2D to 2.5D transitions through controlled swelling delamination of hydrogel microstructures

Hydrogel precursor photoresists (HPR) are being studied widely due to the close similarities between HPR cured microstructures and biological materials. A vast majority of such resists are formulated in water and suffer from swelling-related inhomogeneities during microfabrication. Hence formulation...

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Autores principales:	Ha Cheol Woo, Dupont Maxime, Kim Jongsu, Choi Jae Won, Lee Ji-Sun, Han Jisu, Yeon Si-Mo, Son Yong, Cheng Xiangming, Edavalath Hritwik N., Prabhakaran Prem
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Two-photon lithography Laser direct writing Hydrogels Soft-materials 4D materials 3D printing Materials of engineering and construction. Mechanics of materials TA401-492
Acceso en línea:	https://doaj.org/article/1d705b94633e4baf9fb8adbdd5949bcb
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id	oai:doaj.org-article:1d705b94633e4baf9fb8adbdd5949bcb
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spelling	oai:doaj.org-article:1d705b94633e4baf9fb8adbdd5949bcb2021-11-20T04:55:42Z2D to 2.5D transitions through controlled swelling delamination of hydrogel microstructures0264-127510.1016/j.matdes.2021.110226https://doaj.org/article/1d705b94633e4baf9fb8adbdd5949bcb2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0264127521007814https://doaj.org/toc/0264-1275Hydrogel precursor photoresists (HPR) are being studied widely due to the close similarities between HPR cured microstructures and biological materials. A vast majority of such resists are formulated in water and suffer from swelling-related inhomogeneities during microfabrication. Hence formulation HPRs in non-aqueous media are being studied as an alternative. This approach enables controlled swelling of fabricated structures. In this work, we demonstrate that controlled swelling of hydrogel microstructures fabricated by two-photon lithography (TPL) can be used to drive 2D to 2.5D transitions in flat microstructures. Through fabrication experiments, mechanical analysis and finite element method (FEM) simulations we have shown that swelling delamination leads to bend microstructures, and the height of the resulting bend structure depends on the designed thickness of the structure.Ha Cheol WooDupont MaximeKim JongsuChoi Jae WonLee Ji-SunHan JisuYeon Si-MoSon YongCheng XiangmingEdavalath Hritwik N.Prabhakaran PremElsevierarticleTwo-photon lithographyLaser direct writingHydrogelsSoft-materials4D materials3D printingMaterials of engineering and construction. Mechanics of materialsTA401-492ENMaterials & Design, Vol 212, Iss , Pp 110226- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Two-photon lithography Laser direct writing Hydrogels Soft-materials 4D materials 3D printing Materials of engineering and construction. Mechanics of materials TA401-492
spellingShingle	Two-photon lithography Laser direct writing Hydrogels Soft-materials 4D materials 3D printing Materials of engineering and construction. Mechanics of materials TA401-492 Ha Cheol Woo Dupont Maxime Kim Jongsu Choi Jae Won Lee Ji-Sun Han Jisu Yeon Si-Mo Son Yong Cheng Xiangming Edavalath Hritwik N. Prabhakaran Prem 2D to 2.5D transitions through controlled swelling delamination of hydrogel microstructures
description	Hydrogel precursor photoresists (HPR) are being studied widely due to the close similarities between HPR cured microstructures and biological materials. A vast majority of such resists are formulated in water and suffer from swelling-related inhomogeneities during microfabrication. Hence formulation HPRs in non-aqueous media are being studied as an alternative. This approach enables controlled swelling of fabricated structures. In this work, we demonstrate that controlled swelling of hydrogel microstructures fabricated by two-photon lithography (TPL) can be used to drive 2D to 2.5D transitions in flat microstructures. Through fabrication experiments, mechanical analysis and finite element method (FEM) simulations we have shown that swelling delamination leads to bend microstructures, and the height of the resulting bend structure depends on the designed thickness of the structure.
format	article
author	Ha Cheol Woo Dupont Maxime Kim Jongsu Choi Jae Won Lee Ji-Sun Han Jisu Yeon Si-Mo Son Yong Cheng Xiangming Edavalath Hritwik N. Prabhakaran Prem
author_facet	Ha Cheol Woo Dupont Maxime Kim Jongsu Choi Jae Won Lee Ji-Sun Han Jisu Yeon Si-Mo Son Yong Cheng Xiangming Edavalath Hritwik N. Prabhakaran Prem
author_sort	Ha Cheol Woo
title	2D to 2.5D transitions through controlled swelling delamination of hydrogel microstructures
title_short	2D to 2.5D transitions through controlled swelling delamination of hydrogel microstructures
title_full	2D to 2.5D transitions through controlled swelling delamination of hydrogel microstructures
title_fullStr	2D to 2.5D transitions through controlled swelling delamination of hydrogel microstructures
title_full_unstemmed	2D to 2.5D transitions through controlled swelling delamination of hydrogel microstructures
title_sort	2d to 2.5d transitions through controlled swelling delamination of hydrogel microstructures
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/1d705b94633e4baf9fb8adbdd5949bcb
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2D to 2.5D transitions through controlled swelling delamination of hydrogel microstructures

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