Nano fiber feels forces and hears sounds made by cells

Engineers at the University of California San Diego have developed a miniature device that's sensitive enough to feel the forces generated by swimming bacteria and hear the beating of heart muscle cells.

Artificial muscles show more flex

Artificial muscles made significant gains when a literal twist in the development approach uncovered the tensile—or stretchy—abilities of polymer fibers once they were twisted and coiled into a spring-like geometry. In ...

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