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Carbon Nanotube Yarn‐Based Glucose Sensing Artificial Muscle
Author(s) -
Lee Junghan,
Ko Sachan,
Kwon Cheong Hoon,
Lima Márcio D.,
Baughman Ray H.,
Kim Seon Jeong
Publication year - 2016
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201503509
Subject(s) - materials science , carbon nanotube , artificial muscle , swelling , yarn , boronic acid , biopolymer , actuator , nanotube , nanotechnology , biosensor , chemical engineering , polymer , chemistry , composite material , organic chemistry , computer science , artificial intelligence , engineering
Boronic acid (BA), known to be a reversible glucose‐sensing material, is conjugated to a nanogel (NG) derived from hyaluronic acid biopolymer and used as a guest material for a carbon multiwalled nanotube (MWNT) yarn. By exploiting the swelling/deswelling of the NG that originates from the internal anionic charge changes resulting from BA binding to glucose, a NG MWNT yarn artificial muscle is obtained that provides reversible torsional actuation that can be used for glucose sensing. This actuator shows a short response time and high sensitivity (in the 5–100 × 10 −3 m range) for monitoring changes in glucose concentration in physiological buffer, without using any additional auxiliary substances or an electrical power source. It may be possible to apply the glucose‐sensing MWNT yarn muscles as implantable glucose sensors that automatically release drugs when needed or as an artificial pancreas.