The key lies in a material property known as "magnetoelasticity," which turns bending and stretching motion into electrical energy. Magnetoelasticity, first described in 1865 by physicist Emilio Villari, is the change in a material's magnetic flux density when mechanical stress is applied in the presence of an external magnetic field.
The tent fabric acts as an energy harvester. When the material bends, stretches or flexes, its magnetic state changes, and that shift is converted into electrical energy through induction. The tent's floor incorporates magnetoelastic ribbons, while its roof is constructed as a layered architecture that integrates conductive fibers and magnetoelastic film.
Scientists have already shown that magnetoelastic devices can generate electricity from body movement, sound and other mechanical inputs, but the new study scaled this concept to larger fabric systems.
The researchers also framed the design as a response to the impracticalities of existing portable shelters; they often need power, but generators require fuel, batteries add weight and maintenance, and solar panels depend on sunlight.
Related storiesUnlike a solar setup, the tent does not need bright sun to function. Wind, handling and ordinary movement can contribute to the energy output, which means the system could keep collecting electricity even in shaded conditions or after dark, as long as the fabric continues to flex.
Plenty of questions about the tent's durability remain unanswered. In future research, the scientists will need to prove how much electricity the tent can produce in real-world conditions, how durable the textile remains after repeated folding and weather exposure, and whether the design can be manufactured affordably at scale. But they said this prototype suggests a modest shelter could one day do more than keep a person dry.
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