Some molecules have unique and technologically useful optical properties; the medicinal properties of drugs depend on the direction of the twist; and within us twisted DNA can interact with different proteins. This twisting is called chirality and researchers at Case Western Reserve University have found they can use a macroscopic brute force to impose and induce a twist in an otherwise non-chiral molecule.
Einem Team von Physikern ist der Nachweis gelungen, dass auch die Elektronen in grossen Molekuelen - beispielsweise in organischen Halbleitern - mit hoher Praezision durch einzelne Orbitale beschrieben werden koennen.
Researchers at the Berkeley Lab have developed a promising new inexpensive technique for fabricating large-scale flexible and stretchable backplanes using semiconductor-enriched carbon nanotube solutions that yield networks of thin film transistors with superb electrical properties, including a charge carrier mobility that is dramatically higher than that of organic counterparts.
A team of scientists have made it easier to study atomic or subatomic-scale properties of the building blocks of matter (which also include protons, neutrons and electrons) known as fermions by slowing down the movement of a large quantity of gaseous atoms at ultra-low temperature.
Researchers of the University of Zurich have discovered a new substance for labelling and visualization of DNA synthesis in whole animals. Applications for this technique include identifying the sites of virus infections and cancer growth, due to the abundance of DNA replication in these tissues. This approach should therefore lead to new strategies in drug development.
Physicists at the Technische Universitaet Muenchen have created a nano switch based on a single porphyrin ring. If one of two protons from the inside of the ring is removed, the remaining proton can take on any one of four positions, initiated by a single tunnel electron from the tip of a scanning tunneling microscope.