Si–N–O Films Synthesized by Plasma Immersion Ion Implantation and Deposition (PIII&amp;D) for Blood-Contacting Biomedical Applications

The size of the band gap and the energy position of the band edges make several oxynitride semiconductors promising candidates for efficient hydrogen and oxygen production under solar light illumination. Intense research efforts dedicated to oxynitride materials have unveiled the majority of their most important properties. However, two crucial aspects have received much less attention: One is the critical issue of compositional/structural surface modifications that occur during operation and how these affect photoelectrochemical performance. The second concerns the relation between electrochemical response and the crystallographic surface orientation of the oxynitride semiconductor. These are indeed topics of fundamental importance, since it is exactly at the surface where the visible-light-driven electrochemical reaction takes place. In contrast to conventional powder samples, thin films represent the best model system for these investigations. This study reviews current state-of-theart oxynitride thin film fabrication and characterization, before focusing on LaTiO 2 N, selected as a representative photocatalyst. An investigation of the initial physicochemical evolution of the surface is reported. Then, it is shown that after stabilization the absorbed photon-to-current conversion efficiency of epitaxial thin films can differ by about 50% for different crystallographic surface orientations, and be up to 5 times larger than for polycrystalline samples.

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“…In addition, some oxynitrides have also been investigated as magnetic and dielectric materials, as well as biomedical coatings and pigments …”

Section: Introductionmentioning

confidence: 99%

LaTiO_xN_y Thin Film Model Systems for Photocatalytic Water Splitting: Physicochemical Evolution of the Solid–Liquid Interface and the Role of the Crystallographic Orientation

Pichler

Haydous

et al. 2017

Adv Funct Materials

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“…PIII is convenient for carrying out ion bombardment modifications of objects of complex geometry such as a microtiter plate since the plasma sheath can be made to conform to the shape of the object and can be used in conjunction with masking methods to enable patterning for microarrays. Since the original development of the PIII method by Conrad et al6 for treating metals, it has been applied to biological problems for modifying the properties of blood‐contacting surfaces 7, 8…”

Section: Introductionmentioning

confidence: 99%

Plasma immersion ion implantation treatment of polyethylene for enhanced binding of active horseradish peroxidase

Gan

Nosworthy

McKenzie

et al. 2007

J Biomedical Materials Res

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Robust attachment of active proteins to synthetic surfaces underpins the development of biosensors and protein arrays. This paper presents the results of experiments in which energetic ions, extracted from an inductively coupled nitrogen plasma, are used to modify the surface of ultrahigh molecular weight polyethylene (UHMWPE). The ability of the surface to bind active horseradish peroxidase (HRP) is significantly enhanced by the plasma treatment. The amide signal in infrared spectroscopy indicates an increased quantity of surface-attached protein on the modified surface. The activity of the bound HRP remains high compared with that of protein attached to the untreated surface, after repeated washing in buffer solution. Although Tween 20 was an effective blocking agent for the unmodified polyethylene surface, binding of HRP to the modified surface is not inhibited by its presence. We propose that the treatment produces new binding sites on the surface and that the function of the HRP is retained because the treated surface is substantially more hydrophilic.

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“…There are also applications for biocompatible metals such as austenitic stainless steel, tantalum, niobium, cobalt chrome nickel alloys, titanium and titanium alloys [80,103,104]. Tian et al used oxygen PBII to increase bioactivity, wear resistance, and corrosion resistance of titanium alloy (Ti-6Al-4V) [102].…”

Section: Plasma-based Ion Implantation and Depositionmentioning

confidence: 99%

“…Tian et al used oxygen PBII to increase bioactivity, wear resistance, and corrosion resistance of titanium alloy (Ti-6Al-4V) [102]. Wan et al used PBIID to fabricate silicon-oxynitride (Si-N-O) film on silicon wafers to increase blood compatibility [103].…”

Section: Plasma-based Ion Implantation and Depositionmentioning

confidence: 99%

Industrial Applications of Pulsed Power Technology

Akiyama

Sakugawa

Namihira

et al. 2007

IEEE Trans. Dielect. Electr. Insul.

310

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A review of mainly the past two years is undertaken of the industrial applications of pulsed power. Repetitively operated pulsed power generators with a moderate peak power have been developed for industrial applications. These generators are reliable and have low maintenance. Development of the pulsed power generators helps promote industrial applications of pulsed power for such things as food processing, medical treatment, water treatment, exhaust gas treatment, ozone generation, engine ignition, ion implantation and others. Here, industrial applications of pulsed power are classified by application for biological effects, for pulsed streamer discharges in gases, for pulsed discharges in liquid or liquidmixture, and for material processing.Index Terms -Pulsed power, industrial application, bioelectrics, exhaust gas treatment, discharge in liquid, material processing.

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Si–N–O Films Synthesized by Plasma Immersion Ion Implantation and Deposition (PIII&D) for Blood-Contacting Biomedical Applications

Cited by 12 publications

References 30 publications

LaTiO_xN_y Thin Film Model Systems for Photocatalytic Water Splitting: Physicochemical Evolution of the Solid–Liquid Interface and the Role of the Crystallographic Orientation

LaTiO_xN_y Thin Film Model Systems for Photocatalytic Water Splitting: Physicochemical Evolution of the Solid–Liquid Interface and the Role of the Crystallographic Orientation

Plasma immersion ion implantation treatment of polyethylene for enhanced binding of active horseradish peroxidase

Industrial Applications of Pulsed Power Technology

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Si–N–O Films Synthesized by Plasma Immersion Ion Implantation and Deposition (PIII&D) for Blood-Contacting Biomedical Applications

Cited by 12 publications

References 30 publications

LaTiOxNy Thin Film Model Systems for Photocatalytic Water Splitting: Physicochemical Evolution of the Solid–Liquid Interface and the Role of the Crystallographic Orientation

LaTiOxNy Thin Film Model Systems for Photocatalytic Water Splitting: Physicochemical Evolution of the Solid–Liquid Interface and the Role of the Crystallographic Orientation

Plasma immersion ion implantation treatment of polyethylene for enhanced binding of active horseradish peroxidase

Industrial Applications of Pulsed Power Technology

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Product

Resources

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LaTiO_xN_y Thin Film Model Systems for Photocatalytic Water Splitting: Physicochemical Evolution of the Solid–Liquid Interface and the Role of the Crystallographic Orientation

LaTiO_xN_y Thin Film Model Systems for Photocatalytic Water Splitting: Physicochemical Evolution of the Solid–Liquid Interface and the Role of the Crystallographic Orientation