Two-dimensional island gold films (2D-I(Au)Fs) were prepared by a thermal evaporation technique where Corning 7059 glass slides, held at an ambient temperature during deposition, were used as substrates. After exposing the films to air at a room temperature of 300 K, the dc resistance of the films was monitored until the films attained short-term stability, namely, invariance of the resistance over time. The island gold films were identified by the value of their stable surface resistivity (ρ s ); these values are 23, 275, 4.4 × 10 3 , 23.2 × 10 3 and 37.5 × 10 3 M / . The variation of the stabilized surface resistivity with temperature over the range of 100-300 K was studied and the temperature coefficient of the surface resistivity (TCR) was deduced. The films have a negative TCR and for any particular temperature the magnitude of the TCR increases with ρ s . For films with a certain ρ s , the magnitude of the TCR increases with a decrease in temperature. The comparison between the magnitudes of the TCRs of the studied films in the present work and those reported by other investigators revealed that our films possess much higher values, and therefore this advantage renders them suitable for being used as temperature sensors. Our results were interpreted, qualitatively, by assuming that the electron transfer between islands takes place by the activated tunnelling mechanism.

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