In this review article, we discuss the synthesis and dynamic nature of macromolecular systems that have mechanically linked polymer chains capable of undergoing a topology transformation driven by a ...

Low-friction, high-stiffness ball guides support on one rail (top) or two (bottom). The trade-offs for this performance are higher cost and more noise. The shortest path between two points is a ...

The ability to mount and move equipment is essential to any modern manufacturing plant. Many factory and machine setups have doors, cages, containers, and panels that move to allow workers access to ...