Magnetic Field Triggered Multicycle Damage Sensing and Self Healing

Multifunctional materials inspired by biological structures have attracted great interest, e.g. for wearable/ flexible “skin” and smart coatings. A current challenge in this area is to develop an artificial material which mimics biological skin by simultaneously displaying color change on damage as...

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Main Authors: Ahmed, Anansa S., Ramanujan, Raju Vijayaraghavan
Other Authors: School of Materials Science & Engineering
Format: Article
Language:English
Published: 2015
Online Access:https://hdl.handle.net/10356/103178
http://hdl.handle.net/10220/38722
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1031782023-07-14T15:46:15Z Magnetic Field Triggered Multicycle Damage Sensing and Self Healing Ahmed, Anansa S. Ramanujan, Raju Vijayaraghavan School of Materials Science & Engineering Multifunctional materials inspired by biological structures have attracted great interest, e.g. for wearable/ flexible “skin” and smart coatings. A current challenge in this area is to develop an artificial material which mimics biological skin by simultaneously displaying color change on damage as well as self healing of the damaged region. Here we report, for the first time, the development of a damage sensing and self healing magnet-polymer composite (Magpol), which actively responds to an external magnetic field. We incorporated reversible sensing using mechanochromic molecules in a shape memory thermoplastic matrix. Exposure to an alternating magnetic field (AMF) triggers shape recovery and facilitates damage repair. Magpol exhibited a linear strain response upto 150% strain and complete recovery after healing. We have demonstrated the use of this concept in a reusable biomedical device i.e., coated guidewires. Our findings offer a new synergistic method to bestow multifunctionality for applications ranging from medical device coatings to adaptive wing structures. Published version 2015-09-21T09:05:36Z 2019-12-06T21:06:51Z 2015-09-21T09:05:36Z 2019-12-06T21:06:51Z 2015 2015 Journal Article Ahmed, A. S., & Ramanujan, R. V. (2015). Magnetic Field Triggered Multicycle Damage Sensing and Self Healing. Scientific Reports, 5, 13773- 2045-2322 https://hdl.handle.net/10356/103178 http://hdl.handle.net/10220/38722 10.1038/srep13773 26348284 en Scientific Reports This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
description Multifunctional materials inspired by biological structures have attracted great interest, e.g. for wearable/ flexible “skin” and smart coatings. A current challenge in this area is to develop an artificial material which mimics biological skin by simultaneously displaying color change on damage as well as self healing of the damaged region. Here we report, for the first time, the development of a damage sensing and self healing magnet-polymer composite (Magpol), which actively responds to an external magnetic field. We incorporated reversible sensing using mechanochromic molecules in a shape memory thermoplastic matrix. Exposure to an alternating magnetic field (AMF) triggers shape recovery and facilitates damage repair. Magpol exhibited a linear strain response upto 150% strain and complete recovery after healing. We have demonstrated the use of this concept in a reusable biomedical device i.e., coated guidewires. Our findings offer a new synergistic method to bestow multifunctionality for applications ranging from medical device coatings to adaptive wing structures.
author2 School of Materials Science & Engineering
author_facet School of Materials Science & Engineering
Ahmed, Anansa S.
Ramanujan, Raju Vijayaraghavan
format Article
author Ahmed, Anansa S.
Ramanujan, Raju Vijayaraghavan
spellingShingle Ahmed, Anansa S.
Ramanujan, Raju Vijayaraghavan
Magnetic Field Triggered Multicycle Damage Sensing and Self Healing
author_sort Ahmed, Anansa S.
title Magnetic Field Triggered Multicycle Damage Sensing and Self Healing
title_short Magnetic Field Triggered Multicycle Damage Sensing and Self Healing
title_full Magnetic Field Triggered Multicycle Damage Sensing and Self Healing
title_fullStr Magnetic Field Triggered Multicycle Damage Sensing and Self Healing
title_full_unstemmed Magnetic Field Triggered Multicycle Damage Sensing and Self Healing
title_sort magnetic field triggered multicycle damage sensing and self healing
publishDate 2015
url https://hdl.handle.net/10356/103178
http://hdl.handle.net/10220/38722
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