Spin Coating and Micro-Patterning Optimization of Composite Thin Films Based on PVDF

Nguyễn, Anh Ngọc; Solard, Jeanne; Nong, H. T. T.; Osman, Chirine Ben; Gómez, Andrés; Bockelée, Valérie; Tencé‐Girault, Sylvie; Schoenstein, Frédéric; Simón-Sorbed, Maite; Carrillo, A.E.; Mercone, Silvana

doi:10.3390/ma13061342

Cited by 25 publications

(24 citation statements)

References 52 publications

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“…After being negatively charged, the samples were subjected to spin coating to immobilize OniL on the surface of Neg-TiO2NTs. The spin coating is a useful technique to fast and easily create a homogenous film with desired and well-controlled thickness [38]. As observed for the bare TiO2NTs the SEM analysis showed that the deposition of OniL on the surface of these nanotubes did not alter its morphology.…”

Section: Resultsmentioning

confidence: 91%

The Deposition of a Lectin from <em>Oreochromis niloticus</em> on the Surface of Titanium Dioxide Nanotubes Improve the Cell Adhesion, Proliferation, and Osteogenic Activity of Osteoblast-like Cells

Anjos¹,

Silva²,

Souza³

et al. 2021

Preprint

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Titanium and its alloys are used biomaterials for medical and dental applications, due to their mechanical and physical properties. The surface modifications of titanium with bioactive molecules can increase the osseointegration by improving the interface between the bone and implant. Titanium dioxide nanotubes (TiO2NTs) have excellent bioactivity inducing cell adhesion, spreading, growth and differentiation. In this work, TiO2NTs were functionalized with a lectin from the plasma of the fish Oreochromis niloticus aiming to favour the adhesion and proliferation of osteoblast-like cells, improving its biocompatibility. The TiO2NTs were obtained by anodization of titanium and annealed at 400 °C for 3 h. The resulting TiO2NTs were characterized by high-resolution scanning electron microscopy. The successfully incorporation of OniL on the surface of TiO2NTs by spin coating was demonstrated by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIE) and attenuated total reflection-Fourier transform infrared spectrum (ATR-FTIR). Our results showed that TiO2-NTs were successfully synthesized in a regular and well-distributed way. The functionalization of TiO2-NTs with OniL favoured adhesion, proliferation, and the osteogenic activity of osteoblast-like cells, suggesting its use to improve the quality and biocompatibility of titanium-based biomaterials.

show abstract

Section: Resultsmentioning

confidence: 91%

The Deposition of a Lectin from <em>Oreochromis niloticus</em> on the Surface of Titanium Dioxide Nanotubes Improve the Cell Adhesion, Proliferation, and Osteogenic Activity of Osteoblast-like Cells

Anjos¹,

Silva²,

Souza³

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…After being negatively charged, the samples were subjected to spin coating to immobilize OniL on the surface of Neg-TiO 2 NTs. The spin coating is a useful technique to fast and easily create a homogenous film with desired and well-controlled thickness [ 43 ]. As observed for the bare TiO 2 NTs the SEM analysis showed that the deposition of OniL on the surface of these nanotubes did not alter its morphology ( Figure 1 b).…”

Section: Resultsmentioning

confidence: 99%

The Deposition of a Lectin from Oreochromis niloticus on the Surface of Titanium Dioxide Nanotubes Improved the Cell Adhesion, Proliferation, and Osteogenic Activity of Osteoblast-like Cells

et al. 2021

View full text Add to dashboard Cite

Titanium and its alloys are used as biomaterials for medical and dental applications, due to their mechanical and physical properties. Surface modifications of titanium with bioactive molecules can increase the osseointegration by improving the interface between the bone and implant. In this work, titanium dioxide nanotubes (TiO2NTs) were functionalized with a lectin from the plasma of the fish Oreochromis niloticus aiming to favor the adhesion and proliferation of osteoblast-like cells, improving its biocompatibility. The TiO2NTs were obtained by anodization of titanium and annealed at 400 °C for 3 h. The resulting TiO2NTs were characterized by high-resolution scanning electron microscopy. The successful incorporation of OniL on the surface of TiO2NTs, by spin coating, was demonstrated by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIE), and attenuated total reflection-Fourier transform infrared spectrum (ATR-FTIR). Our results showed that TiO2NTs were successfully synthesized in a regular and well-distributed way. The modification of TiO2NTs with OniL favored adhesion, proliferation, and the osteogenic activity of osteoblast-like cells, suggesting its use to improve the quality and biocompatibility of titanium-based biomaterials.

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“…The silicon substrates were pretreated before the film deposition in order to remove all contaminants using a standard clean room procedure. All details for the thin films' elaboration can be found in our previous work [42] and are summarized briefly in Figure 1.…”

Section: Methodsmentioning

confidence: 99%

Robust Piezoelectric Coefficient Recovery by Nano-Inclusions Dispersion in Un-Poled PVDF–Ni0.5Zn0.5Fe2O4 Ultra-Thin Films

et al. 2022

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This work aimed to study the influence of the hybrid interface in polyvinylidene fluoride (PVDF)-based composite thin films on the local piezoelectric response. Our results provide evidence of a surprising contradiction: the optimization process of the β-phase content using nano-inclusions did not correspond to the expected nanoscale piezoelectric optimization. A large piezoelectric loss was observed at the nanoscale level, which contrasts with the macroscopic polarization measurement observations. Our main goal was to show that the dispersion of metallic ferromagnetic nano-inclusions inside the PVDF films allows for the partial recovery of the local piezoelectric properties. From a dielectric point of view, it is not trivial to expect that keeping the same amount of the metallic volume inside the dielectric PVDF matrix would bring a better piezoelectric response by simply dispersing this phase. On the local resonance measured by PFM, this should be the worst due to the homogeneous distribution of the nano-inclusions. Both neat PVDF films and hybrid ones (0.5% in wt of nanoparticles included into the polymer matrix) showed, as-deposited (un-poled), a similar β-phase content. Although the piezoelectric coefficient in the case of the hybrid films was one order of magnitude lower than that for the neat PVDF films, the robustness of the polarized areas was reported 24 h after the polarization process and after several images scanning. We thus succeeded in demonstrating that un-poled polymer thin films can show the same piezoelectric coefficient as the poled one (i.e., 10 pm/V). In addition, low electric field switching (50 MV/m) was used here compared to the typical values reported in the literature (100–150 MV/m).

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Spin Coating and Micro-Patterning Optimization of Composite Thin Films Based on PVDF

Cited by 25 publications

References 52 publications

The Deposition of a Lectin from <em>Oreochromis niloticus</em> on the Surface of Titanium Dioxide Nanotubes Improve the Cell Adhesion, Proliferation, and Osteogenic Activity of Osteoblast-like Cells

The Deposition of a Lectin from <em>Oreochromis niloticus</em> on the Surface of Titanium Dioxide Nanotubes Improve the Cell Adhesion, Proliferation, and Osteogenic Activity of Osteoblast-like Cells

The Deposition of a Lectin from Oreochromis niloticus on the Surface of Titanium Dioxide Nanotubes Improved the Cell Adhesion, Proliferation, and Osteogenic Activity of Osteoblast-like Cells

Robust Piezoelectric Coefficient Recovery by Nano-Inclusions Dispersion in Un-Poled PVDF–Ni0.5Zn0.5Fe2O4 Ultra-Thin Films

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