Electrical conductivity of the nanocomposite layers for use in biomedical systems


Nanocomposite layers consisting of an acrylic paint and single-walled carbon nanotubes (~1.5 wt.%) have been investigated. The investigated samples had a disk shape with a diameter of 20 ‒ 30 mm and a thickness of 2 ‒ 50 μm. After exposure in water for 350 h, the layer mass remained almost invariable (a mass loss of < 1.5%) and the layer samples exhibited high adhesion to glass substrates and a conductivity of ~ 40 S/m. The layers consisting of the nanotubes and acrylic paint exfoliated from the substrates for ~1 h. After heat treatment at a temperature of 140 °C, all the layers exhibited a semiconductor-type temperature dependence of the resistance. The prospects of using these layers in various medical products, e.g. implants for wireless energy transmission, have been discussed.