Formation of copper lines on dielectric substrates by the thermotensography method

It has been shown that the thermotensographic process in the layer of a copper dibromide solution in ethanol followed by catalytic reduction of copper in a hydrogen current at 450°C can be used to obtain conducting lines. It has been established that in an open liquid layer lines of isolated small crystals of copper are formed, and in a layer of a closed volume lines of intergrown small crystals are formed due to the evaporation-convective intensification of the image. In the first case, the lines do not conduct electric current, and in the second one their specific resistance is 4·10³ times higher than in monolithic copper. __________ Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 80, No. 2, pp. 186–192, March–April, 2007.