3D-printed wearable hydrogel “power patches” demonstrate harvesting of low-grade heat. (IMAGE)

Science China Press

3D-printed wearable hydrogel “power patches” demonstrate harvesting of low-grade heat.

Caption

(upper left) Photo of DLP 3D-printed hydrogel lattice before (DH) and after soaking in thermoelectric solution (DHFG), along with microstructured such as a microneedle and a flower-shaped hydrogel thermocell. (upper right) Wearable thermocells such as joint sleeve, bracelet, insole, kneepad and forehead protector on a moving body. (bottom left) Schematic showing microstructured surfaces improving contact with irregular heat source. (bottom right) The output voltage of thermocell under the two conditions of perfect match (1) and mismatch (2) at different temperatures of the irregular heat.

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Nankai University

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