Electrochemically Triggered Swinging of a [2]-Catenate

Patterned hydrogel layers produced by electrochemically triggered polymerization.

We report on a lithographic mode of electrochemically triggered free radical polymerization. The polymerization is initiated by the reduction of an electrochemically active initiator. Hydrogel patterns can be written by employing a small insulated counter electrode. The investigations show that the "pen" actually is a small oxygen bubble between the counter electrode and the sample surface. The...

Electrochemically triggered assembly of films: a one-pot morphogen-driven buildup.

Mechanics of swinging a bat

Measurements on the swing of a baseball bat are analyzed to extract the basic mechanics of the swing. The force acting on the bat is determined from the velocity of the center of mass, and the angular velocity of the bat provides additional information on the couple exerted by the two hands. The motion of the bat was calculated for other force-couple combinations to determine their effects on t...

A crystalline hydrogen-bonded network with a poly-catenate topology.

A polycatenate network, whose rings are formed from metal-templated hemispheres linked by hydrogen bonds, is reported.

The Swinging Spring : A Simple