Harnessing instabilities for design of soft reconfigurable auxetic/chiral materials

Jongmin Shim, Sicong Shan, Andrej Kosmrlj, Sung H. Kang, Elizabeth R. Chen, James C. Weaver, Katia Bertoldi

Research output: Contribution to journalArticle

79 Citations (Scopus)

Abstract

Most materials have a unique form optimized for a specific property and function. However, the ability to reconfigure material structures depending on stimuli opens exciting opportunities. Although mechanical instabilities have been traditionally viewed as a failure mode, here we exploit them to design a class of 2D soft materials whose architecture can be dramatically changed in response to an external stimulus. By considering geometric constraints on the tessellations of the 2D Euclidean plane, we have identified four possible periodic distributions of uniform circular holes where mechanical instability can be exploited to reversibly switch between expanded (i.e. with circular holes) and compact (i.e. with elongated, almost closed elliptical holes) periodic configurations. Interestingly, in all these structures buckling is found to induce large negative values of incremental Poisson's ratio and in two of them also the formation of chiral patterns. Using a combination of finite element simulations and experiments at the centimeter scale we demonstrate a proof-of-concept of the proposed materials. Since the proposed mechanism for reconfigurable materials is induced by elastic instability, it is reversible, repeatable and scale-independent.

Original languageEnglish (US)
Pages (from-to)8198-8202
Number of pages5
JournalSoft Matter
Volume9
Issue number34
DOIs
StatePublished - Sep 14 2013
Externally publishedYes

Fingerprint

stimuli
failure modes
Poisson ratio
buckling
Failure modes
Buckling
configurations
Switches
simulation
Experiments

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Chemistry(all)

Cite this

Shim, J., Shan, S., Kosmrlj, A., Kang, S. H., Chen, E. R., Weaver, J. C., & Bertoldi, K. (2013). Harnessing instabilities for design of soft reconfigurable auxetic/chiral materials. Soft Matter, 9(34), 8198-8202. https://doi.org/10.1039/c3sm51148k
Shim, Jongmin ; Shan, Sicong ; Kosmrlj, Andrej ; Kang, Sung H. ; Chen, Elizabeth R. ; Weaver, James C. ; Bertoldi, Katia. / Harnessing instabilities for design of soft reconfigurable auxetic/chiral materials. In: Soft Matter. 2013 ; Vol. 9, No. 34. pp. 8198-8202.
@article{919e6c689c834bd4bee15d7e65407e10,
title = "Harnessing instabilities for design of soft reconfigurable auxetic/chiral materials",
abstract = "Most materials have a unique form optimized for a specific property and function. However, the ability to reconfigure material structures depending on stimuli opens exciting opportunities. Although mechanical instabilities have been traditionally viewed as a failure mode, here we exploit them to design a class of 2D soft materials whose architecture can be dramatically changed in response to an external stimulus. By considering geometric constraints on the tessellations of the 2D Euclidean plane, we have identified four possible periodic distributions of uniform circular holes where mechanical instability can be exploited to reversibly switch between expanded (i.e. with circular holes) and compact (i.e. with elongated, almost closed elliptical holes) periodic configurations. Interestingly, in all these structures buckling is found to induce large negative values of incremental Poisson's ratio and in two of them also the formation of chiral patterns. Using a combination of finite element simulations and experiments at the centimeter scale we demonstrate a proof-of-concept of the proposed materials. Since the proposed mechanism for reconfigurable materials is induced by elastic instability, it is reversible, repeatable and scale-independent.",
author = "Jongmin Shim and Sicong Shan and Andrej Kosmrlj and Kang, {Sung H.} and Chen, {Elizabeth R.} and Weaver, {James C.} and Katia Bertoldi",
year = "2013",
month = "9",
day = "14",
doi = "https://doi.org/10.1039/c3sm51148k",
language = "English (US)",
volume = "9",
pages = "8198--8202",
journal = "Soft Matter",
issn = "1744-683X",
publisher = "Royal Society of Chemistry",
number = "34",

}

Shim, J, Shan, S, Kosmrlj, A, Kang, SH, Chen, ER, Weaver, JC & Bertoldi, K 2013, 'Harnessing instabilities for design of soft reconfigurable auxetic/chiral materials', Soft Matter, vol. 9, no. 34, pp. 8198-8202. https://doi.org/10.1039/c3sm51148k

Harnessing instabilities for design of soft reconfigurable auxetic/chiral materials. / Shim, Jongmin; Shan, Sicong; Kosmrlj, Andrej; Kang, Sung H.; Chen, Elizabeth R.; Weaver, James C.; Bertoldi, Katia.

In: Soft Matter, Vol. 9, No. 34, 14.09.2013, p. 8198-8202.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Harnessing instabilities for design of soft reconfigurable auxetic/chiral materials

AU - Shim, Jongmin

AU - Shan, Sicong

AU - Kosmrlj, Andrej

AU - Kang, Sung H.

AU - Chen, Elizabeth R.

AU - Weaver, James C.

AU - Bertoldi, Katia

PY - 2013/9/14

Y1 - 2013/9/14

N2 - Most materials have a unique form optimized for a specific property and function. However, the ability to reconfigure material structures depending on stimuli opens exciting opportunities. Although mechanical instabilities have been traditionally viewed as a failure mode, here we exploit them to design a class of 2D soft materials whose architecture can be dramatically changed in response to an external stimulus. By considering geometric constraints on the tessellations of the 2D Euclidean plane, we have identified four possible periodic distributions of uniform circular holes where mechanical instability can be exploited to reversibly switch between expanded (i.e. with circular holes) and compact (i.e. with elongated, almost closed elliptical holes) periodic configurations. Interestingly, in all these structures buckling is found to induce large negative values of incremental Poisson's ratio and in two of them also the formation of chiral patterns. Using a combination of finite element simulations and experiments at the centimeter scale we demonstrate a proof-of-concept of the proposed materials. Since the proposed mechanism for reconfigurable materials is induced by elastic instability, it is reversible, repeatable and scale-independent.

AB - Most materials have a unique form optimized for a specific property and function. However, the ability to reconfigure material structures depending on stimuli opens exciting opportunities. Although mechanical instabilities have been traditionally viewed as a failure mode, here we exploit them to design a class of 2D soft materials whose architecture can be dramatically changed in response to an external stimulus. By considering geometric constraints on the tessellations of the 2D Euclidean plane, we have identified four possible periodic distributions of uniform circular holes where mechanical instability can be exploited to reversibly switch between expanded (i.e. with circular holes) and compact (i.e. with elongated, almost closed elliptical holes) periodic configurations. Interestingly, in all these structures buckling is found to induce large negative values of incremental Poisson's ratio and in two of them also the formation of chiral patterns. Using a combination of finite element simulations and experiments at the centimeter scale we demonstrate a proof-of-concept of the proposed materials. Since the proposed mechanism for reconfigurable materials is induced by elastic instability, it is reversible, repeatable and scale-independent.

UR - http://www.scopus.com/inward/record.url?scp=84881459636&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84881459636&partnerID=8YFLogxK

U2 - https://doi.org/10.1039/c3sm51148k

DO - https://doi.org/10.1039/c3sm51148k

M3 - Article

VL - 9

SP - 8198

EP - 8202

JO - Soft Matter

JF - Soft Matter

SN - 1744-683X

IS - 34

ER -