There have been several attempts to circumvent these limitations. For example, Hamedi et al. reported paper-based devices incorporating embedded electrodes and microfluidics through the combination of wax channel patterning and drop-casted conductive inks. They showcased a variety of electronic circuits triggered by capillary flow. Nevertheless, these approaches do not allow independent patterning of flow paths and electronic circuit traces. This means that the electrodes are constrained within the channel boundaries and it is not possible to fabricate multiple electrodes separated with electrolytes on a single sheet. This considerably limits potential applications within electrochemical sensing.