TY - JOUR
T1 - Inkjet-printed Ti3C2Tx MXene electrodes for multimodal cutaneous biosensing
AU - Saleh, Abdulelah
AU - Wustoni, Shofarul
AU - Bihar, Eloise
AU - El Demellawi, Jehad K.
AU - Zhang, Yizhou
AU - Hama, Adel
AU - Druet, Victor
AU - Yudhanto, Arief
AU - Lubineau, Gilles
AU - Alshareef, Husam N.
AU - Inal, Sahika
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The authors thank Nimer Wehbe at Imaging and Characterization facilities at KAUST Core Labs for assisting with the XPS etching measurements. Scheme 1 was created by Heno Hwang, a scientific illustrator at King Abdullah University of Science and Technology (KAUST).
PY - 2020/8/28
Y1 - 2020/8/28
N2 - Among the existing 2D materials, MXenes, i.e., transition metal carbides, nitrides and/or carbonitrides, stand out for their excellent electrochemical properties. On account of their high charge storage capacity, metal-like conductivity, biocompatibility as well as hydrophilicity, Ti3C2Tx MXene-based inks hold great potential for scalable production of skin conformable electronics via direct printing methods. Herein, we develop an aqueous MXene ink and inkjet-print MXene films on freestanding, flexible conducting polymer-based substrates. These skin-adherent MXene electrodes detect electrocardiography signals with high signal-to-noise ratio while exhibiting preserved electrical performance after 1000 cycles of bending with a 50 day-long shelf life in ambient conditions. We show that printed MXene films can further be functionalized to perform as multifunctional biosensing units. When integrated with a sodium (Na+) ion-selective membrane, MXene electrodes detect Na+ in artificial sweat with a sensitivity of 40 mV per decade. When the films are functionalized with antibodies, they generate an electrical signal in response to a pro-inflammatory cytokine protein (interferon gamma) with a sensitivity of 3.9 mV per decade. Our findings demonstrate how inkjet-printed MXene films simplify the fabrication of next-generation wearable electronic platforms that comprise multimodal sensors.
AB - Among the existing 2D materials, MXenes, i.e., transition metal carbides, nitrides and/or carbonitrides, stand out for their excellent electrochemical properties. On account of their high charge storage capacity, metal-like conductivity, biocompatibility as well as hydrophilicity, Ti3C2Tx MXene-based inks hold great potential for scalable production of skin conformable electronics via direct printing methods. Herein, we develop an aqueous MXene ink and inkjet-print MXene films on freestanding, flexible conducting polymer-based substrates. These skin-adherent MXene electrodes detect electrocardiography signals with high signal-to-noise ratio while exhibiting preserved electrical performance after 1000 cycles of bending with a 50 day-long shelf life in ambient conditions. We show that printed MXene films can further be functionalized to perform as multifunctional biosensing units. When integrated with a sodium (Na+) ion-selective membrane, MXene electrodes detect Na+ in artificial sweat with a sensitivity of 40 mV per decade. When the films are functionalized with antibodies, they generate an electrical signal in response to a pro-inflammatory cytokine protein (interferon gamma) with a sensitivity of 3.9 mV per decade. Our findings demonstrate how inkjet-printed MXene films simplify the fabrication of next-generation wearable electronic platforms that comprise multimodal sensors.
UR - http://hdl.handle.net/10754/664955
UR - https://iopscience.iop.org/article/10.1088/2515-7639/abb361
U2 - 10.1088/2515-7639/abb361
DO - 10.1088/2515-7639/abb361
M3 - Article
JO - Journal of Physics: Materials
JF - Journal of Physics: Materials
SN - 2515-7639
ER -