TY - JOUR
T1 - 3D printable composite dough for stretchable, ultrasensitive and body-patchable strain sensors
AU - Kim, Ju Young
AU - Ji, Seulgi
AU - Jung, Sungmook
AU - Ryu, Beyong Hwan
AU - Kim, Hyun Suk
AU - Lee, Sun Sook
AU - Choi, Youngmin
AU - Jeong, Sunho
N1 - Publisher Copyright:
© The Royal Society of Chemistry 2017.
PY - 2017/8/21
Y1 - 2017/8/21
N2 - The recent development of strain sensor devices which can actively monitor human body motion has attracted tremendous attention, for application in various wearable electronics and human-machine interfaces. In this study, as materials for strain sensor devices, we exploit the low-cost, carbon-based, 3-dimensional (3D) printable composite dough. The dough is prepared via a chemical method based on the formation of electrostatic assemblies between 1-dimensional, amine-functionalized, multi-walled carbon nanotubes and 2-dimensional graphene oxides. The resulting composite dough has an extremely high storage modulus, which allows a vertically-stackable, 3D printing process for fabricating strain sensor devices on various dense, porous and structured substrates. The device performance parameters, including gauge factor, hysteresis, linearity, and overshooting behavior are found to be adjustable by controlling the printing process parameters. The fabricated strain sensor devices demonstrate the ability to distinguish actual human body motions. A high gauge factor of over 70 as well as other excellent device performance parameters are achievable for the printed sensor devices, and even small strains, below 1%, are also detectable by the fabricated sensor devices.
AB - The recent development of strain sensor devices which can actively monitor human body motion has attracted tremendous attention, for application in various wearable electronics and human-machine interfaces. In this study, as materials for strain sensor devices, we exploit the low-cost, carbon-based, 3-dimensional (3D) printable composite dough. The dough is prepared via a chemical method based on the formation of electrostatic assemblies between 1-dimensional, amine-functionalized, multi-walled carbon nanotubes and 2-dimensional graphene oxides. The resulting composite dough has an extremely high storage modulus, which allows a vertically-stackable, 3D printing process for fabricating strain sensor devices on various dense, porous and structured substrates. The device performance parameters, including gauge factor, hysteresis, linearity, and overshooting behavior are found to be adjustable by controlling the printing process parameters. The fabricated strain sensor devices demonstrate the ability to distinguish actual human body motions. A high gauge factor of over 70 as well as other excellent device performance parameters are achievable for the printed sensor devices, and even small strains, below 1%, are also detectable by the fabricated sensor devices.
UR - http://www.scopus.com/inward/record.url?scp=85027399859&partnerID=8YFLogxK
U2 - 10.1039/c7nr01865g
DO - 10.1039/c7nr01865g
M3 - Article
C2 - 28580999
AN - SCOPUS:85027399859
SN - 2040-3364
VL - 9
SP - 11035
EP - 11046
JO - Nanoscale
JF - Nanoscale
IS - 31
ER -