3D Printed Electrochemical Biometric Bracelet for Smartwatches
Eleni Koukouviti, Anastasios Economou, Christos Kokkinos
Abstract
High Resolution Image Download MS PowerPoint Slide Smartwatches are the most popular wearable devices, providing wearers with the ability to self-monitor their physical parameters. Here, we broaden the health monitoring features of smartwatches from hemodynamic to biochemical e-tracking, through their integration with a 3D printed electrochemical multi-sensory bracelet, which enables noninvasive monitoring of multiple sweat bioindicators. The bio-bracelet is entirely fabricated via 3D printing and consists of an array of six carbon black plastic electrodes embedded in the inner side of a flexible plastic strip that is attached to a smartwatch. The bio-bracelet connects to a mini potentiostat that is directly linked to a smartphone, allowing the capture of bioindicator responses via a mobile app. As a proof-of-concept the bio-bracelet is applied for the enzymatic-based chronoamperometric sequential detection of glucose, alcohol, lactate, and simultaneous voltammetric monitoring of uric acid and caffeine in sweat.