261 citations · 705 across the 11 of their papers we have counts for
7 papers · 1 filter
Theory of percolation and tunneling regimes in nanogranular metal films
C. Grimaldi
Nanogranular metal composites, consisting of immiscible metallic and insulating phases deposited on a substrate, are characterized by two distinct electronic transport regimes depe…
Tunneling and percolation transport regimes in segregated composites
B. Nigro, C. Grimaldi, P. Ryser
We consider the problem of electron transport in segregated conductor-insulator composites in which the conducting particles are connected to all others via tunneling conductances,…
Tunneling conductivity in composites of attractive colloids
B. Nigro, C. Grimaldi, M. A. Miller +2
In conductor-insulator nanocomposites in which conducting fillers are dispersed in an insulating matrix the electrical connectedness is established by interparticle tunneling or ho…
Transport properties of nonhomogeneous segregated composites
B. Nigro, G. Ambrosetti, C. Grimaldi +2
In conductor-insulator composites in which the conducting particles are dispersed in an insulating continuous matrix the electrical connectedness is established by interparticle qu…
Tunneling-percolation origin of nonuniversality: theory and experiments
S. Vionnet-Menot, C. Grimaldi, T. Maeder +2
A vast class of disordered conducting-insulating compounds close to the percolation threshold is characterized by nonuniversal values of transport critical exponent t, in disagreem…
Critical behavior of the piezoresistive response in RuO2-glass composites
C. Grimaldi, T. Maeder, P. Ryser +1
We re-analyse earlier measurements of resistance R and piezoresistance K in RuO2-based thick-film resistors. The percolating nature of transport in these systems is well accounted…
Gauge factor of thick film resistors: outcomes of the variable range hopping model
C. Grimaldi, P. Ryser, S. Straessler
Despite a large amount of data and numerous theoretical proposals, the microscopic mechanism of transport in thick film resistors remains unclear. However, recent low temperature m…