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Robotic faces and hands with human-like thermal infrared emission and physiological temperature are achieved by replicating the circulatory system’s inherent temperature regulation mechanism. The keystone of our development is an intricate system of fibers, reminiscent of blood vessels, embedded within the artificial skin. The fiber network enables controlled heat dissipation by regulating water circulation to mimic human thermal signatures.

The polyurethane–antimony tin oxide (PU–ATO) composite fibers makes infrared (IR) radiations emitted by an object to be as similar as possible to ambient background radiation such that an IR detection sensor fails to distinguish the target object. Hydrophobic surface of the PU–ATO composite fiber prevent the distortion of the IR and thermal radiation caused by the wetting of the PU–ATO composite fiber with water. The PU–ATO composite fiber-based textile can be applied in wearable IR- and thermal radiation-shielding technologies to shield IR signals generated by objects of diverse and complex shapes.

This study aimed to develop a simple and rapid method for the fabrication of transparent polydimethylsiloxane fibers based on thermally induced wet spinning, which is a modification of the conventional wet spinning. This novel method for fiber fabrication does not involve the use of a mold, and fibers with longer lengths can be produced. The use of eco-friendly oil with a high boiling point resolved the issues typically associated with solvent vapor generated during fiber fabricating using conventional wet spinning. The thickness of the fiber was controlled by adjusting the pulling speed of the cured PDMS fiber during rapid stretching.

In textile electronics, micro to millimeter-scaled misalignment is commonly occurred during the high-throughput and bulk-scaled textile manufacturing process, thus the exact performance control of the fiber-based active devices is very difficult in low-cost wearable electronics. In this research, we developed novel single-strand organic electrochemical transistors and proposed dimension-independent characterization method (i.e., the current variation ratio in variation of logarithmic concentration of electrolyte) for ion concentration sensing. Furthermore, we demonstrated the pseudo two-terminal transistor operation by incorporating electrochemical gate electrode onto the surface of the source electrode, leading to single-strand fiber device platform.