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Highly Twisted Double-Helix Carbon Nanotube Yarns.
MedLine Citation:
PMID:  23289799     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The strength and flexibility of carbon nanotubes (CNTs) allow them to be constructed into a variety of innovated architectures with fascinating properties. Here, we show that CNTs can be made into a highly twisted yarn-derived double-helix structure by a conventional twist-spinning process. The double-helix is a stable and hierarchical configuration consisting of two single-helical yarn segments, with controlled pitch and unique mechanical properties. While one of the yarn components breaks early under tension due to the highly twisted state, the second yarn produces much larger tensile strain and significantly prolongs the process until ultimate fracture. In addition, these elastic and conductive double-helix yarns show simultaneous and reversible resistance change in response to a wide range of input sources (mechanical, photo, and thermal) such as applied strains or stresses, light illumination, and environmental temperature. Our results indicate that it is possible to create higher-level, more complex architectures from CNT yarns and fabricate multifunctional nanomaterials with potential applications in many areas.
Authors:
Yuanyuan Shang; Yibin Li; Xiaodong He; Shanyi Du; Luhui Zhang; Enzheng Shi; Shiting Wu; Zhen Li; Peixu Li; Jinquan Wei; Kunlin Wang; Hongwei Zhu; Dehai Wu; Anyuan Cao
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-4
Journal Detail:
Title:  ACS nano     Volume:  -     ISSN:  1936-086X     ISO Abbreviation:  ACS Nano     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-7     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101313589     Medline TA:  ACS Nano     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Centre for Composite Materials and Structures, Harbin Institute of Technology , Harbin 150080, P. R. China.
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