Structural health monitoring (SHM) is crucial for ensuring operational safety in applications like pipelines, tanks, aircraft, ships, and vehicles. Traditional embedded sensors have limitations due to expense potential structural damage. A novel technology using radio frequency identification devices (RFID) offers wireless transmission of highly sensitive strain measurement data. The system features a thin, flexible sensor based on an inductance-capacitance (LC) circuit with parallel-plate...

Abstract Sensing the motion of objects and humans is essential for various applications, including human‐machine interfaces. Over past few years, sensing has been extensively studied using capacitive strain sensors that can be utilized wireless communications. The performance functionality have improved by achieving high sensitivity, large‐area sensing, ultra‐stretchability, simplicity in design, measurement methods, integration. This review article highlights recent developments sensors,...

Abstract Wireless, passive, and flexible strain sensors can transform structural health monitoring across various applications by eliminating the need for wired connections active power sources. Such offer dual benefits of operational simplicity high‐function adaptability. Herein, a novel wireless sensor is fabricated using radio frequency (RF) technology measurement mechanical strains. Previously introduced concept coupling piezoresistive electrodes utilized with capacitive to ensure...

Highly sensitive capacitive strain sensors based on colloidal gold nanoparticles are designed, produced and characterized in order to address wireless applications.

Accurate wireless strain monitoring is critical for many engineering applications. Capacitive sensors are well suited remote sensing but currently have a limited sensitivity. This study presents new approach improving the sensitivity of electrical capacitance change-based sensors. Our technology based on dielectric elastomer layer laminated between two fragmented electrodes (i.e., carbon nanotube papers) that, by design, experiences significant change in resistance (from Ω to MΩ) when...

Abstract Strain mapping over a large area usually requires an array of sensors, necessitating extensive and complex wiring. Our solution is based on creating multiple sensing regions within the single capacitive sensor body by considering as analogical transmission line, reducing connections to only two wires simplifying electronic interface. We demonstrate technology using piezoresistive electrodes in parallel plate capacitor that create varying proportions electromagnetic wave dissipation...

In this work, we are interested in the design of polymer MEMS for future integration electroactive materials mechanical energy harvesting from environmental vibrations. Organic micro-beams designed by both analytical modeling and finite element analysis to exhibit a low resonant frequency high global strain on top surface under vibration. An original method fabrication combining photolithography screen-printing is used these micro-structures. The patterned based SU8 epoxy photoresist, while...

Abstract Large healthcare markets have been created in highly developed economies to improve the quality of life. Wearable sensors are attracting considerable interest because their 24 h real‐time monitoring capability, which make them useful detection potential diseases. To guide diagnosis, these designed monitor various physical (e.g., pressure, temperature, strain, touch, bioelectricity, etc...) or chemical glucose, oxygen, bacteria, viruses, proteins, quantities. In order be comfortable...

Engineering structures experience changes in material and functional properties due to structural damage, induced by sudden events or gradual degradation over time. Structural Health Monitoring (SHM) is crucial, utilizing real-time monitoring systems with various sensors. Suitable sensors for are vital future economies. They should feature sensitivity, cost-effectiveness, easy integration, reduced complexity. Current strain sensors, like gauges Fiber-optic Brag Gratings (FBG), sensitive but...

Our research aims to develop a new generation of ultrasensitive strain sensors with wireless communication data and energy, low power consumption, easy installation within structures be used as in-situ measurement systems. The sensor has been developed based on RFID sensing technology that allows transmission by inductive coupling between the internal inductance external readout coil. Microfabrication is fabricate patterning metallic LC circuit flexible substrate. Nano cracks are introduced...

Electrostriction is based on the variation of permittivity a dielectric material when subjected to mechanical strain. Until now, use electrostrictive materials limited actuation Micro Electro Mechanical Systems (MEMS) operating mostly in static mode. Here, we present electrostriction as integrated transduction scheme organic microcantilevers both and dynamic modes. Also, an innovative low-cost environment friendly process using xurography developed for simple fabrication MEMS all-organic...

Electrostrictive materials are promising for mechanical energy harvesting applications because of their high power density, low cost and scalability. In this paper, strain sensitive nanocomposite based on reduced graphene (rGO) PDMS used harvesting; they characterized by a electrostrictive coefficient (2.4x10-15 m2/V2) giant dielectric constant (ranging from 100 to 1000 at Hz, depending rGO concentration). Using these materials, MEMS microgenerators fabricated with an innovative low-cost...