Using Bio-Replicated Forming Technologies to Fabricate Shark-Skin Surface

Pu, Ximing; Li, Guangji; Hanlu, Huang; Liu, Yunhong; Ashraf, Muhammad Aqeel

doi:10.1590/1678-4324-2017160511

Cited by 4 publications

(2 citation statements)

References 17 publications

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“…Shark-skin surface morphology is another example of bioinspired structure attributing to the drag reduction over the surface. The surface of the shark skin is embedded with small individual tooth-like scales (dermal denticles) textured with some longitudinal grooves [ 167 , 168 , 169 ]. The presence of longitudinal grooves over the surface of shark skin allows them to align parallel to the flowing direction of the water.…”

Section: Biomimetic Surfaces Inspired By Animalsmentioning

confidence: 99%

Tribological Behavior of Bioinspired Surfaces

Шарма

Grewal

2023

Biomimetics

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Energy losses due to various tribological phenomena pose a significant challenge to sustainable development. These energy losses also contribute toward increased emissions of greenhouse gases. Various attempts have been made to reduce energy consumption through the use of various surface engineering solutions. The bioinspired surfaces can provide a sustainable solution to address these tribological challenges by minimizing friction and wear. The current study majorly focuses on the recent advancements in the tribological behavior of bioinspired surfaces and bio-inspired materials. The miniaturization of technological devices has increased the need to understand micro- and nano-scale tribological behavior, which could significantly reduce energy wastage and material degradation. Integrating advanced research methods is crucial in developing new aspects of structures and characteristics of biological materials. Depending upon the interaction of the species with the surrounding, the present study is divided into segments depicting the tribological behavior of the biological surfaces inspired by animals and plants. The mimicking of bio-inspired surfaces resulted in significant noise, friction, and drag reduction, promoting the development of anti-wear and anti-adhesion surfaces. Along with the reduction in friction through the bioinspired surface, a few studies providing evidence for the enhancement in the frictional properties were also depicted.

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Section: Biomimetic Surfaces Inspired By Animalsmentioning

confidence: 99%

Tribological Behavior of Bioinspired Surfaces

Шарма

Grewal

2023

Biomimetics

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“…In recent years, researchers have explored the possibility of leveraging topography, inspired by natural surfaces with antifouling or bactericidal properties, to create antimicrobial and antifouling materials. Examples of nanostructured surfaces include rice and lotus leaves, , shark skin, cicada wings, gecko skin, and dragonfly wings. , These surfaces share a common characteristic: they are composed of nanotopographies that are lethal to bacteria, with the mechanism of action involving damage or rupture to the cell membrane due to physical contact with these nanoscale features . Similarly, our group has reported on the use of high-aspect-ratio biomimetic topography on bacterial nanocellulose and poly(dimethylsiloxane), which has shown the ability to effectively kill bacterial strains through the application of nanomechanical stresses.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Antibacterial Efficacy and Cellular Alignment Regulation on Plasma Nanotextured Chitosan Surfaces

Jaramillo-Correa,

Posada,

Nashed

et al. 2023

Langmuir

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To address implant-related infections, antibacterial solutions specific to biomaterials are required to prevent bacterial proliferation. Traditional antibiotic usage has been found insufficient, motivating researchers to investigate alternative strategies such as surface modification and the application of antifouling or infection-resistant properties. A developing interest lies in designing surfaces that mimic natural antibacterial nanotopographies. In this study, we conducted a quantitative analysis of the outcomes from plasma nanotexturing, with particular emphasis on how the organization of topography influences antibacterial efficacy and the regulation of cell alignment. Plasma nanotexturing was applied to chitosan surfaces, which gradually transformed from nanopores to pillars and eventually into tilted pillars, as the plasma parameters (fluence and angle) increased. We used directed plasma nanosynthesis, a plasma-based technique that primarily induces topographical alterations on the surfaces. The surfaces were systematically characterized, incorporating methods such as scanning electron microscopy (SEM), atomic force microscopy (AFM), and X-ray photoelectron spectroscopy (XPS). A comprehensive comparison of the nanotextures was executed by utilizing a trapezoidal method to calculate aspect ratios and assess texture orientation by examining the gaps in the nanostructures. We evaluated antibacterial properties against E. coli and S. aureus strains and assessed the survival and alignment of human bone marrow mesenchymal stem cells. Our findings reveal a significant reduction in bacterial adhesion (>80%) and growth on nanotextured surfaces, underscoring their potential for clinical applications. Moreover, we measured cell alignment, presenting the results in both a color-coded and numerical format to demonstrate the preferential alignment orientation induced specially by the tilted nanotexture. These insights highlight the profound impacts of plasma nanotexturing, indicating its potential for innovative biomedical applications such as advanced wound healing and tissue engineering.

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