10.25394/PGS.8048972.v1 Mo Lv Mo Lv Triboelectricity and Piezoelectricity Based 3D Printed Bio-skin Sensor for Capturing Subtle Human Movements Purdue University Graduate School 2019 Piezoelectric Nanogenerator triboelectric generator 3D Printing heart pulse speech recognition performance Nanotechnology not elsewhere classified 2019-05-14 15:01:17 Thesis https://hammer.purdue.edu/articles/thesis/Triboelectricity_and_Piezoelectricity_Based_3D_Printed_Bio-skin_Sensor_for_Capturing_Subtle_Human_Movements/8048972 This thesis present the fabrication of 2 types of soft wearable electrical devices, utilizing the 3D printing technique. The devices are capable to detect human heart pulse waves and sound waves for health evaluation and speech recognition.