Multiplexed and implantable fiber sensor for real-time blood monitoring.
In brief
A research team developed MIFS, a multiplexed implantable fiber sensor that monitors Na+ and K+ ions in real time in the bloodstream. MIFS integrates three parallel liquid metal channels with a multilayer surface-electrode architecture to improve sensitivity, reduce sensing drift, maintain mechanical flexibility, and provide the biocompatibility required for vascular implantation. In vivo tests in rabbit models and validation with human blood samples showed real-time, stable sensing consistent with conventional ex vivo measurements. The paper's DOI is 10.1126/sciadv.aei9767.
Why it matters
MIFS matched conventional ex vivo measurements in rabbit models and human blood samples, supporting real-time intravascular Na+ and K+ monitoring.
