Magnetic Tweezers (IMAGE)

U.S. Army Research Laboratory

Magnetic Tweezers

Caption

This is a schematic of a magnetic tweezers measurement of a growing polymer (black string) tethered between a surface and a ruthenium-based catalyst that is anchored to a magnetic particle. The catalyst inserts new monomers (blue spheres), leading to the extension lengthening of the polymer. Researchers are able to visually observe the wait-and-jump dynamics of the growing polymer.

Credit

Courtesy of Cornell University

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