TY - JOUR
T1 - Inkjet-Deposited Single-Wall Carbon Nanotube Micropatterns on Stretchable PDMS-Ag Substrate-Electrode Structures for Piezoresistive Strain Sensing
AU - Ervasti, Henri
AU - Järvinen, Topias
AU - Pitkänen, Olli
AU - Bozó, Éva
AU - Hiitola-Keinänen, Johanna
AU - Huttunen, Olli Heikki
AU - Hiltunen, Jussi
AU - Kordas, Krisztian
N1 - Funding Information:
We thank Arttu Korhonen (VTT Technical Research Centre of Finland), Tuomo Siponkoski, and Petra Palvölgyi (both with the University of Oulu) for their technical assistance. Financial support was received partly from EU Interreg Nord—Lapin liitto (project Transparent, conducting and flexible films for electrodes), and University of Oulu (projects Entity and PoC: Ultralow permittivity and loss porous nanocomposites for future 6G telecommunication). Printed Intelligence Infrastructure (PII-FIRI, grant no. 320020) is acknowledged. Part of the work was carried out with the support of the Centre for Material Analysis, University of Oulu, Finland.
Publisher Copyright:
© 2021 The Authors. Published by American Chemical Society.
PY - 2021/6/16
Y1 - 2021/6/16
N2 - Printed piezoresistive strain sensors based on stretchable roll-to-roll screen-printed silver electrodes on polydimethylsiloxane substrates and inkjet-deposited single-wall carbon nanotube micropatterns are demonstrated in this work. With the optimization of surface wetting and inkjet printing parameters, well-defined microscopic line patterns of the nanotubes with a sheet resistance of <100 ω/ could be deposited between stretchable Ag electrodes on the plasma-treated substrate. The developed stretchable devices are highly sensitive to tensile strain with a gauge factor of up to 400 and a pressure sensitivity of μ0.09 Pa-1, respond to bending down to a radius of 1.5 mm, and are suitable for mounting on the skin to monitor and resolve various movements of the human body such as cardiac cycle, breathing, and finger flexing. This study indicates that inkjet deposition of nanomaterials can complement well other printing technologies to produce flexible and stretchable devices in a versatile manner.
AB - Printed piezoresistive strain sensors based on stretchable roll-to-roll screen-printed silver electrodes on polydimethylsiloxane substrates and inkjet-deposited single-wall carbon nanotube micropatterns are demonstrated in this work. With the optimization of surface wetting and inkjet printing parameters, well-defined microscopic line patterns of the nanotubes with a sheet resistance of <100 ω/ could be deposited between stretchable Ag electrodes on the plasma-treated substrate. The developed stretchable devices are highly sensitive to tensile strain with a gauge factor of up to 400 and a pressure sensitivity of μ0.09 Pa-1, respond to bending down to a radius of 1.5 mm, and are suitable for mounting on the skin to monitor and resolve various movements of the human body such as cardiac cycle, breathing, and finger flexing. This study indicates that inkjet deposition of nanomaterials can complement well other printing technologies to produce flexible and stretchable devices in a versatile manner.
KW - piezoresistive sensing
KW - pressure, and bending sensors
KW - printed electronics
KW - strain
KW - stretchable materials and devices
UR - http://www.scopus.com/inward/record.url?scp=85108386308&partnerID=8YFLogxK
U2 - 10.1021/acsami.1c04397
DO - 10.1021/acsami.1c04397
M3 - Article
C2 - 34075741
AN - SCOPUS:85108386308
SN - 1944-8244
VL - 13
SP - 27284
EP - 27294
JO - ACS Applied Materials & Interfaces
JF - ACS Applied Materials & Interfaces
IS - 23
ER -