Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
736932 | Sensors and Actuators A: Physical | 2009 | 4 Pages |
Abstract
Insulating nanocomposite - metal granules in the rubbery polymer matrix of a low bulk compression modulus K - is a medium with the giant piezoresistivity: its conductivity Ï(P) depends rather strongly on the pressure P. It is the consequence of the exponentially strong dependence of the tunnel electron intergrain transition probability on the distance between granules. Optimal systems are those with granules of the diameter â¼10Â nm whose volume fraction equals 0.25-0.3. In that case one could expect the piezoresistive gauge factor G=[ÎÏ(P)/Ï(0)](K/P) would be strongly nonlinear function of the pressure P and Gâ¼105 at Pâ0.8K, in comparison to Gâ¼102 for typical bulk materials.
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Evgeny Z. Meilikhov,