Fig. 6: Utilization of Janus hydrogel spring as a stretchable and compliant thermal energy harvester. | Nature Communications

Fig. 6: Utilization of Janus hydrogel spring as a stretchable and compliant thermal energy harvester.

From: Macromolecule conformational shaping for extreme mechanical programming of polymorphic hydrogel fibers

Fig. 6: Utilization of Janus hydrogel spring as a stretchable and compliant thermal energy harvester.

a Photographs and infrared images of the Janus spring at different strains and a temperature difference of 40 °C between the hot substrate and ambient air. b Voc of the Janus spring varies the temperature difference over with time. c Voc at different strains and temperature difference. d TE performance at 700% strain of different temperature difference. e Photograph of a Janus hydrogel spring composed of >100 TE coils electrically connected in series. f Photograph of a wearable TE bracelet (top) and infrared image of a coilable TE (bottom). g Voc and Isc of the TE bracelet and coil.

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