Vionnet Menot, SoniaGrimaldi, ClaudioRyser, PeterMaeder, ThomasSträssler, Sigfrid2006-06-272006-06-272006-06-27200410.1063/1.1835996https://infoscience.epfl.ch/handle/20.500.14299/232397WOS:0002256201000416387We show that in RuO2–glass composites the nonuniversal resistivity exponent can be modulated by an applied mechanical strain, signaled by a logarithmic divergence of the piezoresistive response at the percolation threshold. We interpret this phenomenon as being due to a tunneling-distance dependence of the transport exponent, supporting therefore a theory of transport nonuniversality proposed some years ago. © 2004 American Institute of Physics. [DOI: 10.1063/1.1835996]Technologie des Couches Epaissestechnologie hybride couches épaisses résistances anisotropie conduction piézorésistance mécanisme percolation critique transport effet tunneltext::journal::journal article::research article