Responsive and Foldable Soft Materials

Jiaqi Liu; Yuchong Gao; Young-Joo Lee; Shu Yang

doi:10.1016/j.trechm.2019.11.003

Responsive and Foldable Soft Materials

Jiaqi Liu
, Yuchong Gao
, Young-Joo Lee
, Shu Yang^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

69 Citations (Scopus)

Abstract

Stimulus-responsive soft materials that can enable folding of a 2D sheet into a 3D object have potential significant applications, including wearable electronics, biomimetic machines, soft robotics, drug delivery, biomedical devices, and responsive buildings. The responses can be tuned by the materials chemistry, composition, and type of external stimulus; the direction and magnitude of the deformation can be varied by geometric design and incorporation of nonresponsive materials and nanofillers. In this review, we overview different types of responsive materials (e.g., responsive hydrogels, shape memory polymers, liquid crystal elastomers, and polymer composites) and some of the basic folding mechanisms. We highlight the required material properties, fabrication techniques, and structural designs for desirable folding structures. © 2019 Elsevier Inc.

Original language	English
Pages (from-to)	107-122
Number of pages	16
Journal	Trends in Chemistry
Volume	2
Issue number	2
Online published	3 Dec 2019
DOIs	https://doi.org/10.1016/j.trechm.2019.11.003
Publication status	Published - Feb 2020
Externally published	Yes

Funding

The authors acknowledge funding from National Science Foundation (NSF) through the University of Pennsylvania Materials Research Science and Engineering Center (MRSEC) (DMR-1720530) and Army Research Offices (ARO) through the Multidisciplinary University Research Initiative (MURI) program, ARO #W911-NF-1810327 (Topic Chief, Samuel Stanton).

Research Keywords

foldable
hydrogels
liquid crystal elastomers
polymer composites
responsive
shape memory polymers
soft materials

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AU - Gao, Yuchong

AU - Lee, Young-Joo

AU - Yang, Shu

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AB - Stimulus-responsive soft materials that can enable folding of a 2D sheet into a 3D object have potential significant applications, including wearable electronics, biomimetic machines, soft robotics, drug delivery, biomedical devices, and responsive buildings. The responses can be tuned by the materials chemistry, composition, and type of external stimulus; the direction and magnitude of the deformation can be varied by geometric design and incorporation of nonresponsive materials and nanofillers. In this review, we overview different types of responsive materials (e.g., responsive hydrogels, shape memory polymers, liquid crystal elastomers, and polymer composites) and some of the basic folding mechanisms. We highlight the required material properties, fabrication techniques, and structural designs for desirable folding structures. © 2019 Elsevier Inc.

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KW - hydrogels

KW - liquid crystal elastomers

KW - polymer composites

KW - responsive

KW - shape memory polymers

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DO - 10.1016/j.trechm.2019.11.003

M3 - RGC 21 - Publication in refereed journal

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SP - 107

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JO - Trends in Chemistry

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Responsive and Foldable Soft Materials

Abstract

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