# Free-standing single-helical woolen yarn artificial muscles with robust and trainable humidity-sensing actuation by eco-friendly treatment strategies

> Research article (Smart Materials and Structures, 2022) · cited 16× · AI/ML

**Wikidata**: [openalex:W4284975375](https://www.wikidata.org/wiki/openalex:W4284975375)  
**Source**: https://4ort.xyz/entity/free-standing-single-helical-woolen-yarn-artificial-muscles-with-robust-and-trainable-humidity-sensing-actuation-by-eco-