Thin, flexible thermoelectric generators (TEGs) made from organic materials could power wearable devices by using body heat.
But there’s a problem: in flat (planar) designs, it’s hard to create the temperature difference needed to generate electricity.
Researchers have developed a new approach called pseudo-transverse TEGs (pT-TEGs). These use a stretchable material with two different heat-conducting properties. This setup redirects heat flow, turning it sideways into usable voltage, similar to a transverse thermoelectric effect.
This design avoids the usual need to bend or shape the material in 3D to create a temperature gradient. Instead, it works efficiently in a flat, two-dimensional form, making it better suited for wearables.
The devices are also easy to manufacture using solution-based processes, and they remain flexible, scalable, and durable.
Why it matters:
This could lead to practical, lightweight energy sources for wearable electronics, helping power devices using nothing more than body heat.
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