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.
A team of Northern Illinois University scientists, with a major role played by NIU Ph.D. students, has discovered a new, convenient and inexpensive way to make high performance hydrogen sensors using palladium nanowires.
Tissue engineers seek to develop functioning substitutes for damaged tissues and organs. Generally, this means seeding cells onto 3-dimensional porous scaffolds made of biomaterials, which provide mechanical support and instructive cues for the developing engineered tissue. Now it's time to go to the next level, and make complex tissues that can really do things - contract, release growth factors, conduct electrical signals and more. Things our own cells and tissues do.
The conference Nanomechanical Testing in Materials Research and Development from October 9-14, 2001 in Lanzarote, Canary Islands, Spain, will bring together all people working in the field of nano- and micromechanical testing in materials research. It will provide a forum for discussion of the latest activities in application of nano- and micromechanical testing methods.
Using a highly sophisticated atomic-scale imaging tool on a sea creature's tooth, two Northwestern University researchers have peeled away some of the mystery of organic/inorganic interfaces that are at the heart of tooth and bone structure.