The metal-insulator transition observed in krypton-fluoride laser irradiated polyimide is used as a method to study the three dimensional percolation theory of random resistor networks. Values for the percolation threshold and conductivity critical exponent were measured and found to be 0.31 $\pm$ 0.06 for the percolation threshold of a three dimensional ...

Various aspects of the interaction of excimer laser pulses and polyimide were investigated, focusing on low fluences where laser induced electrical conductivity is observed. Multiple shot excimer ablation of polyimide was investigated, and at fluences between 20 mJ/cm$\sp2$ and 260 mJ/cm$\sp2,$ ablation would cease after a few hundred pulses. This ...