Inkjet printed wireless biosensors on stretchable substrate

摘要: Wireless biosensors are suited for long-term monitoring of physiological signals. Inkjet printing wireless on stretchable substrate can be used to realize small and lightweight body devices. Current conductive inks have low processing temperature which makes it possible use materials with resistance. Conductive offer sufficient performance realizing antennas interconnections between components. In this work, we thermoplastic polyurethane as the substrate. The inkjet printed conductors tolerate only moderate stretching. Despite weak stretchability, is a favorable option in since even modest stretching enables biosensor conform human body. dielectric properties were characterized using coplanar waveguides (CPW). determined permittivity 3.2 loss tangent 0.1. Due high CPW lines much lossier at frequencies than PEN sensor studied measurements antenna investigated simulations. measured reading range realized 300 µm distance from was 14 m. According simulations changing lossy would not affect sensors' antenna.