Sofia Afonso Alves

Functional behavior of PEO coatings on porous β-Ti substrates for bone repair and dental implant applications

Julio E. de la Rosa, Celia Garcia-Hernandez, Sofia Afonso Alves, Francisco J. García-García et autres

Metallic biomaterials for bone repair and dental implant must combine adequate mechanical properties with long-term corrosion stability in physiological environments. Among them, β-type titanium alloys, such as Ti35Nb7Zr5Ta, have attracted increasing attention due to their low elastic modulus, absence of potentially cytotoxic …

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Antibacterial and antiviral activities of SiO2-Ag and ZrO2-Ag nanocomposite coatings deposited on polymeric air filters

Domiziana Porporato, Angelica Luceri, Elisa Feyles, David Lembo et autres

Acute respiratory infections are the most common cause of acute illness globally and have a severe impact on human health and productivity. There is robust evidence of airborne transmission of many respiratory viruses via direct or indirect contact with droplets and aerosol …

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Silver Nitrate and Bioactive Glass Containing Chitosan Coatings: Comparison of Antimicrobial and Antiviral Properties

Zoya Hadzhieva, Elisa Feyles, Muhammad Asim Akhtar, Manuela Donalisio et autres

High Resolution Image Download MS PowerPoint Slide Pathogenic air and water contaminations present major health issues nowadays. Filter-based protective devices have been commonly utilized to capture airborne or waterborne microorganisms and viruses in order to reduce or inhibit the transmission of infectious …

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Combined Effect of pH and Neutralizing Solution Molarity on the Rheological Properties of Chitosan Hydrogels for Biomedical Applications

Sofia Afonso Alves, Matheus Araújo Santos, João Emídio da Silva Neto, Henrique Nunes da Silva et autres

Hydrogels are promising materials for biomedical applications due to their tunable properties. Despite significant research on optimizing the mechanical and rheological properties of chitosan hydrogels, a comprehensive analysis incorporating pH and molarity of the neutralizing solution is still lacking. This study addresses …

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Advances in Anti-wear Plasma Electrolytic Oxidation Coatings for Lightweight Materials: Al and Mg Alloys

Patricia Fernández-López, Sofia Afonso Alves, Ainara López Ortega, E. G-Berasategui

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Exploring Low-Power IoT Solutions for Monitoring Natural Gas Systems Using CH4 MOS Detection

Sofia Afonso Alves, Sofia Paiva, Paulo Jorge Parreira dos Santos, Jorge Cabral

In light of the increased concern about environmen-tal sustainability and the urgent need to reduce greenhouse gas emissions, methane (CH4) detection plays a critical role regarding air quality and climate change. As the major component of natural gas, methane significantly contributes to …

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Data-Driven Optimization of Plasma Electrolytic Oxidation (PEO) Coatings with Explainable Artificial Intelligence Insights

Patricia Fernández-López, Sofia Afonso Alves, Aleksey B. Rogov, Aleksey L. Yerokhin et autres

PEO constitutes a promising surface technology for the development of protective and functional ceramic coatings on lightweight alloys. Despite its interesting advantages, including enhanced wear and corrosion resistances and eco-friendliness, the industrial implementation of PEO technology is limited by its relatively high …

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Plasma Electrolytic Oxidation (PEO) as a Promising Technology for the Development of High-Performance Coatings on Cast Al-Si Alloys: A Review

Patricia Fernández-López, Sofia Afonso Alves, José T. San-José, Eva Gutierrez-Berasategui et autres

Cast Al-Si alloys, recognized for their excellent mechanical properties, constitute one of the most widely employed non-ferrous substrates in several sectors, and are particularly relevant in the transport industry. Nevertheless, these alloys also display inherent limitations that significantly restrict their use in …

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Corrosion and tribocorrosion protection of novel PEO coatings on a secondary cast Al-Si alloy: Influence of polishing and sol-gel sealing

Patricia Fernández-López, Sofia Afonso Alves, Itziar Azpitarte, José T. San-José et autres

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Multifunctional TiO2 coatings developed by plasma electrolytic oxidation technique on a Ti20Nb20Zr4Ta alloy for dental applications

Ainara López-Ortega, Virginia Sáenz de Viteri, Sofia Afonso Alves, Gemma Mendoza et autres

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Enhanced tribological performance of cylinder liners made of cast aluminum alloy with high silicon content through plasma electrolytic oxidation

Sofia Afonso Alves, Patricia Fernández-López, Ainara López-Ortega, Xana Fernández et autres

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Impact of surface topography on the bacterial attachment to micro- and nano-patterned polymer films

Achille Francone, Santos Merino, Aritz Retolaza, Jorge Ramiro et autres

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