Nature‐Inspired Biomimetic Surfaces for Controlling Bacterial Attachment and Biofilm Development

Oopath, Sruthi Venugopal; Baji, Avinash; Abtahi, Mojtaba; Luu, Trong Quan; Vasilev, Krasimir; Truong, Vi Khanh

doi:10.1002/admi.202201425

Cited by 39 publications

(35 citation statements)

References 113 publications

(226 reference statements)

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“…16,18 Such nanostructured surfaces inhibit bacterial attachment, as the presence of the nanostructures deforms the cell membrane, impedes their movement, and leads to the rupture of the cell membrane. 16,21 Reproducing similar nanopillar arrays and other nanostructured architecture on synthetic materials will help them to mimic the antibacterial behavior displayed by the natural materials. Toward this goal, studies have replicated the nanostructures of natural materials using soft lithography that is based on the formation of a negative mold of the natural material, followed by producing the replica from the negative surface.…”

Section: Resultsmentioning

confidence: 99%

“…Recently, researchers have sought to achieve antibacterial properties based on mechanical interactions between the surface and the bacterial cells. 12,13,15,16,18 Many naturally occurring materials such as wings of insects, leaves of plants, and gecko skin have unique micro-and nanostructures that help them to display similar antibacterial mechanisms. 16,21 For example, the surface of cicada wings has attained antibacterial properties, as its wings are covered with an array of nanoneedles.…”

Section: Introductionmentioning

confidence: 99%

“…12,13,15,16,18 Many naturally occurring materials such as wings of insects, leaves of plants, and gecko skin have unique micro-and nanostructures that help them to display similar antibacterial mechanisms. 16,21 For example, the surface of cicada wings has attained antibacterial properties, as its wings are covered with an array of nanoneedles. 22−24 Thus, the wings of cicadas can kill Gramnegative bacteria within 5 min of contact.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Rose Petal Mimetic Surfaces with Antibacterial Properties Produced Using Nanoimprint Lithography

Oopath

Martins

Kakarla

et al. 2023

ACS Appl. Bio Mater.

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In this study, we produced bioinspired micro/nanotopography on the surface of poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) films and demonstrated that these films display antibacterial properties. In the first step, structures that are found on the surface of a rose petal were copied on the surface of PVDF-HFP films. Following this, a hydrothermal method was used to grow ZnO nanostructures on top of this rose petal mimetic surface. The antibacterial behavior of the fabricated sample was demonstrated against Gram-positive Streptococcus agalactiae (S. agalactiae) and Gram-negative Escherichia coli (E. coli) as model bacteria. For comparison purposes, the antibacterial behavior of a neat PVDF-HFP film was also investigated against both bacterial species. The results show that the presence of rose petal mimetic structures on PVDF-HFP helped the material to display improved antibacterial performance against both S. agalactiae and E. coli compared to the antibacterial performance of neat PVDF-HFP. The antibacterial performance was further enhanced for samples that had both rose petal mimetic topography and ZnO nanostructures on the surface.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Rose Petal Mimetic Surfaces with Antibacterial Properties Produced Using Nanoimprint Lithography

Oopath

Martins

Kakarla

et al. 2023

ACS Appl. Bio Mater.

Self Cite

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“…The scanning electron microscopy (SEM) images of the etched region were covered with numerous Cu(OH) 2 clusters of several neighboring incline nanoneedles with the diameter of 100 nm, which was in the similar range of the nanospikes found on insect wings (i.e., cicada and dragonfly wings). [45][46][47][48] The tilted and staggered nanoneedles formed microclusters. On the top of each microcluster, there usually is a nanoflower with several nanopores.…”

Section: Characterization Of the Spheres With Janus Nanostructure Coa...mentioning

confidence: 99%

Bioinspired Drag Reduction of Cavities Induced by Janus Nanostructure Interfaces on Hydrophobic Spheres Plunging into Water with a Low Speed

Xie

Yao

Shi

et al. 2023

Adv Materials Inter

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forces are always experienced. Thus, hydrodynamic drag reduction is crucial for avoiding speed loss and improving energy efficiency. [1] In general, there are two main forms of hydrodynamic drag resistance, i.e., skin friction (friction drag force) and the form drag force. Skin friction is the friction between a fluid and the surface of a solid moving through it or between a moving fluid and its enclosing surface as a result of fluid viscosity. Skin friction is the key factor for a streamlined body, such as a submarine or torpedo. [2] Form drag occurs from the pressure difference due to the physical dimensions of the object obstructing and altering the flow of the fluid (i.e., flowseparation phenomena). On a blunt body, the form of drag underwater is much greater than the skin friction. [3,4] Consequently, for hydrodynamic drag reduction, it is essential to reduce the form of drag on a blunt body.The innovative approach of form drag reduction is realized by changing the shape of the blunt body to a streamlined body through introducing a cavity. [3][4][5][6][7] The cavity can be generated by the principle of natural cavitation on underwater objects because the water near the head of the object is vaporized to generate cavitation when the speed of the object is high enough. [8,9] However, at low speeds, the cavity greatly depends on the air-capture process when the object impacts the water surface. [10,11] If the water disturbance and water splashing outward along the object create an open splash crown for air to enter during the impacting process, more air is drawn into the cavity with the object continuously falling. Then, due to the hydrostatic pressure of the surrounding water and the capillary force, the middle of the cavity gradually shrinks until it is clipped, and then a streamlined cavity form. [12] The behavior of water regulation on the object interfaces (i.e., water disturbance and water splashing outward) is significantly relayed on the characteristics of the object interface, including wettability, [13][14][15] microstructure, [16,17] and surface energy distribution. The static unwetted interfaces, such as the superhydrophobic [18][19][20][21][22][23][24][25] and Leidonfrost [26][27][28][29] interfaces, prevent water from penetrating the space between the microscale and/or nanoscale structures, leading to a Cassie-Baxter wetting regime and then water splashing outward. A superhydrophobic interface is generally characterized by low surface free energy Form drag of the blunt object occurs from the pressure difference due to the physical dimensions of the object obstructing and altering the flow of the fluid. The innovative approach of form drag reduction is real ized by changing the shape of the blunt object to a streamlined body by introducing a cavity. The construction of superhydrophobic interfaces is widely considered as the best solution for introducing a cavity, because water is prevented from penetrating the space between the nanoscale structures, leading to a Cassie-Baxter wetting regime and the...

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“…Also, nanomaterials can generate lethal damage to microbes through a physical process that destroys extracellular polymeric substances (EPS) using either enzymes or mechanical forces [4] . Insect wings have nanometer-sized structures with the potential to break EPS [5] .…”

Section: Introductionmentioning

confidence: 99%

Honeybee wings hold antibiofouling and antimicrobial clues for improved applications in health care and industries

et al. 2023

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<abstract> <p>Natural surfaces with remarkable properties and functionality have become the focus of intense research. Heretofore, the natural antimicrobial properties of insect wings have inspired research into their applications. The wings of cicadas, butterflies, dragonflies, and damselflies have evolved phenomenal anti-biofouling and antimicrobial properties. These wings are covered by periodic topography ranging from highly ordered hexagonal arrays of nanopillars to intricate “Christmas-tree” like structures with the ability to kill microbes by physically rupturing the cell membrane. In contrast, the topography of honeybee wings has received less attention. The role topography plays in antibiofouling, and antimicrobial activity of honeybee wings has never been investigated. Here, through antimicrobial and electron microscopy studies, we showed that pristine honeybee wings displayed no microbes on the wing surface. Also, the wings displayed antimicrobial properties that disrupt microbial cells and inhibit their growth. The antimicrobial activities of the wings were extremely effective at inhibiting the growth of Gram-negative bacterial cells when compared to Gram-positive bacterial cells. The fore wing was effective at inhibiting the growth of Gram-negative bacteria compared to Gram-positive samples. Electron microscopy revealed that the wings were studded with an array of rough, sharp, and pointed pillars that were distributed on both the dorsal and ventral sides, which enhanced anti-biofouling and antimicrobial effects. Our findings demonstrate the potential benefits of incorporating honeybee wings nanopatterns into the design of antibacterial nanomaterials which can be translated into countless applications in healthcare and industry.</p> <p><graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="microbiol-09-02-018-g006.tif"/></p> </abstract>

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Nature‐Inspired Biomimetic Surfaces for Controlling Bacterial Attachment and Biofilm Development

Cited by 39 publications

References 113 publications

Rose Petal Mimetic Surfaces with Antibacterial Properties Produced Using Nanoimprint Lithography

Rose Petal Mimetic Surfaces with Antibacterial Properties Produced Using Nanoimprint Lithography

Bioinspired Drag Reduction of Cavities Induced by Janus Nanostructure Interfaces on Hydrophobic Spheres Plunging into Water with a Low Speed

Honeybee wings hold antibiofouling and antimicrobial clues for improved applications in health care and industries

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