Surface characterization and thermomechanical behavior of nanostructured-gold layer for biomedical applications

Wu, Chien‐Ming; Lu, Yi Jung; Chen, Shyuan Yow; Wen, Shih Cheng; Wu, Chia‐Hung; Liao, Pei Bang; Ou, Keng Liang; Chou, Hsin Hua

doi:10.1016/j.jallcom.2018.12.255

Cited by 2 publications

(2 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Металлические покрытия Одним из первых подходов к решению проблемы налипания тканей во время операции стало снижение влияния перегрева рабочей части инструмента за счет нанесения на его поверхность металлических покрытий, обладающих более высокой теплопроводностью по сравнению с нержавеющей сталью. Так для повышения антипригарных свойств использовали серебро [13,14], никель [15], золото [16,17]. Однако использование никеля в качестве покрытия вызывает вопросы ввиду его высокой аллергенности [18], а применение благородных металлов (золота и серебра) является нецелесообразным из-за их дороговизны.…”

Section: нанесение функциональных покрытийunclassified

Physico-Chemical Approaches to Improve the Characteristics of Electrosurgical Instruments

2022

Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol.

View full text Add to dashboard Cite

This article is devoted to an overview of approaches to improving the characteristics of electrosurgical instruments. Currently, in minimally invasive surgery, the main material of an electrosurgical instrument is usually stainless steel. However, during operation, tissue sticking and carbonization occur, as well as corrosion of the instrument, which leads to a decrease in efficiency and adverse events. In this regard, it is very promising to develop new physicochemical approaches to improve the characteristics of electrosurgical instruments in order to avoid disadvantages noted above. On the one hand, it is proposed to replace stainless steel with other electrically conductive materials (gold, tungsten, zirconium dioxide, etc.). On the other hand, options for developing functional coatings of stainless steel (metallic, polymeric and composite) are considered. Among the "classical" approaches, one can distinguish coatings with gold, as well as nitrides and oxides of refractory metals (Cr, Zr, Ti), which are characterized by higher thermal conductivity and a pronounced anti-sticking effect. Very promising is the use of coatings based on diamond-like carbon, which have a higher contact angle compared to stainless steel (97.25±1.87° versus 75.47±2.55°) with a higher microhardness of the coating (2250 Hv versus 500 Hv). Particular attention is drawn to superhydrophobic coatings, for example, a coating based on hexamethyldisilazane with SiO2 nanoparticles, the contact angle of which is two times higher than stainless steel (153.4±2.6° versus 73.1±0.6°). An alternative to coatings is the formation of microchannels and nanoroughness on the surface of electrosurgical instruments in order to reduce tissue adhesion and the risk of carbonization. Implementation of the principles of biomimicry, i.e. imitation of the structures of wildlife, has led to research in the field of creating analogues of microstructures (pangolin scales, shark skin), as well as liquid-infused surfaces, imitating the properties of the leaves of the carnivorous Nepenthes pitcher plant, which, due to the lubricant layer on their surface, have lower adhesive properties compared to unmodified material. Thus, the problem of modifying the surface of electrosurgical instruments has already been approached from several angles, and it can be stated with a sufficient degree of confidence that the number of studies in this direction will only increase.

show abstract

Section: нанесение функциональных покрытийunclassified

Physico-Chemical Approaches to Improve the Characteristics of Electrosurgical Instruments

2022

Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol.

View full text Add to dashboard Cite

show abstract

“…[4,[8][9][10][11]. To improve these disadvantages of BSSs and then enhance their surface properties and biocompatibility, various surface modification approaches were employed to alter the surface performances of BSSs [12][13][14][15][16]. Tonino et al [17] have indicated that the formation of a porous oxide layer on the surface of the 316L BSS implants can be utilized in the morphological fixation of the implants to bone through bony ingrowth into the porous microstructure.…”

Section: Introductionmentioning

confidence: 99%

Surface Characteristics and Cell Adhesion Behaviors of the Anodized Biomedical Stainless Steel

Hsu

Huang

et al. 2020

Applied Sciences

Self Cite

View full text Add to dashboard Cite

In this study, an electrochemical anodizing method was applied as surface modification of the 316L biomedical stainless steel (BSS). The surface properties, microstructural characteristics, and biocompatibility responses of the anodized 316L BSS specimens were elucidated through scanning electron microscopy, X-ray photoelectron spectroscopy, X-ray diffractometry, transmission electron microscopy, and in vitro cell culture assay. Analytical results revealed that the oxide layer of dichromium trioxide (Cr2O3) was formed on the modified 316L BSS specimens after the different anodization modifications. Moreover, a dual porous (micro/nanoporous) topography can also be discovered on the surface of the modified 316L BSS specimens. The microstructure of the anodized oxide layer was composed of amorphous austenite phase and nano-Cr2O3. Furthermore, in vitro cell culture assay also demonstrated that the osteoblast-like cells (MG-63) on the anodized 316L BSS specimens were completely adhered and covered as compared with the unmodified 316L BSS specimen. As a result, the anodized 316L BSS with a dual porous (micro/nanoporous) oxide layer has great potential to induce cell adhesion and promote bone formation.

show abstract

Surface characterization and thermomechanical behavior of nanostructured-gold layer for biomedical applications

Cited by 2 publications

References 35 publications

Physico-Chemical Approaches to Improve the Characteristics of Electrosurgical Instruments

Physico-Chemical Approaches to Improve the Characteristics of Electrosurgical Instruments

Surface Characteristics and Cell Adhesion Behaviors of the Anodized Biomedical Stainless Steel

Contact Info

Product

Resources

About