Piezoelectric polymer thin films with architected cuts

Abstract

Abstract

Programmable Hierarchical Kirigami

“…[20][21][22][23][24][25] The out-of-plane buckling behavior of thin hierarchical kirigami sheets remains largely unexplored, and the only closely related study focuses on a system in which patterned notches are introduced in addition to cuts to guide the pop-up in a preferred direction. We find that for sufficiently small thicknesses, the behavior is completely different from that previously reported for thick sheets, [20][21][22][23][24][25][26][27][28][29][30] as mechanical instabilities triggered by the applied deformation result in the formation of complex 3D patterns and sequential pop-up processes. We first use a combination of experiments and numerical simulations to study the response under uniaxial tension of kirigami sheets with hierarchical cuts arranged to form an array of squares connected at their vertices via thin ligaments and investigate in detail both the effect of geometry as well as plasticity of the sheets.…”

“…We first use a combination of experiments and numerical simulations to study the response under uniaxial tension of kirigami sheets with hierarchical cuts arranged to form an array of squares connected at their vertices via thin ligaments and investigate in detail both the effect of geometry as well as plasticity of the sheets. We find that for sufficiently small thicknesses, the behavior is completely different from that previously reported for thick sheets, [20][21][22][23][24][25][26][27][28][29][30] as mechanical instabilities triggered by the applied deformation result in the formation of complex 3D patterns and sequential pop-up processes. We then show that the geometric parameters of the embedded hierarchy enable us to tune both the morphology of the buckling-induced 3D patterns as well as the stress-strain response of the surfaces.…”

Piezoelectric polymer thin films with architected cuts

“…Using architected cuts doesn't require changing the material or overall dimensions, making it attractive for applications in self-powered devices with design constraints. [1]…”

Implantable Cardiac Kirigami‐Inspired Lead‐Based Energy Harvester Fabricated by Enhanced Piezoelectric Composite Film

“…[7][8][9] Therefore, the Kirigami structures have been adopted to many applications, especially sensors, [10,11] energy storage, [12] actuator, and robotics. [13] To the best of our knowledge, although there are few works aiming to harvest ambient energy using Kirigami structure, [14,15] no study has yet reported an implantable energy harvester built based on this concept. [16] In our work, combining the advantage of the PVDF-TrFE composite material with remarkable energy conversion efficiency, we developed a Kirigami-inspired piezoelectric composite patch.…”

“…[ 7–9 ] Therefore, the Kirigami structures have been adopted to many applications, especially sensors, [ 10,11 ] energy storage, [ 12 ] actuator, and robotics. [ 13 ] To the best of our knowledge, although there are few works aiming to harvest ambient energy using Kirigami structure, [ 14,15 ] no study has yet reported an implantable energy harvester built based on this concept. [ 16 ]…”