Dual‐Responsive Yarn‐Based Artificial Muscles for Adaptive Thermal Management

In the face of global extreme weather and a changing climate, the development of adaptive textiles that provide thermoregulation by altering their structure has become increasingly critical. Such textiles require artificial muscles capable of fast, reliable motion to effectively respond to fluctuating environmental conditions. However, moisture-responsive yarn-based muscles, while promising candidates, are hindered by slow and uncontrollable actuation, limiting their practical application. Inspired by the conscious movement of skeletal muscle, we present a hybrid yarn-based artificial muscle (HYAM) that couples moisture actuation with electrothermal recovery. This design achieves a 128% increase in actuation stroke and a 136% increase in speed compared with pristine yarn-based muscles. Electrothermal recovery controllably shortens recovery and full-cycle times by 91% and 83%, respectively. Inspired by spindle-driven gates, HYAM flips dual-mode radiative curtains to switch between warming and cooling, showing promise for intelligent personalized thermal management.