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New Secrets of Spider Silk: Exceptionally High Thermal Conductivity and Its Abnormal Change under Stretching
Author(s) -
Huang Xiaopeng,
Liu Guoqing,
Wang Xinwei
Publication year - 2012
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201104668
Subject(s) - thermal conductivity , silk , spider , materials science , polymer science , strain (injury) , spider silk , composite material , nanotechnology , biology , ecology , anatomy
Two new significant discoveries are reported : i) the dragline silk of N. clavipes spider has an exceptionally high thermal conductivity: up to 416 W/m·K that beats most materials; ii) contrary to normal materials, its thermal conductivity increases with strain (19% increase under ∼20% strain). These new findings will revolutionize the design of polymer fibers to increase their thermal conductivity by orders of magnitude.