3D Printing of Flexible Composites via Magnetophoresis: Toward Medical Application Based on Low‐Frequency Induction Heating Effect

Xiang, Ziyin; Nguyen, Van-Cuong; Ducharne, Benjamin; Schiava, Nellie Della; Capsal, Jean‐Fabien; Cottinet, Pierre‐Jean; Le, Minh‐Quyen

doi:10.1002/mame.202100211

Cited by 10 publications

(9 citation statements)

References 34 publications

(42 reference statements)

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“…Concerning the versatility of the process, the production of the film could be also easily integrated with techniques such as 3D printing, which make it extremely adaptable even to complex structures. [32] With the aim of identifying the best-performing combination of electric field frequency and amplitude, a study of the dielectrophoresis process was conducted via in-process microscopic imaging. Subsequently, the composites were developed in two different configurations, 1À3 and 0À3, at different volume contents (2.4%, 12%, 24%).…”

Section: Fluoride-trifluoroethylene)mentioning

confidence: 99%

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Structuring BaTiO₃ /PDMS Nanocomposite via Dielectrophoresis for Fractional Flow Reserve Measurement

et al. 2021

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This work focuses on the development of piezoelectric sensors for the fractional flow reserve (FFR) technique, a procedure based on the measurement of blood pressure within a vessel to evaluate the severity of coronary stenosis. Considering the medical application, biocompatibility is a mandatory requirement that justifies the selection of fillers and matrix. Two composites made of lead‐free barium titanate nanoparticles (BaTiO3) incorporated in polydimethylsiloxane (PDMS) elastomer are developed: the first composite with particles randomly dispersed and the second one with particles aligned along one direction, via an innovative technique known as dielectrophoresis. The experimental characterization indicates that the electroactive and dielectric properties are coherent with the models’ prediction, confirming that the alignment of the filler gives rise to considerably enhanced dielectric and piezoelectric proprieties relative to the random dispersion. Thermal stability together with X‐ray diffraction is conducted, demonstrating superior piezoelectric response of the structured sample under high‐temperature conditions. FFR application is then simulated by applying an arterial pulse‐shape stimulus on the developed sensor, which is finally integrated into a catheter and directly inserted in a simulation arm.

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Section: Fluoride-trifluoroethylene)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Structuring BaTiO₃ /PDMS Nanocomposite via Dielectrophoresis for Fractional Flow Reserve Measurement

et al. 2021

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“…In this situation, the printing technique becomes a viable option for achieving the deposition of multiple-layered materials in additive manufacturing (AM) that are of various sizes and shapes [ 27 ]. In particular, among the various methods currently in use [ 28 , 29 , 30 , 31 , 32 ], screen printing appears to be a quick, effective, straightforward, durable, and inexpensive process that may be used on an industrial scale [ 33 , 34 , 35 ]. By using screen printing, the polymer-based piezoelectric composite is directly screen printed onto the surface of the host structure, which is assimilated to the steel outer ring of the bearing.…”

Section: Introductionmentioning

confidence: 99%

Design Rules of Bidirectional Smart Sensor Coating for Condition Monitoring of Bearings

Nguyen

Bernadet

et al. 2023

Polymers

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This paper reports a novel monitoring technique of bearings’ bidirectional load (axial and radial) based on a smart sensor coating, which is screen printed onto the surface of a cross-shaped steel substrate. To ensure the accuracy and stability of measurement as well as the durability of the printed coating, the developed prototype is built according to design rules commonly used in electronic circuits. The finite element model (FEM) is used to predict the mechanical property of the tested substrate under either unidirectional or bidirectional loads. Regarding the output voltage of the piezoelectric sensor, experimental results are revealed to be well-corelated to the numerical simulation. It is pointed out that the output signal generated from the sensor (electrode) could be particularly affected due to the capacitive parasite coming from the conductive tracks (CTs). Such a phenomenon might be reduced by printing them on the dielectric layer rather than on the piezocomposite layer. The study also investigates a highly anisotropic shape of electrodes (rectangular instead of circle), indicating that the orientation of such electrodes (axial or radial) does affect the output measurement. To sum up, the high performance of a sensor network coating depends not only on the ultimate characteristics of its own materials, but also on its structural design. Such an issue has been rarely reported on in the literature, but is nonetheless crucial to achieving reliable condition monitoring of bearings, especially for multidirectional loads—a key signature of early failure detection.

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“…Liu et al proposed a novel parallel-plate capacitive-force-sensor device based on an electrostrictive terpolymer through drop-on-demand (DoD) inkjet printing technology [ 20 ]. Lately in the work of Xiang et al dedicated to endovascular ablation for varicose vein treatment, an innovative induction-heating device was successfully extruded through a customized ferroelectric composite [ 21 ]. During the printing stage, the magnetic particles were perfectly aligned within the polymer matrix along the input field direction, leading to substantial enhancement in the heating effect.…”

Section: Introductionmentioning

confidence: 99%

Extrusion-Based 3D Printing of Stretchable Electronic Coating for Condition Monitoring of Suction Cups

Nguyen

Mogniotte

et al. 2022

Micromachines

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Suction cups (SCs) are used extensively by the industrial sector, particularly for a wide variety of automated material-handling applications. To enhance productivity and reduce maintenance costs, an online supervision system is essential to check the status of SCs. This paper thus proposes an innovative method for condition monitoring of SCs coated with printed electronics whose electrical resistance is supposed to be correlated with the mechanical strain. A simulation model is first examined to observe the deformation of SCs under vacuum compression, which is needed for the development of sensor coating thanks to the 3D printing process. The proposed design involves three circle-shaped sensors, two for the top and bottom bellows (whose mechanical strains are revealed to be the most significant), and one for the lip (small strain, but important stress that might provoke wear and tear in the long term). For the sake of simplicity, practical measurement is performed on 2D samples coated with two different conductive inks subjected to unidirectional tensile loading. Graphical representations together with analytical models of both linear and nonlinear piezoresistive responses allows for the characterization of the inks’ behavior under several conditions of displacement and speed inputs. After a comparison of the two inks, the most appropriate is selected as a consequence of its excellent adhesion and stretchability, which are essential criteria to meet the target field. Room temperature extrusion-based 3D printing is then investigated using a motorized 3D Hyrel printer with a syringe-extrusion modular system. Design optimization is finally carried out to enhance the surface detection of sensitive elements while minimizing the effect of electrodes. Although several issues still need to be further considered to match specifications imposed by our industrial partner, the achievement of this work is meaningful and could pave the way for a new generation of SCs integrated with smart sensing devices. The 3D printing of conductive ink directly on the cup’s curving surface is a true challenge, which has been demonstrated, for the first time, to be technically feasible throughout the additive manufacturing (AM) process.

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3D Printing of Flexible Composites via Magnetophoresis: Toward Medical Application Based on Low‐Frequency Induction Heating Effect

Cited by 10 publications

References 34 publications

Structuring BaTiO₃ /PDMS Nanocomposite via Dielectrophoresis for Fractional Flow Reserve Measurement

Structuring BaTiO₃ /PDMS Nanocomposite via Dielectrophoresis for Fractional Flow Reserve Measurement

Design Rules of Bidirectional Smart Sensor Coating for Condition Monitoring of Bearings

Extrusion-Based 3D Printing of Stretchable Electronic Coating for Condition Monitoring of Suction Cups

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3D Printing of Flexible Composites via Magnetophoresis: Toward Medical Application Based on Low‐Frequency Induction Heating Effect

Cited by 10 publications

References 34 publications

Structuring BaTiO3 /PDMS Nanocomposite via Dielectrophoresis for Fractional Flow Reserve Measurement

Structuring BaTiO3 /PDMS Nanocomposite via Dielectrophoresis for Fractional Flow Reserve Measurement

Design Rules of Bidirectional Smart Sensor Coating for Condition Monitoring of Bearings

Extrusion-Based 3D Printing of Stretchable Electronic Coating for Condition Monitoring of Suction Cups

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Product

Resources

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Structuring BaTiO₃ /PDMS Nanocomposite via Dielectrophoresis for Fractional Flow Reserve Measurement

Structuring BaTiO₃ /PDMS Nanocomposite via Dielectrophoresis for Fractional Flow Reserve Measurement