生物医学用防污钢表面的超快激光诱导表面结构

IF 1 Q4 ENGINEERING, MANUFACTURING
Abhijit Cholkar, R. McCann, D. Kinahan, D. Brabazon
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引用次数: 0

摘要

金属表面由于其良好的材料特性,如高强度和生物相容性,越来越多地用于医疗应用。在医疗应用中,防污性能是一个重要的要求,特别是对于与不同类型的流体流接触的植入物和医疗设备。这些应该是防污的,以防止污染和腐蚀。激光加工方法,如超快激光加工是一步可扩展的表面纹理加工工艺。该工艺可用于生产明确定义的表面纳米和微尺度表面纹理,如激光诱导周期性表面结构(LIPSS),可以提高表面的防污能力。在本研究中,使用超快(< 370 fs)和低功率(< 4 W)激光系统,在生物相容性级316L不锈钢衬底上制造微纳米级LIPSS结构。为了优化防污性能,改变激光工艺参数,如脉冲能量、脉冲重复频率和光束扫描速度,在不同尺寸的不锈钢表面产生微结构。用激光表面轮廓仪分析了表面粗糙度,用水接触角测量法检测了疏水性的变化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Ultrafast Laser-Induced Surface Structuring of Anti-Fouling Steel Surfaces for Biomedical Applications
Metallic surfaces are increasingly used in medical applications due to their favorable material properties such as high strength and biocompatibility. In medical applications anti-fouling properties are an important requirement especially for implants and medical devices which come into contact with different types of fluid streams. These should be anti-fouling in order to prevent contamination and corrosion. Laser processing methods such as ultrafast laser processing is a one-step and scalable process for surface texturing. This process can be used to produce well-defined surface nano- and microscale superficial textures such as Laser-induced Periodic Surface Structures (LIPSS) which can enhance the anti-fouling capability of the surface. In this study, micro and nano scaled LIPSS structures are manufactured on a biocompatible grade stainless steel 316L substrate using an ultrafast (< 370 fs) and low power (< 4 W) laser system. With an aim to optimize the anti-fouling properties, laser process parameters such as pulse energy, pulse repetition rate and beam scanning speed were varied to produce microstructures on the stainless-steel surface of varying dimensions. Surface roughness was analyzed using a laser surface profilometer and changes in the hydrophobicity were examined using water contact angle goniometry.
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来源期刊
Journal of Micro and Nano-Manufacturing
Journal of Micro and Nano-Manufacturing ENGINEERING, MANUFACTURING-
CiteScore
2.70
自引率
0.00%
发文量
12
期刊介绍: The Journal of Micro and Nano-Manufacturing provides a forum for the rapid dissemination of original theoretical and applied research in the areas of micro- and nano-manufacturing that are related to process innovation, accuracy, and precision, throughput enhancement, material utilization, compact equipment development, environmental and life-cycle analysis, and predictive modeling of manufacturing processes with feature sizes less than one hundred micrometers. Papers addressing special needs in emerging areas, such as biomedical devices, drug manufacturing, water and energy, are also encouraged. Areas of interest including, but not limited to: Unit micro- and nano-manufacturing processes; Hybrid manufacturing processes combining bottom-up and top-down processes; Hybrid manufacturing processes utilizing various energy sources (optical, mechanical, electrical, solar, etc.) to achieve multi-scale features and resolution; High-throughput micro- and nano-manufacturing processes; Equipment development; Predictive modeling and simulation of materials and/or systems enabling point-of-need or scaled-up micro- and nano-manufacturing; Metrology at the micro- and nano-scales over large areas; Sensors and sensor integration; Design algorithms for multi-scale manufacturing; Life cycle analysis; Logistics and material handling related to micro- and nano-manufacturing.
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