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(Color online) Setup of CAFM measurements. coated Si tip is in contact mode with the sample, where the top shadowed region indicates Ti ion implanted and plasma modified PET surface. A carbon tape was used to connect the sample surface to the conductive substrate holder to form the conduction pathway.
(Color online) Current images of plasma modified and ion implanted polyethylene terephthalate (PET) at selected area of (I) and (II) . These dark dots represent high conductive Ti nanoclusters embedded in PET matrices.
(a)–(c)are the average plots of selected areas , , and , as shown in Fig. 2, respectively. All curves show the typical metal-semiconductor junction conductivity. The turn-on voltage is smaller for positive voltage than for negative voltage.
(Color online) (a) -dependent conductivity of Ti ion implanted and plasma modified PET. This curve is divided into three regions, R1, R2, and R3. R1 is from room temperature to , the glass transition temperature of PET, R2 is from , and R3 is from . (b) The fitting line of the Mott law to measurement.
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