  We report on the photoconductance in two-dimensional arrays of gold nanorods
which is strongly enhanced at the frequency of the longitudinal surface plasmon
of the nanorods. The arrays are formed by a combination of droplet deposition
and stamping of gold nanorod solutions on SiO2 substrates. We find that the
plasmon induced photoconductance is sensitive to the linear polarization of the
exciting photons. We interpret the occurrence of the photoconductance as a
bolometric enhancement of the arrays' conductance upon excitation of the
longitudinal surface plasmon resonance of the nanorods.
