Design of a Kirigami Structure with a Large Uniform Deformation Region

We designed a kirigami structure with a particular shape at both ends to provide a large uniform deformation region when stretched. When a kirigami structure is stretched, non-deformation regions, where the regions’ cuts do not open, and non-uniform deformation regions, where the regions’ cuts are n...

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Main Authors: Hiroki Taniyama, Eiji Iwase
Format: Article
Language:English
Published: MDPI AG 2021-01-01
Series:Micromachines
Subjects:
Online Access:https://www.mdpi.com/2072-666X/12/1/76
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author Hiroki Taniyama
Eiji Iwase
author_facet Hiroki Taniyama
Eiji Iwase
author_sort Hiroki Taniyama
collection DOAJ
description We designed a kirigami structure with a particular shape at both ends to provide a large uniform deformation region when stretched. When a kirigami structure is stretched, non-deformation regions, where the regions’ cuts do not open, and non-uniform deformation regions, where the regions’ cuts are not uniformly deformed, are produced. The extent of the non-deformation and non-uniform deformation regions increases in proportion to the number of cut cycles in the width direction <i>n</i><sub>w</sub> this reduces the percentage of the uniform deformation region. We propose a method that increases the uniform deformation region in a kirigami structure by deforming the shape of the ends from a rectangle to a trapezoid when stretched. The proposed kirigami structure has separation lines at both ends that separate cuts in the width direction, and the position of contacts at both ends are moved to the center. The proposed kirigami structure has a large uniform deformation region, even when <i>n</i><sub>w</sub> is large, as evidenced by calculating the area of open cuts under stretching. The product of our study realizes a stretchable electro device with a large area, which maintains the position of evenly mounted functional elements when stretched.
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spelling doaj.art-dd310991f6144aeeac04c156e9d80c472023-12-03T12:57:33ZengMDPI AGMicromachines2072-666X2021-01-011217610.3390/mi12010076Design of a Kirigami Structure with a Large Uniform Deformation RegionHiroki Taniyama0Eiji Iwase1Department of Applied Mechanics and Aerospace Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, JapanDepartment of Applied Mechanics and Aerospace Engineering, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555, JapanWe designed a kirigami structure with a particular shape at both ends to provide a large uniform deformation region when stretched. When a kirigami structure is stretched, non-deformation regions, where the regions’ cuts do not open, and non-uniform deformation regions, where the regions’ cuts are not uniformly deformed, are produced. The extent of the non-deformation and non-uniform deformation regions increases in proportion to the number of cut cycles in the width direction <i>n</i><sub>w</sub> this reduces the percentage of the uniform deformation region. We propose a method that increases the uniform deformation region in a kirigami structure by deforming the shape of the ends from a rectangle to a trapezoid when stretched. The proposed kirigami structure has separation lines at both ends that separate cuts in the width direction, and the position of contacts at both ends are moved to the center. The proposed kirigami structure has a large uniform deformation region, even when <i>n</i><sub>w</sub> is large, as evidenced by calculating the area of open cuts under stretching. The product of our study realizes a stretchable electro device with a large area, which maintains the position of evenly mounted functional elements when stretched.https://www.mdpi.com/2072-666X/12/1/76flexible devicestretchable electronic substratekirigami structuremechanical metamaterials
spellingShingle Hiroki Taniyama
Eiji Iwase
Design of a Kirigami Structure with a Large Uniform Deformation Region
Micromachines
flexible device
stretchable electronic substrate
kirigami structure
mechanical metamaterials
title Design of a Kirigami Structure with a Large Uniform Deformation Region
title_full Design of a Kirigami Structure with a Large Uniform Deformation Region
title_fullStr Design of a Kirigami Structure with a Large Uniform Deformation Region
title_full_unstemmed Design of a Kirigami Structure with a Large Uniform Deformation Region
title_short Design of a Kirigami Structure with a Large Uniform Deformation Region
title_sort design of a kirigami structure with a large uniform deformation region
topic flexible device
stretchable electronic substrate
kirigami structure
mechanical metamaterials
url https://www.mdpi.com/2072-666X/12/1/76
work_keys_str_mv AT hirokitaniyama designofakirigamistructurewithalargeuniformdeformationregion
AT eijiiwase designofakirigamistructurewithalargeuniformdeformationregion