An anti-bacterial approach to nanoscale roughening of biomimetic rice-like pattern PP by thermal annealing

Nodoushan, Emad Jafari; Ebrahimi, Nadereh Golshan; Ayazi, Masoumeh

doi:10.1016/j.apsusc.2017.06.193

Cited by 22 publications

(11 citation statements)

References 30 publications

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“…In other words, for both coatings, there was a high index of water repulsion, but the RA was not sufficient and the durability of the coatings was poor. Studies have indicated the precondition for repelling bacteria and biofilm (which can be found in a variety of shapes and angles) from surfaces with a RA of about 0° …”

Section: Resultsmentioning

confidence: 99%

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Fluorine-Free Superhydrophobic Coating with Antibiofilm Properties Based on Pickering Emulsion Templating

Mor

Mani

Yaakov

et al. 2021

ACS Appl. Mater. Interfaces

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This study presents antibiofilm coating formulations based on Pickering emulsion templating. The coating contains no bioactive material because its antibiofilm properties stem from passive mechanisms that derive solely from the superhydrophobic nature of the coating. Moreover, unlike most of the superhydrophobic formulations, our system is fluorine-free, thus making the method eminently suitable for food and medical applications. The coating formulation is based on water in toluene or xylene emulsions that are stabilized using commercial hydrophobic silica, with polydimethylsiloxane (PDMS) dissolved in toluene or xylene. The structure of the emulsions and their stability was characterized by confocal microscopy and cryogenic-scanning electron microscopy (cryo-SEM). The most stable emulsions are applied on polypropylene (PP) surfaces and dried in an oven to form PDMS/silica coatings in a process called emulsion templating. The structure of the resulting coatings was investigated by atomic force microscopy (AFM) and SEM. The surface of the coatings shows a honeycomb-like structure that exhibits a combination of micron-scale and nanoscale roughness, which endows it with its superhydrophobic properties. After tuning, the superhydrophobic properties of the coatings demonstrated highly efficient passive antibiofilm activity. In vitro antibiofilm trials with E. coli indicate that the coatings reduced the biofilm accumulation by 83% in the xylene–water-based surfaces and by 59% in the case of toluene–water-based surfaces.

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Section: Resultsmentioning

confidence: 99%

“…Studies have indicated the precondition for repelling bacteria and biofilm (which can be found in a variety of shapes and angles) from surfaces with a RA of about 0°. 65 2.2. Superhydrophobic Coatings Based on Inverse Pickering Emulsions with PDMS.…”

Section: Resultsmentioning

confidence: 99%

Fluorine-Free Superhydrophobic Coating with Antibiofilm Properties Based on Pickering Emulsion Templating

Mor

Mani

Yaakov

et al. 2021

ACS Appl. Mater. Interfaces

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“…Nodoushan et al have observed that patterned surface exhibits weak interaction with the bacteria leading to a lower count in bacterial cells. [ 83 ] Moreover, the changed chemical composition (revealed from EDAX analysis) in the textured area as compared to untreated Ti surface, may inhibit the bacterial adhesion. In addition, enhanced surface roughness of textured area ( R q = 935 nm) may further lower down the fraction of adherent bacteria in the patterned surface as compared to the nonlaser treated, brush modified smooth surface ( R q = 15.3 nm).…”

Section: Resultsmentioning

confidence: 99%

Protein Patterning on Microtextured Polymeric Nanobrush Templates Obtained by Nanosecond Fiber Laser

Verma

Rana

Vidyasagar

et al. 2022

Macromolecular Bioscience

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Micropatterned polymer brushes have attracted attention in several biomedical areas, i.e., tissue engineering, protein microarray, biosensors, etc., for precise arrangement of biomolecules. Herein, a facile and scalable approach is reported to create microtextured polymer brushes with the ability to generate different type of protein patterns. Nanosecond fiber laser is exploited to generate micropatterns on poly(poly(ethylene glycol) methacrylate) (polyPEGMA) brush modified Ti alloy substrate. Surface initiated atom transfer radical polymerization is employed to grow PolyPEGMA brush (11–87 nm thick) on Ti alloy surface immobilized with initiator having an initiator density (σ*) of 1.5 initiators per nm2. Polymer brushes are then selectively laser ablated and their presence on nontextured area is confirmed by atomic force microscopy, fluorescence microscopy, and X‐ray photoelectron spectroscopy. Spatial orientation of biomolecules is first achieved by nonspecific protein adsorption on areas ablated by the laser, via physisorption. Further, patterned brushes of polyPEGMA are modified to activated ester that gives rise to protein conjugation specifically on nonlaser ablated brush areas. Moreover, the laser ablated brush modified patterned template is also successfully utilized for generating alternate patterns of bacteria. This promising technique can be further extended to create interesting patterns of several biomolecules which are of great interest to biomedical research community.

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“…Incorporation of the honey/silk scaffold with the rose petal surface micro/nano structure is a suitable strategy against MRSA and MSCs proliferation. [210] In addition to the two aforementioned micro/nanopatterns found on the lotus leaf and rose petal, molding of the rice leaf [70] and Laminaria japonica [37] produces superhydrophobic antibacterial structures. Switchable properties of different micro/nano structures on plants such as rose petals, lotus leaves, and rice leaves have been reported.…”

Section: Biomimicking Micro/nano Nanofeatures Of Plantsmentioning

confidence: 99%

Design and Properties of Antimicrobial Biomaterials Surfaces

Mehrjou

Liu

et al. 2022

Adv Healthcare Materials

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Emergence of antibiotic-resistance pathogens has caused serious health issues and if the current trend is to continue, treatment of the infection will become complicated and even unsuccessful due to new antimicrobial resistance (AMR). Therefore, there is a global drive to identify new methods to treat infection and develop better antibacterial materials and therapy. Although new and more potent antibiotics have aided the fight against microbes, they only offer a temporary solution because future bacteria strains may become resistant to these antibiotics and drugs. Recently, application of non-biological methods such as, electrical currents and photothermal/dynamic therapies to kill bacteria, reveal new approaches to design antimicrobial biomaterials, as complications stemming from drug-resistant bacteria can be obviated. Furthermore, recent research has focused on mimicking the surface patterns on plants and insects such as lotus leaves and dragonfly wings. Bio-inspired micro/nano patterns have been replicated on a variety of biomaterials to improve the bacterial resistance and other properties with good success. This is an exciting research area with immense practical and clinical potentials. In this review, recent advances in the application of chemical/biological approaches to combat bacterial infection and AMR are summarized and the related mechanisms are discussed.

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An anti-bacterial approach to nanoscale roughening of biomimetic rice-like pattern PP by thermal annealing

Cited by 22 publications

References 30 publications

Fluorine-Free Superhydrophobic Coating with Antibiofilm Properties Based on Pickering Emulsion Templating

Fluorine-Free Superhydrophobic Coating with Antibiofilm Properties Based on Pickering Emulsion Templating

Protein Patterning on Microtextured Polymeric Nanobrush Templates Obtained by Nanosecond Fiber Laser

Design and Properties of Antimicrobial Biomaterials Surfaces

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