Stiffness-tunable device encapsulating magnetorheological fluids in a thin flexible polymer structure

We herein propose a liquid encapsulation method for a submillimeter-size polydimethylsiloxane (PDMS) membrane. We selected a magnetorheological (MR) fluid as the liquid to be encapsulated in the membrane, the stiffness of which is tuned by an external magnetic field. The proposed method consists of...

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Autores principales:	Hiroki ISHIZUKA, Norihisa MIKI
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2017
Materias:	liquid encapsulation mr fluid droplet tactile display palpation Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/05dea35619424dac95893adfcd3725c8
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spelling	oai:doaj.org-article:05dea35619424dac95893adfcd3725c82021-11-26T07:14:14ZStiffness-tunable device encapsulating magnetorheological fluids in a thin flexible polymer structure2187-974510.1299/mej.17-00383https://doaj.org/article/05dea35619424dac95893adfcd3725c82017-12-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/5/1/5_17-00383/_pdf/-char/enhttps://doaj.org/toc/2187-9745We herein propose a liquid encapsulation method for a submillimeter-size polydimethylsiloxane (PDMS) membrane. We selected a magnetorheological (MR) fluid as the liquid to be encapsulated in the membrane, the stiffness of which is tuned by an external magnetic field. The proposed method consists of two steps. First, a PDMS bump was made to contact a MR fluid, and a MR fluid droplet was formed on top of the bump. Next, the droplet was dipped in a PDMS casting solution and fully covered with a PDMS casting solution layer. Finally, the droplet was encapsulated in the membrane after curing. We experimentally confirmed that the radius of the PDMS bump and the viscosity of the MR fluid were variable parameters that could determine the height of the structure. We also evaluated the stiffness characteristics of the structure. The calculated Young's modulus indicated that the stiffness varied from 70 kPa to 180 kPa in the presence of an external magnetic field. The results indicated that the structure could emulate relatively soft materials and could be applied to a tactile display used in palpation.Hiroki ISHIZUKANorihisa MIKIThe Japan Society of Mechanical Engineersarticleliquid encapsulationmr fluiddroplettactile displaypalpationMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 5, Iss 1, Pp 17-00383-17-00383 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	liquid encapsulation mr fluid droplet tactile display palpation Mechanical engineering and machinery TJ1-1570
spellingShingle	liquid encapsulation mr fluid droplet tactile display palpation Mechanical engineering and machinery TJ1-1570 Hiroki ISHIZUKA Norihisa MIKI Stiffness-tunable device encapsulating magnetorheological fluids in a thin flexible polymer structure
description	We herein propose a liquid encapsulation method for a submillimeter-size polydimethylsiloxane (PDMS) membrane. We selected a magnetorheological (MR) fluid as the liquid to be encapsulated in the membrane, the stiffness of which is tuned by an external magnetic field. The proposed method consists of two steps. First, a PDMS bump was made to contact a MR fluid, and a MR fluid droplet was formed on top of the bump. Next, the droplet was dipped in a PDMS casting solution and fully covered with a PDMS casting solution layer. Finally, the droplet was encapsulated in the membrane after curing. We experimentally confirmed that the radius of the PDMS bump and the viscosity of the MR fluid were variable parameters that could determine the height of the structure. We also evaluated the stiffness characteristics of the structure. The calculated Young's modulus indicated that the stiffness varied from 70 kPa to 180 kPa in the presence of an external magnetic field. The results indicated that the structure could emulate relatively soft materials and could be applied to a tactile display used in palpation.
format	article
author	Hiroki ISHIZUKA Norihisa MIKI
author_facet	Hiroki ISHIZUKA Norihisa MIKI
author_sort	Hiroki ISHIZUKA
title	Stiffness-tunable device encapsulating magnetorheological fluids in a thin flexible polymer structure
title_short	Stiffness-tunable device encapsulating magnetorheological fluids in a thin flexible polymer structure
title_full	Stiffness-tunable device encapsulating magnetorheological fluids in a thin flexible polymer structure
title_fullStr	Stiffness-tunable device encapsulating magnetorheological fluids in a thin flexible polymer structure
title_full_unstemmed	Stiffness-tunable device encapsulating magnetorheological fluids in a thin flexible polymer structure
title_sort	stiffness-tunable device encapsulating magnetorheological fluids in a thin flexible polymer structure
publisher	The Japan Society of Mechanical Engineers
publishDate	2017
url	https://doaj.org/article/05dea35619424dac95893adfcd3725c8
work_keys_str_mv	AT hirokiishizuka stiffnesstunabledeviceencapsulatingmagnetorheologicalfluidsinathinflexiblepolymerstructure AT norihisamiki stiffnesstunabledeviceencapsulatingmagnetorheologicalfluidsinathinflexiblepolymerstructure
_version_	1718409698623881216

Stiffness-tunable device encapsulating magnetorheological fluids in a thin flexible polymer structure

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