fig6

Figure 6. Thermoelectric (TE) cooling materials and devices. (A) Operation mechanism and photograph of TE cooler module. Reproduced with permission^[135]. Copyright 2019, Springer Nature; (B) wearable TE device with high flexibility. Reproduced with permission^[136]. Copyright 2019, American Association for the Advancement of Science; (C) optical and SEM images of flexible crystalline TE fiber (D) wearable TE fabric knitted with TE fibers and thermography of TE fiber cooling test. Reproduced with permission^[137]. Copyright 2017, Elsevier; (E) dual-mode operation of skin-like thermo-haptic device by changing current flow; (F) IR images of device cooling/heating mode mounted on the palm. Reproduced with permission^[138]. Copyright 2020, Wiley-VCH GmbH; (G) conceptual view of zebra-inspired radiative cooling membrane with TE generator; (H) energy flow of energy-harvesting system and photograph of n- and p-type Si NM TE generator array. Reproduced with permission^[139]. Copyright 2023, American Association for the Advancement of Science.