
A 레프레 토토사이트 team led by Professor Choi Chang-soon and Professor Kim Seon-jeong from the Department of Biomedical Engineering at Hanyang University has developed a fiber-type artificial muscle that not only generates electricity in response to ambient humidity but also produces mechanical rotation. The announcement was made by Hanyang University on May 13.
Previous fiber-based water energy harvesting technologies have typically relied on a single reaction mechanism, enabling either electricity generation or mechanical actuation, but not both. This limitation has hindered overall energy conversion efficiency, leaving the enormous potential energy of water underutilized.
The key innovation of the Hanyang University 레프레 토토사이트 team lies in the asymmetric structure of carbon nanotube (CNT) yarns, designed with a hydrophobic upper region and a hydrophilic lower region. When exposed to moisture, protons are released from the hydrophilic region, creating a concentration gradient that generates electricity. Simultaneously, water absorption causes the yarn to expand and rotate. 
According to the research team, this fiber-type artificial muscle can produce an open-circuit voltage exceeding 100 mV and achieve over two full rotations. This study represents the world’s first instance of simultaneously harvesting electrical and mechanical energy from water, offering a new solution to the low-efficiency challenges of existing water energy conversion technologies.
Professor Choi stated, “This research has demonstrated that it is possible to simultaneously achieve high efficiency and sustainability in water-based energy harvesting.” He added, “This electricity-generating fiber actuator holds promise for a wide range of future applications including micro energy devices, wearable electronics, and smart textiles—potentially enabling battery-free next-generation electronics.”
The study was supported by the Ministry of Science and ICT and the National 레프레 토토사이트 Foundation of Korea. It was published in the May 2025 issue of Advanced Materials (IF=27.4) under the title “Dual-Scale Hydration-Induced Electrical and Mechanical Torsional Energy Harvesting in Heterophilically Designed CNT Yarns.” Lee Jae-myung (Ph.D. candidate) and Son Won-kyung (Ph.D.) served as co-first authors, while Professors Kim Seon-jeong and Choi Chang-soon were corresponding authors.
Click to see the paper:
https://advanced.onlinelibrary.wiley.com/doi/pdf/10.1002/adma.202501111