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Wearable electronics that measure the electrical activity of the human body in a continuous, non-invasive fashion are receiving a great deal of attention for healthcare and fitness monitoring applications. Establishing a reliable electrical contact with skin is a challenging problem: Current electrodes show a limited lifetime and are uncomfortable to wear. We develop electronically conducting ionic liquid gels that enable long-term cutaneous recordings. These biocompatible gels are designed to adhere to skin and make low impedance contacts that are comfortable to wear. |
