Fig. 5: Evaluations of a wireless pressure sensing system based on a 3MIS, mounted on the skin at the radial and carotid arteries, respectively.

a Photograph of a sensor without (left) and with encapsulation (right). Scale bar, 20 mm. b Schematic cross-sectional illustration of the system. c Circuit and block diagrams. d Photographs of a system mounted on the radial artery. e Continuous superficial pressure and overlaid waveforms of pulsatile blood flow with an indication of diastolic and systolic peaks (inset) from the radial artery. f Photographs of a system mounted on the carotid artery. g Continuous superficial pressure and overlaid waveforms of pulsatile blood flow with an indication of diastolic and systolic peaks (inset) from the carotid artery.