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Engineered topographies and hydrodynamics in relation to biofouling control-a review.
Environmental Science and Pollution Research ( IF 5.8 ) Pub Date : 2020-09-24 , DOI: 10.1007/s11356-020-10864-3
Partha Halder 1 , Nazia Hossain 1 , Biplob Kumar Pramanik 1 , Muhammed A Bhuiyan 1
Affiliation  

Biofouling, the unwanted growth of microorganisms on submerged surfaces, has appeared as a significant impediment for underwater structures, water vessels, and medical devices. For fixing the biofouling issue, modification of the submerged surface is being experimented as a non-toxic approach worldwide. This technique necessitated altering the surface topography and roughness and developing a surface with a nano- to micro-structured pattern. The main objective of this study is to review the recent advancements in surface modification and hydrodynamic analysis concerning biofouling control. This study described the occurrence of the biofouling process, techniques suitable for biofouling control, and current state of research advancements comprehensively. Different biofilms under various hydrodynamic conditions have also been outlined in this study. Scenarios of biomimetic surfaces and underwater super-hydrophobicity, locomotion of microorganisms, nano- and micro-hydrodynamics on various surfaces around microorganisms, and material stiffness were explained thoroughly. The review also documented the approaches to inhibit the initial settlement of microorganisms and prolong the subsequent biofilm formation process for patterned surfaces. Though it is well documented that biofouling can be controlled to various degrees with different nano- and micro-structured patterned surfaces, the understanding of the underlying mechanism is still imprecise. Therefore, this review strived to present the possibilities of implementing the patterned surfaces as a physical deterrent against the settlement of fouling organisms and developing an active microfluidic environment to inhibit the initial bacterial settlement process. In general, microtopography equivalent to that of bacterial cells influences attachment via hydrodynamics, topography-induced cell placement, and air-entrapment, whereas nanotopography influences physicochemical forces through macromolecular conditioning.

中文翻译:

与生物污垢控制相关的工程地形和流体动力学——综述。

生物污垢,即微生物在水下表面的有害生长,已成为水下结构、水船和医疗设备的重大障碍。为了解决生物污染问题,世界范围内正在试验对浸没表面进行改造,作为一种无毒的方法。该技术需要改变表面形貌和粗糙度,并开发具有纳米到微结构图案的表面。本研究的主要目的是回顾有关生物污垢控制的表面改性和流体动力学分析的最新进展。该研究全面描述了生物污垢过程的发生、适用于生物污垢控制的技术以及研究进展的现状。本研究还概述了各种流体动力学条件下的不同生物膜。对仿生表面和水下超疏水性、微生物运动、微生物周围各种表面上的纳米和微流体动力学以及材料刚度的场景进行了详尽的解释。该评论还记录了抑制微生物初始沉降和延长图案表面的后续生物膜形成过程的方法。尽管有充分的文献证明,可以使用不同的纳米和微结构图案表面在不同程度上控制生物污垢,但对潜在机制的理解仍然不准确。所以,这篇综述力图展示将图案化表面作为物理威慑物来阻止污垢生物的沉降,并开发一个活跃的微流体环境来抑制最初的细菌沉降过程的可能性。一般来说,与细菌细胞相当的微地形通过流体动力学、地形诱导的细胞放置和空气截留影响附着,而纳米地形通过大分子调节影响物理化学力。
更新日期:2020-09-24
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