Han, Gi Hyeon Kim, Sun Woo Kim, Jin Kyeom Lee, Seung Hyun Jeong, Myeong Hoon Song, Hyun Cheol Choi, Kyoung Jin Baik, Jeong Min 2024-01-19T12:02:37Z 2024-01-19T12:02:37Z 2022-05-27 2022-05 2079-4991 https://pubs.kist.re.kr/handle/201004/115214 Here, a highly sensitive triboelectric bending sensor in non-contact mode operation, less sensitive to strain, is demonstrated by designing multiple triangular prisms at both sides of the polydimethylsiloxane film. The sensor can detect bending in a strained condition (up to 20%) as well as bending direction with quite high linear sensitivity (similar to 0.12/degree) up to 120 degrees, due to the electrostatic induction effect between Al and poly (glycerol sebacate) methacrylate. Further increase of the bending angle to 135 degrees significantly increases the sensitivity to 0.16/degree, due to the contact electrification between them. The sensors are attached on the top and bottom side of the proximal interphalangeal and wrist, demonstrating a directional bending sensor with an enhanced sensitivity. English MDPI 3D Multiple Triangular Prisms for Highly Sensitive Non-Contact Mode Triboelectric Bending Sensors Article 10.3390/nano12091499 1 Nanomaterials, v.12, no.9 Nanomaterials 12 9 Y scie scopus 000795372600001 Chemistry, Multidisciplinary Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Chemistry Science & Technology - Other Topics Materials Science Physics Article MOTION SENSOR NANOGENERATOR bidirectional bending sensor self-powered sensor triboelectric non-contact mode less sensitive to strain