文摘
Composite films of poly(ethylene terephthalate) (PET) embedded with Cu nanowires were prepared by electroplating ion-track PET membranes. PET films were irradiated with 450 MeV 129Xe23+ ions with a direction of 45° from the film normal, and then etched with sodium hydroxide solution to form thin pores of 1 μm diameter. Cu was filled into the pores by electroplating in a copper sulfate solution to form Cu nanowires embedded in a direction tilted from the film normal. The composite membrane showed anisotropic infrared absorption in the in-plane direction, having the transmission axis in the direction normal to the ion incidence.