TY - JOUR
T1 - Printed Stretchable Graphene Conductors for Wearable Technology
AU - Van Hazendonk, Laura S.
AU - Pinto, Artur M.
AU - Arapov, Kirill
AU - Pillai, Nikhil
AU - Beurskens, Michiel R.C.
AU - Teunissen, Jean Pierre
AU - Sneck, Asko
AU - Smolander, Maria
AU - Rentrop, Corne H.A.
AU - Bouten, Piet C.P.
AU - Friedrich, Heiner
N1 - Funding Information:
The authors acknowledge funding from the European Union’s Horizon 2020 research and innovation programme under Grant Agreement 881603 (Graphene Flagship Core3), 785219 (Graphene Flagship Core2) and 696656 (Graphene Flagship Core1).
Publisher Copyright:
© 2022 American Chemical Society. All rights reserved.
PY - 2022/9/13
Y1 - 2022/9/13
N2 - Skin-compatible printed stretchable conductors that combine a low gauge factor with a high durability over many strain cycles are still a great challenge. Here, a graphene nanoplatelet-based colloidal ink utilizing a skin-compatible thermoplastic polyurethane (TPU) binder with adjustable rheology is developed. Stretchable conductors that remain conductive even under 100% strain and demonstrate high fatigue resistance to cyclic strains of 20-50% are realized via printing on TPU. The sheet resistances of these conductors after drying at 120 °C are as low as 341 mil-1. Furthermore, photonic annealing at several energy levels is used to decrease the sheet resistance to <10 1 mil-1, with stretchability and fatigue resistance being preserved and tunable. The high conductivity, stretchability, and cyclic stability of printed tracks having excellent feature definition in combination with scalable ink production and adjustable rheology bring the high-volume manufacturing of stretchable wearables into scope.
AB - Skin-compatible printed stretchable conductors that combine a low gauge factor with a high durability over many strain cycles are still a great challenge. Here, a graphene nanoplatelet-based colloidal ink utilizing a skin-compatible thermoplastic polyurethane (TPU) binder with adjustable rheology is developed. Stretchable conductors that remain conductive even under 100% strain and demonstrate high fatigue resistance to cyclic strains of 20-50% are realized via printing on TPU. The sheet resistances of these conductors after drying at 120 °C are as low as 341 mil-1. Furthermore, photonic annealing at several energy levels is used to decrease the sheet resistance to <10 1 mil-1, with stretchability and fatigue resistance being preserved and tunable. The high conductivity, stretchability, and cyclic stability of printed tracks having excellent feature definition in combination with scalable ink production and adjustable rheology bring the high-volume manufacturing of stretchable wearables into scope.
UR - http://www.scopus.com/inward/record.url?scp=85137282776&partnerID=8YFLogxK
U2 - 10.1021/acs.chemmater.2c02007
DO - 10.1021/acs.chemmater.2c02007
M3 - Article
C2 - 36117880
AN - SCOPUS:85137282776
VL - 34
SP - 8031
EP - 8042
JO - Chemistry of Materials
JF - Chemistry of Materials
SN - 0897-4756
IS - 17
ER -