Single bend wiring on surfaces

Wiring up single molecules

The possibility of using single molecules as active elements of electronic devices offers a variety of scientific and technological opportunities. In this article, we discuss transistors, where electrons flow through discrete quantum states of a single molecule. First, we will describe molecules, where current flows through one cobalt atom surrounded by two insulating terpyridyl ligands. Depend...

Edge intersection graphs of single bend paths on a grid

We combine the known notion of the edge intersection graphs of paths in a tree with a VLSI grid layout model to introduce the edge intersection graphs of paths on a grid. Let P be a collection of nontrivial simple paths on a grid G. We define the edge intersection graph EPG(P) of P to have vertices which correspond to the members of P, such that two vertices are adjacent in EPG(P) if the corres...

New bend on budding

JCB • VOLUME 170 • NUMBER 7 • 2005 1016 New bend on budding OPII vesicles form from the endoplasmic reticulum (ER). Now, Marcus Lee, Randy Schekman (University of California, Berkeley), and Lelio Orci (University of Geneva, Switzerland) find that insertion of the amphipathic helix of the Sar1 GTPase causes membrane deformation that initiates, and eventually ends, this vesicle formation process....

Nickelocene adsorption on single-crystal surfaces

Conformations of single polymer chains on surfaces

Frontali et al. [137] showed in 1979 that it is possible to characterize the structure of polymers by analyzing high resolution microscopy images. The authors adsorbed DNA molecules onto mica and imaged them using electron microscopy. From the vectorized contours of single chains, they were able to determine both contour and persistence lengths so that the polymers were fully described in the f...