A comparative study of the antibacterial properties of copper-based transparent oxides at the solid–liquid interface

Abstract

This study investigates the antibacterial properties of CuCrO2 (CCO) films fabricated by sputter deposition followed by calcination. The effects of the doped magnesium and of the film fabrication in nitrogen atmosphere on both CCO crystallinity and antibacterial properties are compared. The antibacterial properties are evaluated using the plate counting method, and the crystallinity of the films are analyzed by x-ray diffraction. The results show the proliferation of Escherichia coli colonies can be suppressed within 3 hours, with magnesium-doped CCO showing the best antibacterial properties of all samples. This is explained by the formation of CuO byproduct during fabrication.

Zeta potential variations in bonding states of fluorocarbon films deposited by plasma-enhanced chemical vapor deposition

“…Because both hydrophilic and hydrophobic surfaces of materials have important industrial applications, their interactions with liquids have been studied. [1][2][3][4] Especially, surfaces decorated with carbon-based thin structures, including graphene and carbon nanotube sheet, show unique properties, such as fast water transport in graphene nano channels 5) and transparent hydrophilicity through graphene. 6) Moreover, triboelectrification at the solid-liquid interface still remains to be fully understood.…”