Pseudo-piezoelectricity in calcium titanate – towards novel implant materials

Riaz, Abdullah; Witte, Kerstin; Bodnar, Wiktor; Burkel, E.

doi:10.1016/j.scriptamat.2020.07.043

Cited by 10 publications

(3 citation statements)

References 35 publications

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“…It is noticeable that the main peak position of pure CaTiO 3 at 90° azimuthal sector is shifted from 0° azimuthal sector. This peak shift is due to the lattice distortions influenced by SPS [ 22 ]. Furthermore, the peak position in Mg and Fe doped samples are shifted even more compared to pure CaTiO 3 indicating further lattice distortions as a result of doping elements.…”

Section: Resultsmentioning

confidence: 99%

Tunable Pseudo-Piezoelectric Effect in Doped Calcium Titanate for Bone Tissue Engineering

et al. 2021

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CaTiO3 is a promising candidate as a pseudo-piezoelectric scaffold material for bone implantation. In this study, pure and magnesium/iron doped CaTiO3 are synthesized by sol-gel method and spark plasma sintering. Energy dispersive X-ray mapping confirm the homogenous distribution of doping elements in sintered samples. High-energy X-ray diffraction investigations reveal that doping of nanostructured CaTiO3 increased the strain and defects in the structure of CaTiO3 compared to the pure one. This led to a stronger pseudo-piezoelectric effect in the doped samples. The charge produced in magnesium doped CaTiO3 due to the direct piezoelectric effect is (2.9 ± 0.1) pC which was larger than the one produced in pure CaTiO3 (2.1 ± 0.3) pC, whereas the maximum charge was generated by iron doped CaTiO3 with (3.6 ± 0.2) pC. Therefore, the pseudo-piezoelectric behavior can be tuned by doping. This tuning of pseudo-piezoelectric response provides the possibility to systematically study the bone response using different piezoelectric strengths and possibly adjust for bone tissue engineering.

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Section: Resultsmentioning

confidence: 99%

Tunable Pseudo-Piezoelectric Effect in Doped Calcium Titanate for Bone Tissue Engineering

et al. 2021

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“…Other techniques that can be used to reduce sintering temperature and time include microwave sintering (MVS), 22 flash sintering (FS), 23 and field‐assisted sintering (FAST) 24 . They utilize various mechanisms such as rapid heating, localized heating, and applications of electric fields or plasma to promote densification of the ceramics at lower temperatures and shorter times, and have been shown to be effective for sintering a variety of ceramic materials, including perovskite‐based piezoelectric and ferroelectric ceramics 25,26 . These methods can offer advantages over traditional LPS in terms of densification and mechanical strength, but they require more advanced and expensive equipment.…”

Section: Introductionmentioning

confidence: 99%

Cold sintering of perovskite‐based mixed conducting membrane for oxygen separation

Zhou,

Fan,

Jiang

et al. 2024

AIChE Journal

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Cold sintering has attracted significant attention as its remarkably rapid densification process at low sintering temperatures leads to considerable energy savings. However, the sintering behaviors of cold‐sintered perovskite ceramics remain poorly understood and lack precise control over material microstructure. Here, we fabricated dense SrCo0.8Fe0.2O3−δ (SCF) ceramic oxygen permeation membranes by cold sintering. Adding an appropriate ratio of sub‐micron SCF particles can better bridge the sintering interspaces between micron particles, generate amorphous phase through “dissolution‐precipitation,” and aid in the initial densification. The average relative density of SCF membranes undergoes a significant increase to 95.9% after cold sintering and post‐annealing at 900°C, which is much lower than the temperature required for conventional high‐temperature solid‐state sintering (>1200°C). The oxygen permeation flux of the prepared SCF perovskite membrane reaches 2.8 mL min−1 cm−2, which proves that this method has the potential to be an excellent sintering technique for dense perovskite ceramic membranes.

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“…Common medical implant materials include metals, 24 ceramics, 25 and polymers 26 . Metals and ceramics have the advantages of excellent corrosion resistance and mechanical properties, 27 but they also suffer from the obviously mechanical disparities between host organs and implant materials 28 .…”

Section: Introductionmentioning

confidence: 99%

Construction of antifouling and antibacterial polyhexamethylguanidine/chondroitin sulfate coating on polyurethane surface based on polydopamine rapid deposition

Zhu

Yuan

Zhang

et al. 2022

J of Applied Polymer Sci

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Implanted medical devices are widely used in clinic for disease treatment, but they generally suffer from the bio‐fouling problem which leads to the reduction of service life and loss of therapeutic effects. Herein, an eco‐friendly method based on polydopamine (PDA) fast deposition is developed to construct anti‐fouling and antibacterial surface on polyurethane (PU). The self‐adhesive layer of PDA contributes to the formation of a platform with active sites for further antibacterial and hydrophilic modification. Polyhexamethylguanidine (PHMG) as antibacterial ingredient and chondroitin sulfate (CS) as hydrophilic component covalently bind on PDA platform, which successively helps to form PU‐PDA/PHMG/CS. The resultant surface demonstrates the excellent property of anti‐protein adsorption (96.8%), anti‐bacterial ability (99.9%), and cell compatibility (95.0%), which would have great potential for medical application.

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Pseudo-piezoelectricity in calcium titanate – towards novel implant materials

Cited by 10 publications

References 35 publications

Tunable Pseudo-Piezoelectric Effect in Doped Calcium Titanate for Bone Tissue Engineering

Tunable Pseudo-Piezoelectric Effect in Doped Calcium Titanate for Bone Tissue Engineering

Cold sintering of perovskite‐based mixed conducting membrane for oxygen separation

Construction of antifouling and antibacterial polyhexamethylguanidine/chondroitin sulfate coating on polyurethane surface based on polydopamine rapid deposition

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