Wearable sensors deriving from cationic-induced 2D-2D co-assembled films for nutrient monitoring

Abstract

Real-time nutrient monitoring plays a crucial role in identifying healthcare abnormalities and necessitates the development of advanced detection systems. However, the current monitoring systems encounter limitations attributed to the rigidity of materials, impeding the detection process. To address this challenge, wearable sensors have emerged as a promising solution. In this study, a novel technique utilizing cation-induced oil-water interface co-assembly is presented for the fabrication of two-dimensional (2D) MXene-2D Reduced Graphene Oxide (RGO) films (MX-RGO). Through this technology, the as-fabricated films are successfully transferred onto various flexible and wearable substrates in a single step, showcasing the versatility of the film on different flexible substrates. By deriving our wearable sensor from the 2D-2D co-assembly film, a critical gap in the field of nutritional monitoring technologies is addressed. The MX-RGO film demonstrates exceptional sensing properties, harnessing the ultra-high conductivity of MXene and the stability of RGO. This technological breakthrough enables the selective and accurate tracking of ascorbic acid (AA), a vital nutrient. The findings not only establish a new approach for the co-assembly of 2D-2D film-based materials as an active layer for wearable electronic devices but also hold promise for the future development of high-performance electronic products through the implementation of film-based sensors in medical care.