Gas-sensitive layers based on fractal-percolation structures

A model of sensitive layers with built-in percolation-cluster structure near the percolation threshold is developed. It is shown that, in the case of the interaction of such gas-sensitive layers with reducing gases, the value of the gas sensitivity can exceed the typical values by several orders of magnitude. The specific features of variation in the impedance response of the percolation structures in the vicinity of the percolation threshold in air and in the case of the influence of a reducing gas are considered.