Additive Manufacturing in Sensing Technologies: Experimental Design, Fabrication, and Evaluation of Smart Flexible Sensors for Dynamic and Pressure Applications

Sensors have revolutionized modern technology, with flexible sensors offering lightweight, adaptable integration across varied applications. However, challenges include limited response time and a restricted pressure range. This research utilized 3D printing to tackle these limitations. By using Poly-DiMethyl Siloxane (PDMS) porous structures, the sensor's response time improved, particularly for vibration monitoring. A specialized sensor, coated with graphene elastomer ink, showed adaptability to different strain rates, making it suitable for wearables and medical alerts. Another sensor using Carbon Black particles was ideal for constant pressure monitoring. Addressing pressure range issues, the study integrated flexible sensors into 3D printed shoe soles, aiding diabetic patient monitoring. This research enhances flexible sensor applications in various sectors.