Potential Application of PVDF/CoFe2O4 Nanocomposites As Self-powered Piezoelectric Plantar Pressure Sensors
2023 IEEE International Symposium on Medical Measurements and Applications (MeMeA)(2023)
摘要
This paper discusses the use of flexible nanogenerators as plantar pressure sensors, specifically focusing on the development of a sensor based on PVDF-TrFE/CoFe 2 O 3 nanocomposites with a multilayer-graphene/gold top electrode (MGGE). The study highlights the importance of biomechanical sensors in healthcare, particularly in detecting changes in gait patterns that may arise from non-musculoskeletal irregularities in the body. The paper provides an overview of the different types of foot sensor technologies used for pressure monitoring, with a focus on piezoelectric force sensors. The use of PVDF-TrFE, a type of piezoelectric polymer, is discussed, along with techniques for enhancing its piezoelectric response. The results of the study demonstrate improved piezoelectric capabilities of the proposed nanogenerator, with a final piezoelectric coefficient d 33 of 34 pm/V, which is in excellent agreement with the average value obtained by Piezoresponse Force Microscopy (PFM) d 33 = (33.99 ± 5.12) pm/V. The proposed sensor has the potential to be used in the diagnosis and treatment of motor-related issues in diabetes, podiatry, and rehabilitation.
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关键词
PVDF-TrFE nanocomposites,CoFe2O4,magnetic poling,piezoelectric effect,piezoresponse force microscopy (PFM),Plantar Pressure Sensors
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