scholarly journals Electromechanical characterization of a 3D printed dielectric material for dielectric electroactive polymer actuators

2019 ◽  
Vol 297 ◽  
pp. 111565 ◽  
Author(s):  
David Gonzalez ◽  
Jose Garcia ◽  
Brittany Newell
Author(s):  
A.W. Gan ◽  
Kirthika Senthil Kumar ◽  
Lei Zhang ◽  
Jianyong Ouyang ◽  
Hongliang Ren

Author(s):  
David Gonzalez ◽  
Brittany Newell ◽  
Jose Garcia ◽  
Lucas Noble ◽  
Trevor Mamer

Dielectric electroactive polymers are materials capable of mechanically adjusting their volume in response to an electrical stimulus. However, currently these materials require multi-step manufacturing processes which are not additive. This paper presents a novel 3D printed flexible dielectric material and characterizes its use as a dielectric electroactive polymer (DEAP) actuator. The 3D printed material was characterized electrically and mechanically and its functionality as a dielectric electroactive polymer actuator was demonstrated. The flexible 3-D printed material demonstrated a high dielectric constant and ideal stress-strain performance in tensile testing making the 3-D printed material ideal for use as a DEAP actuator. The tensile stress-strain properties were measured on samples printed under three different conditions (three printing angles 0°, 45° and 90°). The results demonstrated the flexible material presents different responses depending on the printing angle. Based on these results, it was possible to determine that the active structure needs low pre-strain to perform a visible contractive displacement when voltage is applied to the electrodes. The actuator produced an area expansion of 5.48% in response to a 4.3 kV applied voltage, with an initial pre-strain of 63.21% applied to the dielectric material.


2006 ◽  
Vol 514-516 ◽  
pp. 910-914
Author(s):  
Paulo Inácio ◽  
José N. Marat-Mendes ◽  
C.J. Dias

Most piezoelectric biosensors normally use crystals, as in the quartz crystal microbalances or surface acoustic wave devices. A new system is described in which piezoelectric polymer films (made of polyvinylidene fluoride, PVDF, and Immobilon, a porous type of PVDF) are used to produce a mass sensitive oscillatory resonant device. Recent results demonstrated that this system successfully detects the binding between bovine IgG (immunoglobulin G) and anti bovine IgG. In order to improve the performance of the biosensor the electromechanical behaviour of such film-membrane is being studied. Miniaturization is also a desirable trend which will be pursued. Thus reports on the dependence on the electrical, mechanical and biological properties with the size of the film will be presented.


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