Bioinspired Dual‐Scale Heterointerfaces Engineering Strategy to Microclimate‐Regulating Meta‐Fabrics Toward Multimodal Self‐Adaptive Personal Thermal‐Moisture Management

Abstract Achieving anti‐gravity water transport and high‐rate evaporative cooling in the skin microclimate remains a major challenge in coupled mass‐heat transport. Inspired by multi‐branching networks and transpiration processes of plants, a bioinspired microclimate‐regulating meta‐fabric (BMR‐PLA) is unraveled based on biomimetic mass transfer mechanisms and gradient structural design. The meta‐fabric incorporates dual‐scale heterointerfaces that integrate rapid sweat absorption, autonomous pumping, and efficient thermal dissipation. Its spatially heterogeneous wettability enables exceptional unidirectional water transport (index of 1180%), continuously removing sweat from the skin while maintaining high comfort and environmental adaptability. Furthermore, the heterointerfaces composed of hierarchical pore structures and gradient fiber dimensions form interconnected channels that facilitate coupled mass‐heat transport. The micro‐grooved fibers in the hygroscopic layer and the rough, porous hydrophilic fibers act synergistically, significantly enhancing air permeability (199 mm s ⁻¹ ) and water evaporation rate (0.33 g h ⁻¹ ). By synergistically balancing flow resistance and transport driving forces, the meta‐fabric sustains a high surface temperature when dry and achieves accelerated evaporation upon wetting in practical scenarios. Well‐controlled functionalization of these heterointerfaces also enables health protection and self‐powered monitoring. A strategy is presented for engineering next‐generation adaptive fabrics with multimodal functionality for personalized microclimate management.