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  • Flexible Sensors for Energy-Harvesting Applications

This book investigates the fabrication of different types of flexible sensors and their subsequent implementation for energy-harvesting applications. A range of techniques, including 3D printing, soft lithography, laser ablation, micro-contract printing, screen-printing, inkjet printing and others, have been used to form flexible sensors with varied characteristics. These sensors have been used for biomedical, environmental and healthcare applications on the basis of their performances. The quality of these flexible sensors has depended on certain types of nanomaterials that have been used to synthesize the conductive parts of the prototypes. These nanomaterials have been based on different sizes and shapes, whose quality varied on the basis of certain factors like crystallinity, shapes and sizes. One of the primary utilization of these nanotechnology-based flexible sensors has been the harvesting of energy, where nano-generators and nano-harvesters have been formed to generate and store energy, respectively, on small and moderate magnitudes. Mechanical and thermal energies have been harvested on the basis of the piezoelectric, pyroelectric and triboelectric effects created by the formed prototypes. The work highlights the amalgamation of these sectors to spotlight the essence of these types of sensors and their intended application.

  • Printed and Flexible Sensor Technology

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This book reviews and showcases the design, fabrication and implementation of printed and flexible sensors and their range of applications. Since the use of flexible sensors has been demonstrated in almost every sector, researchers are working towards the optimization of present technologies and the implementation of new approaches, especially in light of developments emerging in printed and flexible electronics research. Some of the common issues faced and discussed include sensor stability in dynamic environments, non-availability of point-of-care devices, multifunctional sensing prototypes, the requirement of high input power, a saturation of sensitivity, difficulty in replacement of sensors operating in harsh real-time environments and the need for biocompatible sensors for health monitoring.

  • Printed Flexible Sensors: Fabrication, Characterization and Implementation

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This book presents recent advances in the design, fabrication and implementation of flexible printed sensors. It explores a range of materials for developing the electrode and substrate parts of the sensors, on the basis of their electrical and mechanical characteristics. The sensors were processed using laser cutting and 3D printing techniques, and the sensors developed were employed in a number of healthcare, environmental and industrial applications, including: monitoring of physiological movements, respiration, salinity and nitrate measurement, and tactile sensing. The type of sensor selected for each application depended on its dimensions, robustness and sensitivity. The sensors fabricated were also embedded in an IoT-based system, allowing them to be integrated into real-time applications.

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