Development, fabrication, and modeling of highly sensitive conjugated polymer based piezoresistive sensors in electronic skin applications

Nazanin Khalili; Hani E. Naguib; Roy H. Kwon

doi:10.1117/12.2222086

18 April 2016 Development, fabrication, and modeling of highly sensitive conjugated polymer based piezoresistive sensors in electronic skin applications

Nazanin Khalili, Hani E. Naguib, Roy H. Kwon

Author Affiliations +

Proceedings Volume 9800, Behavior and Mechanics of Multifunctional Materials and Composites 2016; 98000R (2016) https://doi.org/10.1117/12.2222086
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2016, Las Vegas, Nevada, United States

Abstract

Human intervention can be replaced through development of tools resulted from utilizing sensing devices possessing a wide range of applications including humanoid robots or remote and minimally invasive surgeries. Similar to the five human senses, sensors interface with their surroundings to stimulate a suitable response or action. The sense of touch which arises in human skin is among the most challenging senses to emulate due to its ultra high sensitivity. This has brought forth novel challenging issues to consider in the field of biomimetic robotics. In this work, using a multiphase reaction, a polypyrrole (PPy) based hydrogel is developed as a resistive type pressure sensor with an intrinsically elastic microstructure stemming from three dimensional hollow spheres. Furthermore, a semi-analytical constriction resistance model accounting for the real contact area between the PPy hydrogel sensors and the electrode along with the dependency of the contact resistance change on the applied load is developed. The model is then solved using a Monte Carlo technique and the sensitivity of the sensor is obtained. The experimental results showed the good tracking ability of the proposed model.

Citation Download Citation

Nazanin Khalili, Hani E. Naguib, and Roy H. Kwon "Development, fabrication, and modeling of highly sensitive conjugated polymer based piezoresistive sensors in electronic skin applications", Proc. SPIE 9800, Behavior and Mechanics of Multifunctional Materials and Composites 2016, 98000R (18 April 2016); https://doi.org/10.1117/12.2222086

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