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The textile generates electricity when the fibers are deformed

When the textile is stretched or exposed to pressure, the deformation of the piezoelectric fibres (pink) causes a reorganisation of the charge distribution, thus generating an electrical voltage. The electrically conducting yarn (blue) is required to form a closed circuit. A piezoelectric yarn is made up of 24 fibres as thin as a hair, and each fibre has an electrically conducting core (black).
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Electric textile lights a lamp when stretched

Working up a sweat from carrying a heavy load? That is when the textile works at its best. Swedish researchers have developed a fabric that converts kinetic energy into electric power. The greater the load applied to the textile and the wetter it becomes the more electricity it generates. The results are now published in the Nature Partner journal Flexible Electronics.