Title :
Electromechanical modeling of GNP nanocomposites for stress sensors applications
Author :
D´Aloia, Alessandro Giuseppe ; Tamburrano, Alessio ; De Bellis, Giovanni ; Sarto, Maria Sabrina
Author_Institution :
Dept. of Astronaut., Electr. & Energetic Eng., Sapienza Univ. of Rome, Rome, Italy
Abstract :
Graphite nanoplatelets (GNPs) can be included in very low weight percentages in a polymer matrix to create new lightweight nanocomposites with desired electromechanical properties, for application in strain sensors. The development of simulation models for the prediction of the electromechanical characteristics of such composites is very important for design and performance optimization purposes. In this study we propose an electromechanical model for the prediction of the response of a strain sensor made of GNP-filled composite. The developed simulation approach is based on the tunneling-percolation model of the electrical transport in the composite, and on the experimental characterization of the dc conductivity of GNPs and GNP-filled composites at different concentrations, produced in the CNIS Labs of Sapienza University.
Keywords :
electromechanical effects; graphite; nanocomposites; percolation; polymers; sensors; tunnelling; GNP nanocomposites; electrical transport; electromechanical modeling; graphite nanoplatelets; polymer matrix; stress sensors; tunneling-percolation model; Conductivity; Economic indicators; Electromechanical sensors; Nanocomposites; Strain; Stress; Nanocomposites; effective dc conductivity; electromechanical modeling; graphite nanoplatelets; stress sensor;
Conference_Titel :
Nanotechnology (IEEE-NANO), 2011 11th IEEE Conference on
Conference_Location :
Portland, OR
Print_ISBN :
978-1-4577-1514-3
Electronic_ISBN :
1944-9399
DOI :
10.1109/NANO.2011.6144649
