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Conducting polymer composites consisting of carbon nanotubes (CNTs) as a conductive filler and polydimethylsiloxane (PDMS) as a polymer matrix were fabricated to investigate their capacitive and piezoresistive effects as pressure sensors. The pressure-sensing behavior and mechanism of the composites were compared in terms of basic configuration with a parallel plate structure. Various sensing experiments, such as sensitivity, repeatability, hysteresis, and temperature dependence according to the working principle, were conducted with varying filler contents. The hysteresis and repeatability of the pressure-sensing properties were investigated using cyclic tensile tests. In addition, a temperature test was performed at selected temperatures to monitor the change in the resistance/capacitance.
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http://dx.doi.org/10.3390/ma15217637 | DOI Listing |
Sensors (Basel)
August 2025
Electronics Engineering and Communications Department, Escuela Universitaria Politécnica de Teruel, Universidad de Zaragoza, 44003 Teruel, Spain.
Sensor arrays are arrangements of sensors that follow a certain pattern, usually in a row-column distribution. This study presents a systematic review on sensor arrays. For this purpose, several systematic searches of recent studies covering a period of 10 years were performed.
View Article and Find Full Text PDFAdv Mater
August 2025
Faculty of Materials Science and Chemistry, China University of Geosciences, 388 Lumo Road, Wuhan, 430074, P. R. China.
Owing to the unique mechano-optical response, mechanoluminescence (ML) materials possess dynamic, sensitive, visual, and recoverable strain sensing capabilities. However, the dilemma of lacking outstanding ML materials with high detection precision under micro deformations still exists, thereby hindering advanced applications in multi-angle and multidimensional scenarios. Herein, a novel Pr-doped perovskite oxide (NaTaO:Pr)-based composite elastic thin film is developed, which achieves ultrasensitive ML responses to both microscale compressive and tensile strains.
View Article and Find Full Text PDFPolymers (Basel)
July 2025
Department of Polymer Materials, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China.
Polyurethane (PU) foam, renowned for its structural versatility, elasticity, compressibility, and adaptability, has garnered significant attention for its use in flexible strain sensors due to its capability to detect mechanical deformation. This review presents a comprehensive analysis of both the studies and recent advancements in PU foam-based strain sensors, particularly those incorporating conductive materials. The review begins by examining the chemical composition and structural characteristics of PU foam, followed by a discussion of various fabrication methods and their effects on sensor performance.
View Article and Find Full Text PDFResearch (Wash D C)
July 2025
Department of Precision Instrument, Tsinghua University, Beijing 100084, PR China.
Reliable detection of high- shocks in extreme impact scenarios, such as automobile collisions, is essential for ensuring occupant safety. Conventional shock sensors based on piezoresistive or capacitive mechanisms often underperform in high- environments due to their structural complexity, resulting in delayed or missed detection. Here, we present a self-powered high- shock sensor that combines a triboelectric transducer with a prestressed structure to deliver large signal amplitude and minimal oscillation.
View Article and Find Full Text PDFACS Appl Mater Interfaces
July 2025
College of Integrated Circuit Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, P. R. China.
In the pursuit of advancing wearable electronics, flexible multifunctional devices that integrate both energy storage and sensing functions offer an effective route to achieve smaller, lighter, and more versatile systems. This study introduces an effective strategy for the laser-induced synthesis of boron-nitrogen codoped hollow carbon nanosphere cages (BNHCNCs). In this approach, boric acid nanoparticles (HBO NPs) are strategically utilized as both the template and the boron doping source, while the polyimide (PI) precursor contributes to the carbon matrix and the nitrogen doping source, and the straightforward hot-water treatment effectively dissolves the HBO template.
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