Additively‐<scp>m</scp>anufactured piezoelectric devices

Woodward, David I.; Purssell, C. P.; Billson, D.R.; Hutchins, David A.; Leigh, Simon J.

doi:10.1002/pssa.201532272

Cited by 51 publications

(25 citation statements)

References 28 publications

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“…Stereolithography is one of the most promising additive manufacturing techniques as it allows for the fabrication of ceramic parts with a complex shape and precisely controlled internal architecture [1,2,3,4,5,6]. The method is based on the layer-by-layer photopolymerization of a liquid resin filled with ceramic particles directly from the CAD model and, is known for its high accuracy and excellent surface finishing [5,6,7,8,9,10]. There are two types of stereolithography-based techniques that can be applied to fabricate 3D ceramic objects.…”

Section: Introductionmentioning

confidence: 99%

Rheological and Curing Behavior of Acrylate-Based Suspensions for the DLP 3D Printing of Complex Zirconia Parts

et al. 2018

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The present study demonstrates the possibility of fabricating zirconia parts with a complex shape and internal architecture using a low-cost stereolithography-based technique. One of the critical steps in ceramics stereolithography is the preparation of a photo-curable slurry with properties that fulfill specific requirements, such as having a low viscosity, high solids loading and appropriate curing characteristics. Slurries with different acrylic monomers and ceramic fillers were studied concerning their rheological and curing behavior. New formulations based on mono- and tri-functional acrylic monomers revealed the following excellent rheological properties: The viscosity of the mono-/tri-acrylate-based slurry with 75 wt.% of zirconia was 1.6 Pa·s at 30 s−1. Zirconia stabilized with 3 mol.% yttria was found to be more favorable than zirconia with 8 mol.% yttria for slurry preparation, because of its lower surface area and higher tapped density. It was shown that the cure depth of the suspensions was suitable for printing objects with a 50 µm layer thickness, good interlayers connection and surface finishing.

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Section: Introductionmentioning

confidence: 99%

Rheological and Curing Behavior of Acrylate-Based Suspensions for the DLP 3D Printing of Complex Zirconia Parts

et al. 2018

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“…The stereolithography (SL) process with mixed fine ceramic powders suspended in a liquid photocurable resin has been used for many years for the fabrication of green parts with arbitrary final 3D shape [ 12 ]. Using photosensitive acrylic resin with piezoelectric micro-particles of 0.65Pb(Mg 1/3 Nb 2/3 )O 3 -0.35PbTiO 3 , and magnetite nanoparticles, SL also has been used for the fabrication of a green structure for piezoelectric [ 13 ] and magnetic flow sensors [ 8 ], respectively. The same method was utilised to demonstrate various 3D structures with excellent capacitive property and high dielectric constant using Ag-surface-coated nanoparticles of PbZr x Ti 1− x O 3 incorporated into the photocurable polymer solution [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Composite Filaments with High Dielectric Permittivity for Fused Deposition 3D Printing

Isakov

Grant

2017

Materials

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Additive manufacturing of complex structures with spatially varying electromagnetic properties can enable new applications in high-technology sectors such as communications and sensors. This work presents the fabrication method as well as microstructural and dielectric characterization of bespoke composite filaments for fused deposition modeling (FDM) 3D printing of microwave devices with a high relative dielectric permittivity ϵ=11 in the GHz frequency range. The filament is composed of 32 vol % of ferroelectric barium titanate (BaTiO3) micro-particles in a polymeric acrylonitrile butadiene styrene (ABS) matrix. An ionic organic ester surfactant was added during formulation to enhance the compatibility between the polymer and the BaTiO3. To promote reproducible and robust printability of the fabricated filament, and to promote plasticity, dibutyl phthalate was additionally used. The combined effect of 1 wt % surfactant and 5 wt % plasticizer resulted in a uniform, many hundreds of meters, continuous filament of commercial quality capable of many hours of uninterrupted 3D printing. We demonstrate the feasibility of using the high dielectric constant filament for 3D printing through the fabrication of a range of optical devices. The approach herein may be used as a guide for the successful fabrication of many types of composite filament with varying functions for a broad range of applications.

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“…Thus, the results in comparison to a standard design suggest strongly that it would be worthwhile for a prototype based on the Sierpinski tetrix to be built, in order to determine whether experimental results support these theoretical results, especially for fractal generation level five. Three-dimensional printing of electronic sensors and additively-manufactured piezoelectric devices are still emerging technologies [31,32,33]. However, the scope exists for tackling the construction of these three-dimensional piezoelectric structures.…”

Section: Resultsmentioning

confidence: 99%

A Mathematical Model of a Novel 3D Fractal-Inspired Piezoelectric Ultrasonic Transducer

Walker

Roach

2016

Sensors

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Piezoelectric ultrasonic transducers have the potential to operate as both a sensor and as an actuator of ultrasonic waves. Currently, manufactured transducers operate effectively over narrow bandwidths as a result of their regular structures which incorporate a single length scale. To increase the operational bandwidth of these devices, consideration has been given in the literature to the implementation of designs which contain a range of length scales. In this paper, a mathematical model of a novel Sierpinski tetrix fractal-inspired transducer for sensor applications is presented. To accompany the growing body of research based on fractal-inspired transducers, this paper offers the first sensor design based on a three-dimensional fractal. The three-dimensional model reduces to an effective one-dimensional model by allowing for a number of assumptions of the propagating wave in the fractal lattice. The reception sensitivity of the sensor is investigated. Comparisons of reception force response (RFR) are performed between this novel design along with a previously investigated Sierpinski gasket-inspired device and standard Euclidean design. The results indicate that the proposed device surpasses traditional design sensors.

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Additively‐manufactured piezoelectric devices

Cited by 51 publications

References 28 publications

Rheological and Curing Behavior of Acrylate-Based Suspensions for the DLP 3D Printing of Complex Zirconia Parts

Rheological and Curing Behavior of Acrylate-Based Suspensions for the DLP 3D Printing of Complex Zirconia Parts

Fabrication of Composite Filaments with High Dielectric Permittivity for Fused Deposition 3D Printing

A Mathematical Model of a Novel 3D Fractal-Inspired Piezoelectric Ultrasonic Transducer

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