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(Color online) Room temperature conductivity of irradiated polymers at vs the universal variable , where is the irradiation temperature in °C and is the ion energy in eV. The opened and closed squares represent data for PMMA and PI, respectively. The opened and closed circles represent data for AZ5214e and novolak, respectively. (I)–(III) show regions of variable range hopping. (IV) marks the region of semimetallic conductivity.
Temperature dependence of conductivity of polyimide irradiated with at and different temperatures : (1) , (2) , (3) , (4) , and (5) .
(Color online) Scanning tunneling microscopy images of polyimide films after ion irradiation. Parameters of irradiation: energy of , dose of , irradiation temperature . [(a) and (b)] Original images on different scales. The inset in the image (b) presents its Fourier transform.
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