Hierarchical structures on nickel-titanium fabricated by ultrasonic nanocrystal surface modification

Hou, Xiaoning; Mankoci, Steven; Walters, Nicholas; Gao, Hongyu; Zhang, Ruixia; Li, Shengxi; Qin, Haifeng; Ren, Zhencheng; Doll, Gary L.; Cong, Hongbo; Martini, Ashlie; Vasudevan, Vijay K.; Zhou, Xianfeng; Sahai, Nita; Dong, Yalin; Ye, Chang

doi:10.1016/j.msec.2018.07.032

Cited by 20 publications

(6 citation statements)

References 68 publications

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“…Surfaces can be modified using different techniques, including photolithography [7], soft lithography [8][9][10][11], dippen nanolithography [12], ultrasonic nanocrystal surface modification (UNSM) [13], colloid lithography, vapor annealing [14], or laser beam irradiation [15], among others.…”

Section: Introductionmentioning

confidence: 99%

Surface Modification by Combination of Dip-Pen Nanolithography and Soft Lithography for Reduction of Bacterial Adhesion

Arango-Santander

Peláez-Vargas

Freitas

et al. 2018

Journal of Nanotechnology

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Dip-pen nanolithography (DPN) and soft lithography are techniques suitable to modify the surface of biomaterials. Modified surfaces might play a role in modulating cells and reducing bacterial adhesion and biofilm formation. The main objective of this study was threefold: first, to create patterns at microscale on model surfaces using DPN; second, to duplicate and transfer these patterns to a real biomaterial surface using a microstamping technique; and finally, to assess bacterial adhesion to these developed patterned surfaces using the cariogenic species Streptococcus mutans. DPN was used with a polymeric adhesive to create dot patterns on model surfaces. Elastomeric polydimethylsiloxane was used to duplicate the patterns and silica sol to transfer them to the medical grade stainless steel 316L surface by microstamping. Optical microscopy and atomic force microscopy (AFM) were used to characterize the patterns. S. mutans adhesion was assessed by colony-forming units (CFUs), MTT viability assay, and scanning electron microscopy (SEM). DPN allowed creating microarrays from 1 to 5 µm in diameter on model surfaces that were successfully transferred to the stainless steel 316L surface via microstamping. A significant reduction up to one order of magnitude in bacterial adhesion to micropatterned surfaces was observed. The presented experimental approach may be used to create patterns at microscale on a surface and transfer them to other surfaces of interest. A reduction in bacterial adhesion to patterned surfaces might have a major impact since adhesion is a key step in biofilm formation and development of biomaterial-related infections.

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Section: Introductionmentioning

confidence: 99%

Surface Modification by Combination of Dip-Pen Nanolithography and Soft Lithography for Reduction of Bacterial Adhesion

Arango-Santander

Peláez-Vargas

Freitas

et al. 2018

Journal of Nanotechnology

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“…As a result, UNSM contributes to improving the resistance of these materials to wear and fatigue. In recent years, UNSM has been widely used to improve the surface hardness (Ref 98 , 99 ), wear resistance (Ref 100 - 102 ), and fatigue performance (Ref 97 , 98 , 103 , 104 ) of metallic materials.…”

Section: Post-processing Methods For Am Metalsmentioning

confidence: 99%

Effects of Post-processing on the Surface Finish, Porosity, Residual Stresses, and Fatigue Performance of Additive Manufactured Metals: A Review

Zhang

Zhao

et al. 2021

J. of Materi Eng and Perform

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108

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Additive manufacturing (AM) has attracted much attention due to its capability in building parts with complex geometries. Unfortunately, AM metals suffer from three major drawbacks, including high porosity, poor surface finish, and tensile residual stresses, all of which will significantly compromise the fatigue performance. These drawbacks present a major obstacle to the application of AM metals in industries that produce fatigue-sensitive components. Many post-processing methods, including heat treatment, hot isotropic pressing, laser shock peening, ultrasonic nanocrystal surface modification, advanced finishing and machining, and laser polishing, have been used to treat AM metals to decrease their porosity, improve the surface finish, and eliminate tensile residual stresses. As a result, significant improvement in fatigue performance has been observed. In this paper, the state of the art in utilizing post-processing techniques to treat AM metals and the effects of these treatments on the porosity, surface finish, and residual stresses of metal components and their resultant fatigue performance are reviewed.

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“…UNSM is also widely used for biomedical device treatments. Hou et al [ 131 ] fabricated a hierarchical surface structure on Ti–Ni alloys via UNSM to improve corrosion resistance and hardness. Ye et al [ 132 ] applied UNSM to prepare Ni–Ti alloys with an amorphous surface layer.…”

Section: Physical Surface Modification Of Biomedical Alloysmentioning

confidence: 99%

Biomedical Alloys and Physical Surface Modifications: A Mini-Review

Yan

Cao

2021

Materials

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Biomedical alloys are essential parts of modern biomedical applications. However, they cannot satisfy the increasing requirements for large-scale production owing to the degradation of metals. Physical surface modification could be an effective way to enhance their biofunctionality. The main goal of this review is to emphasize the importance of the physical surface modification of biomedical alloys. In this review, we compare the properties of several common biomedical alloys, including stainless steel, Co–Cr, and Ti alloys. Then, we introduce the principle and applications of some popular physical surface modifications, such as thermal spraying, glow discharge plasma, ion implantation, ultrasonic nanocrystal surface modification, and physical vapor deposition. The importance of physical surface modifications in improving the biofunctionality of biomedical alloys is revealed. Future studies could focus on the development of novel coating materials and the integration of various approaches.

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Hierarchical structures on nickel-titanium fabricated by ultrasonic nanocrystal surface modification

Cited by 20 publications

References 68 publications

Surface Modification by Combination of Dip-Pen Nanolithography and Soft Lithography for Reduction of Bacterial Adhesion

Surface Modification by Combination of Dip-Pen Nanolithography and Soft Lithography for Reduction of Bacterial Adhesion

Effects of Post-processing on the Surface Finish, Porosity, Residual Stresses, and Fatigue Performance of Additive Manufactured Metals: A Review

Biomedical Alloys and Physical Surface Modifications: A Mini-Review

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