscopes (TEMs). Passing electrons through a nanometer-scale grating, the scientists imparted the resulting electron waves with so much orbital momentum that they maintained a corkscrew shape in free space.
Stanford physicist Ingmar Riedel-Kruse has begun developing 'biotic games' involving paramecia and other living organisms. He hopes the games lead to advances in education and crowd-sourcing of laboratory research while helping to raise the level of public discourse on bio-related issues.
Nanoparticles of gold and palladium (Au-Pd) could lead to a more efficient and environmentally friendly way of producing benzyl benzoate, a chemical compound used widely in the food, pharmaceutical and chemical industries whose applications include a fixative for fragrances, a food additive and a solvent for chemical reactions.
Wissenschaftler des Exzellenzclusters 'Nanosystems Initiative Munich' an derLMU haben eine Methode entwickelt, mit der sie Silikat-Nanoroehrchen trotz ihrer geringen Groesse direkt beim Wachsen zusehen koennen.
Most of our Universe consists of hydrogen atoms, which are often found under extraordinarily high pressure as high as tens of millions of times the atmospheric pressure of Earth. Understanding the exotic physics of such a high-pressure regime will contribute to our understanding of planet formation, hydrogen storage, room temperature superconductivity and other fields, explains Toshiaki Iitaka from the RIKEN Advanced Science Institute in Wako.
Nanopartikel spielen eine wesentliche Rolle bei der Entwicklung zukuenftiger diagnostischer und therapeutischer Methoden fuer Tumorerkrankungen, beispielsweise als Transporter fuer Wirkstoffe oder als Kontrastmittel. Aufnahme und Verteilung von Nanopartikeln im Tumorgewebe haengen dabei stark von der Partikelgroesse ab. Um dies systematisch untersuchen zu koennen, haben Wissenschaftler jetzt einen Satz fluoreszierender Nanopartikel verschiedener Durchmesser zwischen 10 und 150 nm hergestellt.
A new fractional vortex state observed in an unconventional superconductor may offer the first glimpse of an exotic state of matter predicted theoretically for more than 30 years. University of Illinois physicists, led by Raffi Budakian, describe their observations of a new fractional vortex state in strontium ruthenium oxide (SRO).
Researchers at the University of Illinois and Northwestern University have demonstrated bio-inspired structures that self-assemble from simple building blocks: spheres. The helical 'supermolecules' are made of tiny colloid balls instead of atoms or molecules. Similar methods could be used to make new materials with the functionality of complex colloidal molecules.
Advancements in understanding rotational motion in living cells may help researchers shed light on the causes of deadly diseases, such as Alzheimer's, according to Ning Fang, an associate scientist at the U.S. Department of Energy's Ames Laboratory and faculty member at Iowa State University.
Materials with self-healing properties could help extend the durability of products and make repairs easier. Krzysztof Matyjaszewski and his co-workers at Carnegie Mellon University (Pittsburgh, USA) and Kyushu University (Japan) have now developed a polymer that can repair itself when irradiated with UV light - over and over again.