“…Nanomaterials have been adopted in the fabrication of various sensors due to their unique properties, including zero-dimensional (0D) nanomaterials (e.g., quantum dots, metal nanoparticles), one-dimensional (1D) nanomaterials (e.g., nanotubes, nanowires), two-dimensional (2D) nanomaterials (e.g., graphene, MXenes), , and various nanocomposites (e.g., nanostructured polymers). − Despite the fact that nanomaterials have made considerable achievements in sensor research, the use of a single nanomaterial can lead to conflicting properties such as sensitivity and linearity. In order to solve this problem and strive for high sensitivity, flexibility, linearity, and stability of the sensors, various methods using mixed-dimensional nanocomposites have been put forward. , In addition, using mixed-dimensional nanocomposites has the advantage of adjustable surface morphological features and has enhanced absorption performance significantly . For mixed-dimensional nanocomposites, the properties, namely, the thermal conductivity, photoconductivity, electron transport, and optical absorption, are expected to be different compared to their single nanostructure counterparts; however, simultaneously integrating the intriguing functions of these counterparts into one material is still a critical unresolved challenge in this field.…”