Inkjet-printed Ti3C2Tx MXene electrodes for multimodal cutaneous biosensing
El Demellawi, Jehad K.
Alshareef, Husam N.
KAUST DepartmentBioengineering Program
Biological and Environmental Sciences and Engineering (BESE) Division
Composite and Heterogeneous Material Analysis and Simulation Laboratory (COHMAS)
Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
Functional Nanomaterials and Devices Research Group
Material Science and Engineering
Material Science and Engineering Program
Mechanical Engineering Program
Physical Science and Engineering (PSE) Division
Permanent link to this recordhttp://hdl.handle.net/10754/664955
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AbstractAmong 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.
CitationSaleh, A., Wustoni, S., Bihar, E., El-Demellawi, J., Zhang, Y., Hama, A., … Inal, S. (2020). Inkjet-printed Ti3C2Tx MXene electrodes for multimodal cutaneous biosensing. Journal of Physics: Materials. doi:10.1088/2515-7639/abb361
SponsorsThe 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).
JournalJournal of Physics: Materials
CollectionsArticles; Bioengineering Program; Biological and Environmental Science and Engineering (BESE) Division; Bioscience Program; Physical Science and Engineering (PSE) Division; Material Science and Engineering Program; Mechanical Engineering Program; Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division
Except where otherwise noted, this item's license is described as As the Version of Record of this article is going to be/has been published on a gold open access basis under a CC BY 3.0 licence, this Accepted Manuscript is available for reuse under a CC BY 3.0 licence immediately.