Review
Biochemistry & Molecular Biology
Javiera Ramos-Zuniga, Nicolas Bruna, Jose M. Perez-Donoso
Summary: Copper is a historically used metal to prevent infections and has potential in combating infectious disease outbreaks. Copper nanoparticles and surfaces are common antimicrobial copper-based technologies. The mechanisms explaining their unique antimicrobial properties are not fully understood, but involve membrane rupture, ion accumulation, protein inactivation, and DNA damage. Understanding the toxicity mechanisms of copper nanoparticles and surfaces is important for developing efficient antimicrobial technologies.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Review
Food Science & Technology
Saeed Paidari, Reza Tahergorabi, Ensieh Sadat Anari, Abdorezza Moahammdi Nafchi, Nafiseh Zamindar, Mohammad Goli
Summary: Nanotechnology has brought new opportunities to the food industry by enhancing the mechanical and antimicrobial properties of food packaging through the addition of nanoparticles. However, concerns regarding the potential adverse effects of nanoparticles on human health have led to legislative and regulatory actions. The inhibitory effects of nano packaging on various microorganisms, as well as the perspectives of organizations like WHO, FDA, and ESFA on nano-silver application in food packaging, have been studied and discussed.
Article
Biotechnology & Applied Microbiology
Karine Patrin Pontin, Karen Apellanis Borges, Thales Quedi Furian, Daiane Carvalho, Daiane Elisa Wilsmann, Henrique Ribeiro Piaggio Cardoso, Annelise Kopp Alves, Gabriela Zottis Chitolina, Carlos Tadeu Pippi Salle, Hamilton Luiz de Souza Moraes, Vladimir Pinheiro do Nascimento
Summary: The study confirmed the antimicrobial activity of copper surfaces against Salmonella biofilm and demonstrated uniform corrosion comparable to commonly used surfaces.
Review
Public, Environmental & Occupational Health
Paula Aillon-Garcia, Blanca Parga-Landa, Francisco Guillen-Grima
Summary: This systematic review evaluates the efficacy of copper surfaces in reducing microbial burden in healthcare settings. The results indicate that copper materials can significantly reduce bacterial contamination, suggesting their potential as a preventive tool against hospital-acquired infections.
AMERICAN JOURNAL OF INFECTION CONTROL
(2023)
Review
Green & Sustainable Science & Technology
Ling Xin Yong, John Kaiser Calautit
Summary: This review paper explores various antimicrobial technologies for surfaces in the built environment, highlighting the importance of mitigating microbial infection risk, particularly in densely populated urban cities and poorly ventilated indoor environments. The study assesses recent advancements and emphasizes the need for comprehensive evaluation and customization of antimicrobial technologies for different built environments. The industry and stakeholders can benefit from long-term evaluation to enhance the adoption and effectiveness of antimicrobial surfaces in different real-life settings.
Review
Engineering, Multidisciplinary
Camelia Popescu, Sophie Alain, Mathis Courant, Armelle Vardelle, Alain Denoirjean, Marjorie Cavarroc
Summary: Currently, there is a significant effort to design cost-effective coatings that can protect surfaces from microorganisms. This systematic review focuses on copper coatings deposited on thermoplastics by thermal spray techniques, exploring the role of surface roughness, material microstructure, and surface chemistry in microorganisms' inactivation. The study also highlights the interaction mechanisms between metallic surfaces and microorganisms and emphasizes the need for engineered antimicrobial coatings to control the release of metal ions and comply with standard measurement methods. Furthermore, the study presents an overview of the effect of copper deposition method, coating microstructure, and surface specific oxygen species on antimicrobial properties.
ENGINEERING SCIENCE AND TECHNOLOGY-AN INTERNATIONAL JOURNAL-JESTECH
(2022)
Review
Materials Science, Multidisciplinary
Naveen Bharadishettar, Udaya K. Bhat, Devadas Bhat Panemangalore
Summary: This review paper discusses the efficient methods for depositing highly adherent copper-based antimicrobial coatings onto metal surfaces and compares the antimicrobial properties of coatings produced by various deposition methods. It highlights the influence of process parameters on antimicrobial activity and the importance of understanding the mechanism of killing microbes for developing antimicrobial surfaces.
Article
Chemistry, Multidisciplinary
Joey Andrew A. Valinton, Alfin Kurniawan, Ren-Huai Jhang, Christian R. Pangilinan, Che-Hsin Lee, Chun-Hu Chen
Summary: In this study, a robust antimicrobial coating with high transparency, durability, and bactericidal activity was developed on smartphone screen protectors using an acidic redox-assisted deposition method. The coatings showed excellent performance against swiping and wet cleaning. The bactericidal activity was mainly attributed to the high intake of Cu2+ in the coating, and the presence of Ag+ and Zn2+ was necessary for complete eradication. The coatings were successfully extended to other hand-touched surfaces in public areas.
Article
Infectious Diseases
Akiko Yamamoto, Shinji Tanaka, Keiichiro Ohishi
Summary: Copper and its alloys exhibit bactericidal activity through nucleic acid degradation, inhibiting horizontal gene transfer. Higher copper content in the alloys leads to increased nucleic acid degradability and antibacterial activities, demonstrating the potential of copper surfaces for antimicrobial applications.
Article
Materials Science, Multidisciplinary
Pedro Costa, Rita Policia, Nikola Perinka, Yolanda Alesanco, Ana Vinuales, Estela O. Carvalho, Nelson Pereira, Margarida M. Fernandes, Senentxu Lanceros-Mendez
Summary: In this study, a highly antimicrobial and sensorial material for high traffic surface coatings was developed. The material consists of polyvinylidene fluoride and copper core-shell nanowires, which exhibit strong antimicrobial effects against Escherichia coli and Staphylococcus epidermidis while maintaining biocompatibility with mammalian cells. The addition of copper core-shell nanowires provides antimicrobial activity and suitable mechanical and electrical characteristics for the development of an antimicrobial capacitive touch sensing matrix for interactive surfaces.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Biotechnology & Applied Microbiology
Claudia Justin Blehm, Marina Silveira Gregis Monteiro, Marjo Cado Bessa, Mariana Leyser, Amanda Simao Dias, Juliana Sumienski, Stephanie Wagner Gallo, Anelise Baptista da Silva, Andressa Barros, Roberta Marco, Camila Piuco Preve, Carlos Alexandre Sanchez Ferreira, Fabiano Ramos, Silvia Dias de Oliveira
Summary: Healthcare-associated infections are a global challenge, and copper coating films may be an effective strategy to mitigate these infections.
Review
Chemistry, Physical
Denver P. Linklater, Samson W. L. Mah, Vassil Tzanov, Vladimir Baulin, Natalie A. Borg, Graeme Moad, Ranya Simons, Andrea J. O'Connor, Elena P. Ivanova
Summary: Due to the high density of human populations within enclosed spaces, respiratory viruses are mainly transmitted via airborne aerosols or indirect contact. This perspective outlines the recent developments of antiviral surfaces and the potential use of nanostructured surfaces for virus inactivation. However, there are limited nano-fabrication approaches and a lack of understanding of efficient virucidal surfaces.
CURRENT OPINION IN COLLOID & INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Razvan Bucuresteanu, Lia-Mara Ditu, Monica Ionita, Ioan Calinescu, Valentin Raditoiu, Bogdan Cojocaru, Ludmila Otilia Cinteza, Carmen Curutiu, Alina Maria Holban, Marius Enachescu, Laura-Bianca Enache, Gabriel Mustatea, Viorel Chihaia, Adela Nicolaev, Elena-Larisa Borcan, Grigore Mihaescu
Summary: Research has shown the importance of passive antibacterial protection of surfaces in reducing microbial load and biofilm development, which can help prevent the spread of multidrug-resistant bacteria. The efficiency of a new photocatalytic antimicrobial protection method using visible light-activated paint was analyzed, showing inhibitory effects against all tested microbial strains. The composition was characterized by various analytical methods and tested for migration of metal ions, demonstrating potential for effective antimicrobial action.
Article
Chemistry, Physical
Songling Liu, Huaping Zhang, Boyang Sun, Yonghao Sun, Haiyang Bai, Weihua Wang
Summary: A new metastable phase called G-phase has been discovered, which has an ordered short-range structure and a disordered long-range structure. It is neither a glass nor a crystal but belongs to a new mesophase.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Hongru Ding, Pavana Siddhartha Kollipara, Kan Yao, Yiran Chang, Daniel J. Dickinson, Yuebing Zheng
Summary: Optical tweezers offer contact-free manipulation of small objects, but require sophisticated imaging and feedback systems for controlled motion. We develop an optothermal platform that enables multimodal manipulation of micro/nanoparticles along various surfaces, including both synthesized particles and biological cells. With this platform, we can achieve localized control of biological functions on rough surfaces of live worms and their embryos. This multimodal optothermal platform will be a powerful tool in life sciences, nanotechnology, and colloidal sciences.