Synthesis of ZnO nanoparticles and study of their influence on the mechanical properties and antibacterial activity of PMMA/ZnO composite for orthotic devices

Khlifi, Kaouther.; Atallah, Mohamed Salah.; Cherif, Ichraf.; Karkouch, Ines; Barhoumi, Najoua.; Attia-Essaies, Sameh.

doi:10.1016/j.surfin.2023.103279

Cited by 2 publications

(1 citation statement)

References 26 publications

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“…ZnO − and CuO NPs , show good antibacterial activity against Gram-positive and Gram-negative bacteria. However, a comparative analysis of antibacterial activity considering various NP morphologies of ZnO and CuO , remains incomplete.…”

Section: Introductionmentioning

confidence: 99%

Biocompatible Polyelectrolyte Multilayers with Copper Oxide and Zinc Oxide Nanoparticles for Inhibiting Bacterial Growth

Matijaković Mlinarić,

Altenried,

Selmani

et al. 2024

ACS Appl. Nano Mater.

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The prevalence of bacterial infections presents a significant challenge in the medical field, demanding effective strategies to impede bacterial adhesion and growth on various surfaces. The conducted study investigates the efficacy of polyelectrolyte multilayers�comprising poly(allylamine hydrochloride) (PAH) and alginate (ALG)�embedded with zinc oxide (ZnO) and copper oxide (CuO) nanoparticles (NPs) to inhibit bacterial adhesion on stainless-steel surfaces. Surface characterization involved zeta potential, contact angle, and roughness assessments. The effect of NP composition, size, and morphology in conjunction with polycation or polyanion terminating multilayers was evaluated against planktonic and surface-adhered Escherichia coli (E. coli) cells. Surfaces with the positively charged PAH-terminating multilayer displayed higher water contact angles (≈ 63°) than the negatively charged ALG-terminating multilayers (≈ 45°). Multilayers containing ZnO NPs showed a significant inhibition of planktonic E. coli growth, >99%. Moreover, complete growth inhibition of surface-adhered E. coli was achieved for multilayers containing both ZnO and CuO. Due to their larger specific surface area, rod-like ZnO NPs displayed higher antibacterial activity. The samples with ALG as the terminating layer showed more substantial antibacterial properties than samples with PAH as the terminating layer. Biocompatibility tests on immortalized human keratinocyte cells revealed good compatibility with multilayers incorporating NPs. In summary, this study underscores the potential of ZnO and CuO NPs within PAH/ALG multilayers for antibacterial applications without compromising their cytocompatibility.

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Section: Introductionmentioning

confidence: 99%

Biocompatible Polyelectrolyte Multilayers with Copper Oxide and Zinc Oxide Nanoparticles for Inhibiting Bacterial Growth

Matijaković Mlinarić,

Altenried,

Selmani

et al. 2024

ACS Appl. Nano Mater.

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Advances in Photonic Crystal Research for Structural Color

Chen,

Wei,

Pan

et al. 2024

Adv Materials Technologies

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Structural color is a remarkable physical phenomenon that exists widely in nature. Unlike traditional color rendering methods, they are realized mainly through micro/nanostructures that interfere, diffract, scatter light, and exhibit long‐life and environmental‐friendly color effects. In nature, a few organisms use their color‐changing system to transmit information, such as courtship, warning, or disguise. Meanwhile, some natural inorganic minerals can also exhibit structural colors. Learning from nature, scientists have achieved large‐scale structural color design and manufacturing technology for artificial photonic crystals. Photonic crystals have a unique microstructure that forms a band gap under the action of the periodic potential field, consequently causing Bragg scattering due to the periodic arrangement of different refractive index media within them. Because of the apparent photonic band gap and the ability to form local photons at crystal defects, photonic crystals have been extensively studied in recent years and have broad application prospects in photonic fibers, optical computers, chips, and other fields. In this review, the research, properties, and applications of photonic crystals in recent years are presented, as well as insight into the future developments of photonic crystals.

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Synthesis of ZnO nanoparticles and study of their influence on the mechanical properties and antibacterial activity of PMMA/ZnO composite for orthotic devices

Cited by 2 publications

References 26 publications

Biocompatible Polyelectrolyte Multilayers with Copper Oxide and Zinc Oxide Nanoparticles for Inhibiting Bacterial Growth

Biocompatible Polyelectrolyte Multilayers with Copper Oxide and Zinc Oxide Nanoparticles for Inhibiting Bacterial Growth

Advances in Photonic Crystal Research for Structural Color

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