Fig. 9: 3D-printed functional devices for advanced biosensing applications.
From: Mechanics and bio-interface engineering in flexible biosensors for continuous health monitoring
a Scheme of the M2A3DNC pressure sensor for multiple physiological signals monitoring154. b Optical image of the wearable MSP2S3. Inset shows LED ‘on’ and ‘off’ states corresponding to the pulse signal peak and valley detected by the device in mode one155. c Example of a fabricated Bioimpedance (Bio-Z) ring sensor custom-fitted to the user’s finger size, ensuring electrode-skin contact157. d Schematic illustration demonstrating respiratory monitoring159. e Attachment of sensing electrodes to the skin near the upper arm and heart. The signals were transmitted via Bluetooth through a laptop interface160.
