Wearable Conformal Fiber Sensor for High Fidelity Physiological Measurements

Wearable devices are becoming increasingly important, addressing needs in both the fitness and medical markets. In this paper, we describe a novel sensing platform based on hollow-core polyurethane optical fiber, operating through capillary guidance, that acts as conformal sensor of pressure or deformation. The novelty is achieved by combining simple structure (hollow capillary) detection technique (intensity-based measurement) with unconventional material properties (extreme deformability high absorbance). Used wrist ankle, allows detailed features cardiac pulse wave to be identified fidelity, while chest it simultaneous measurement breathing rate walking cadence. together, an array such sensors (with others) could incorporated into clothing provide physiologically rich real-time data for health monitoring.