Enhancing the Work Capacity of Electrochemical Artificial Muscles by Coiling Plies of Twist-Released Carbon Nanotube Yarns

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dc.contributor.ORCID0000-0001-5845-5137 (Baughman, RH)
dc.contributor.authorKim, K. J.
dc.contributor.authorHyeon, J. S.
dc.contributor.authorKim, H.
dc.contributor.authorMun, T. J.
dc.contributor.authorHaines, Carter S.
dc.contributor.authorLi, Na
dc.contributor.authorBaughman, Ray H.
dc.contributor.authorKim, S. J.
dc.contributor.utdAuthorHaines, Carter S.
dc.contributor.utdAuthorLi, Na
dc.contributor.utdAuthorBaughman, Ray H.
dc.date.accessioned2019-11-08T21:51:43Z
dc.date.available2019-11-08T21:51:43Z
dc.date.created2019-03-29
dc.descriptionDue to copyright restrictions full text access from Treasures at UT Dallas is restricted to current UTD affiliates (use the provided Link to Article).
dc.description.abstractTwisted-yarn-based artificial muscles can potentially be used in diverse applications, such as valves in microfluidic devices, smart textiles, air vehicles, and exoskeletons, because of their high torsional and tensile strokes, high work capacities, and long cycle life. Here, we demonstrate electrochemically powered, hierarchically twisted carbon nanotube yarn artificial muscles that have a contractile work capacity of 3.78 kJ/kg, which is 95 times the work capacity of mammalian skeletal muscles. This record work capacity and a tensile stroke of 15.1% were obtained by maximizing yarn capacitance by optimizing the degree of inserted twist in component yarns that are plied until fully coiled. These electrochemically driven artificial muscles can be operated in reverse as mechanical energy harvesters that need no externally applied bias. In aqueous sodium chloride electrolyte, a peak electrical output power of 0.65 W/kg of energy harvester was generated by 1 Hz sinusoidal elongation. ©2019 American Chemical Society.
dc.description.departmentSchool of Natural Sciences and Mathematics
dc.description.departmentAlan G. MacDiarmid NanoTech Institute
dc.description.sponsorshipAir Force Office of Scientific Research grants FA9550-15-1-0089 and the Robert A. Welch Foundation grant AT-0029
dc.identifier.bibliographicCitationKim, K. J., J. S. Hyeon, H. Kim, T. J. Mun, et al. 2019. "Enhancing the Work Capacity of Electrochemical Artificial Muscles by Coiling Plies of Twist-Released Carbon Nanotube Yarns." ACS Applied Materials and Interfaces 11(14): 13533-13537, doi: 10.1021/acsami.8b21417
dc.identifier.issn1944-8244
dc.identifier.issue14
dc.identifier.urihttps://hdl.handle.net/10735.1/7097
dc.identifier.volume11
dc.language.isoen
dc.publisherAmerican Chemical Society
dc.relation.urihttps://dx.doi.org/10.1021/acsami.8b21417
dc.rights©2019 American Chemical Society
dc.source.journalACS Applied Materials and Interfaces
dc.subjectMuscles--Artificial
dc.subjectCarbon nanotubes
dc.subjectActuators
dc.subjectEnergy harvesting
dc.subjectElectrolytes
dc.subjectExoskeleton (Robotics)
dc.subjectMammals
dc.subjectMuscles
dc.subjectSalt
dc.subjectWool
dc.subjectCarbon nanotube yarns
dc.subjectChloride electrolytes
dc.subjectDevices, Micro-fluidic
dc.titleEnhancing the Work Capacity of Electrochemical Artificial Muscles by Coiling Plies of Twist-Released Carbon Nanotube Yarns
dc.type.genrearticle

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Baughman, Ray H.