We have studied the transport properties of thin LaTiO3 films, grown on NdGaO3 and SrTiO3 substrates. In case of films gown on NdGaO3 we see a sharp increase of filrn resistivity when the film thickness drops below 18 run. This appears to Correspond to a surface depletion layer in the films. We could avoid the detrimental effects of surface states by growing LaTiO3 films on SrTiO3 substrates and covering the LaTiO3 layers with a SrTiO3 cap layer. In this case we succeeded in fabricating isolated LaTiO3 layers, sandwiched between SrTiO3, that remained metallic down to 4 K. This work shows that it is feasible to use the LaTiO3/SrTiO3 system for growing metallic nanostructure arrays. (c) 2005 Published by Elsevier B.V.