Graphene Nanotubes Empower Skin Electrodes for Diagnostics and Therapy

Graphene nanotubes, also known as single-wall carbon nanotubes, are considered a replacement for traditional conductive agents, such as carbon black and various metal fillers, that often compromise the adhesive and elastic properties of silicone. 

Silicone electrodes with graphene nanotubes ensure optimal functionality by maintaining close contact with the skin, for days at a time. They prevent irritation and allergic reactions and remain securely adhered, even in conditions involving sweat and movement. Their high required loading can affect processing, purity, and cost while posing risks like potential skin contamination.

These electrodes comply with the RoHS regulation, eliminating the skin irritation and poor adhesion associated with traditional additives. Their superior comfort, improved impedance, and minimal signal interference make them ideal for both healthcare applications and consumer wearables, where non-marking and skin-soft properties are crucial.

In contrast to traditional agents, graphene nanotubes with their unique morphology enable electrical resistivity below 10 ohms at an ultralow dosage of less than 1 wt.%. This allows the silicone to retain its original softness and flexibility. 

The nanotubes form a dispersed, uniform 3D conductive network within the material, preventing surface migration and ensuring reliable performance throughout the electrode’s service life.