Kirigami-Inspired Inflatables with Programmable Shapes

TY - JOUR

T1 - Kirigami-Inspired Inflatables with Programmable Shapes

AU - Jin, Lishuai

AU - Forte, Antonio Elia

AU - Deng, Bolei

AU - Rafsanjani, Ahmad

AU - Bertoldi, Katia

N1 - Funding Information: L.J. and A.E.F. contributed equally to this work. K.B. acknowledges support from the National Science Foundation under Grants No. DMR‐1420570 and DMR‐1922321. A.E.F. acknowledges that this project has received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Skłodowska‐Curie grant agreement No. 798244. A.R. acknowledges support from Swiss National Science Foundation through Grant P3P3P2‐174326. Funding Information: L.J. and A.E.F. contributed equally to this work. K.B. acknowledges support from the National Science Foundation under Grants No. DMR-1420570 and DMR-1922321. A.E.F. acknowledges that this project has received funding from the European Union's Horizon 2020 research and innovation programme under the Marie Sk?odowska-Curie grant agreement No. 798244. A.R. acknowledges support from Swiss National Science Foundation through Grant P3P3P2-174326. Publisher Copyright: © 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Copyright: Copyright 2020 Elsevier B.V., All rights reserved.

PY - 2020/8/1

Y1 - 2020/8/1

N2 - Kirigami, the Japanese art of paper cutting, has recently enabled the design of stretchable mechanical metamaterials that can be easily realized by embedding arrays of periodic cuts into an elastic sheet. Here, kirigami principles are exploited to design inflatables that can mimic target shapes upon pressurization. The system comprises a kirigami sheet embedded into an unstructured elastomeric membrane. First, it is shown that the inflated shape can be controlled by tuning the geometric parameters of the kirigami pattern. Then, by applying a simple optimization algorithm, the best parameters that enable the kirigami inflatables to transform into a family of target shapes at a given pressure are identified. Furthermore, thanks to the tessellated nature of the kirigami, it is shown that we can selectively manipulate the parameters of the single units to allow the reproduction of features at different scales and ultimately enable a more accurate mimicking of the target.

AB - Kirigami, the Japanese art of paper cutting, has recently enabled the design of stretchable mechanical metamaterials that can be easily realized by embedding arrays of periodic cuts into an elastic sheet. Here, kirigami principles are exploited to design inflatables that can mimic target shapes upon pressurization. The system comprises a kirigami sheet embedded into an unstructured elastomeric membrane. First, it is shown that the inflated shape can be controlled by tuning the geometric parameters of the kirigami pattern. Then, by applying a simple optimization algorithm, the best parameters that enable the kirigami inflatables to transform into a family of target shapes at a given pressure are identified. Furthermore, thanks to the tessellated nature of the kirigami, it is shown that we can selectively manipulate the parameters of the single units to allow the reproduction of features at different scales and ultimately enable a more accurate mimicking of the target.

KW - inverse design

KW - kirigami

KW - mechanical metamaterials

KW - programmable inflatables

KW - shape shifting

UR - http://www.scopus.com/inward/record.url?scp=85087456100&partnerID=8YFLogxK

U2 - 10.1002/adma.202001863

DO - 10.1002/adma.202001863

M3 - Article

C2 - 32627259

AN - SCOPUS:85087456100

SN - 0935-9648

VL - 32

JO - Advanced Materials

JF - Advanced Materials

IS - 33

M1 - 2001863

ER -