Fig. 3: Flexible sensors for detecting blood pressures and respiratory waves in real time.
From: Identifying human body states by using a flexible integrated sensor
a Pulse waves from left carotid artery (red) and Index fingertip artery (black). b Differential conversion curves of the ones in a. c Enlarged curves for the region marked by a blue virtual box in b showing the pulse transmit time is 99.4 ms. d Systolic blood pressure (SBP) and diastolic blood pressure (DBP) curve obtained in real time by the pulse transmit time. e–g Breathing waves at normal breathing, short breathing, and deep breathing states by a flexible sensor fixed on the chest.
