@MASTERSTHESIS{ 2022:178102367,
 	title = {Characterization and evaluation of antibacterial activity of thin and ultrathin Ag and Cu coatings deposited on glass substrates via magnetron sputtering},
 	year = {2022},
 	url = "https://tede2.pucrs.br/tede2/handle/tede/11119",
 	abstract = "With current COVID-19 pandemic, the world population and especially health workers need to use personal protective equipment (PPE), mainly facial protection, such as facial masks and respirators, to prevent contagion by SARS-CoV-2 virus. These items filter particles, however don’t present any kind of antimicrobial mechanism, favoring cross-contamination. Thus, in order to functionalize these EPIs, new antimicrobial agents are being studied, such as metallic nanoparticles, especially silver (AgNPs) and copper (CuNPs), which have an intrinsic antimicrobial effect. The coating of surfaces using metallic particles would make it possible to modify the surface of several materials so that they present antiviral and antibacterial actions. In this work, then, the deposition of AgNPs and CuNPs on glass substrate was performed using the magnetron sputtering method, to evaluate the bactericidal activities of these materials. It sought to optmize the deposition conditions and thickness of the deposited layers in terms of antimicrobial activity of the technique to other materials used in PPE. The samples were characterized using Rutherdford Backscatter Spectrometry (RBS) and Scanning Electron Microscopy (SEM) techniques in order to obtain information about morphology, chemical composition and layer thickness. In addition, biological studies were performed with the gram-positive bacterium Staphylococcus aureus to evaluate the antibacterial actions of Ag and Cu coatings. With this, it was possible to confirm the bactericidal activity against S. aureus. The samples with a shorter deposition time showed an antibacterial effect as satisfactory as the samples with longer deposition times, besides these samples keep the transparency of the samples",
 	publisher = {Pontifícia Universidade Católica do Rio Grande do Sul},
 	scholl = {Programa de Pós-Graduação em Engenharia e Tecnologia de Materiais},
 	note = {Escola Politécnica}
}