Enhancing the contact-killing effect of copper by surface laser texturing

Caro-Lara, Luis; Vargas, Ignacio T.; Ramos-Moore, E.; Galarce, Carlos; Díaz-Droguett, D.E.; Pizarro, Gonzalo

doi:10.1016/j.jece.2022.108497

Cited by 5 publications

(6 citation statements)

References 41 publications

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“…246 Copyright 2021, Elsevier; (B2) utilizing direct laser interference patterning (DLIP) to assess the impact of surface topography and chemistry on the antimicrobial capabilities against noncopper-resistant bacterium E. coli and the coppertolerant bacterium Variovorax sp. 247 Copyright 2022, Elsevier. (C1) and (C2) Mechanisms of resistance to bacterial adhesion on hydrophobic surfaces.…”

Section: Surface Micro-nano Structurementioning

confidence: 99%

Construction of antibacterial bone implants and their application in bone regeneration

Feng,

He,

et al. 2024

Mater. Horiz.

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Section: Surface Micro-nano Structurementioning

confidence: 99%

Construction of antibacterial bone implants and their application in bone regeneration

Feng,

He,

et al. 2024

Mater. Horiz.

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“…Materials that act per se antimicrobial (like Cu or Ni) will very likely show a more pronounced antimicrobial effect when laserprocessing results in the generation of holes and cavities that increase the contact area between bacterial cells and surface. [124][125][126][127] Additionally, papers describe combinations of surface structure and killing agents like polyaniline, [128] acetylsalicylic acid, [129] and surface charge. [92] Ahmed et al revealed the role of the chemical modification of fs-laser DLIP-structured copper-alloy (brass with 37% of Zn, CuZn37) concerning the antimicrobial efficiency through the presence of a near-surface layer of a few hundred nanometers thickness.…”

Section: Laser-induced Chemistrymentioning

confidence: 99%

“…Materials that act per se antimicrobial (like Cu or Ni) will very likely show a more pronounced antimicrobial effect when laser‐processing results in the generation of holes and cavities that increase the contact area between bacterial cells and surface. [ 124–127 ] Additionally, papers describe combinations of surface structure and killing agents like polyaniline, [ 128 ] acetylsalicylic acid, [ 129 ] and surface charge. [ 92 ]…”

Section: Bacterial Adhesion On Laser‐generated Surface Structuresmentioning

confidence: 99%

Laser‐Textured Surfaces: A Way to Control Biofilm Formation?

Schwibbert,

Richter,

Krüger

et al. 2023

Laser & Photonics Reviews

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Bacterial biofilms pose serious problems in medical and industrial settings. One of the major societal challenges lies in the increasing resistance of bacteria against biocides used in antimicrobial treatments, e.g., via overabundant use in medicine, industry, and agriculture or cleaning and disinfection in private households. Hence, new efficient bacteria‐repellent strategies avoiding the use of biocides are strongly desired. One promising route to achieve bacteria‐repellent surfaces lies in the contactless and aseptic large‐area laser‐processing of technical surfaces. Tailored surface textures, enabled by different laser‐processing strategies that result in topographic scales ranging from nanometers to micrometers may provide a solution to this challenge. This article presents a current state‐of‐the‐art review of laser‐surface subtractive texturing approaches for controlling the biofilm formation for different bacterial strains and in different environments. Based on specific properties of bacteria and laser‐processed surfaces, the challenges of anti‐microbial surface designs are discussed, and future directions will be outlined.

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“…Recent studies have confirmed the efficacy of copper as an antimicrobial agent, with research indicating that copper surfaces can reduce bacterial contamination by up to 99.900% [1]. This is due to the ability of copper ions to disrupt the cell membranes of microorganisms, ultimately leading to their death [4]. Moreover, copper's antimicrobial properties have been found to be particularly effective against antibiotic-resistant bacteria, making it an attractive alternative to traditional antibiotics in the fight against infections [5].…”

Section: Introductionmentioning

confidence: 96%

Micro-Addition of Silver to Copper: One Small Step in Composition, a Change for a Giant Leap in Biocidal Activity

Vital,

Silva,

Santos

et al. 2024

Materials

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The use of copper as an antimicrobial agent has a long history and has gained renewed interest in the context of the COVID-19 pandemic. In this study, the authors investigated the antimicrobial properties of an alloy composed of copper with a small percentage of silver (Cu-0.03% wt.Ag). The alloy was tested against various pathogens, including Escherichia coli, Staphylococcus aureus, Candida albicans, Pseudomonas aeruginosa, and the H1N1 virus, using contact exposure tests. Results showed that the alloy was capable of inactivating these pathogens in two hours or less, indicating its strong antimicrobial activity. Electrochemical measurements were also performed, revealing that the small addition of silver to copper promoted a higher resistance to corrosion and shifted the formation of copper ions to higher potentials. This shift led to a slow but continuous release of Cu2+ ions, which have high biocidal activity. These findings show that the addition of small amounts of silver to copper can enhance its biocidal properties and improve its effectiveness as an antimicrobial material.

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Enhancing the contact-killing effect of copper by surface laser texturing

Cited by 5 publications

References 41 publications

Construction of antibacterial bone implants and their application in bone regeneration

Construction of antibacterial bone implants and their application in bone regeneration

Laser‐Textured Surfaces: A Way to Control Biofilm Formation?

Micro-Addition of Silver to Copper: One Small Step in Composition, a Change for a Giant Leap in Biocidal Activity

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