Development and micro-gap flow evaluation of electro-rheological nano-suspensions

Katsufumi Tanaka; Takanobu Hira; Ryuichi Fukui; Haruki Kobayashi; Ryuichi Akiyama; Masami Nakano; Shouta Enami; Atsushi Totsuka

doi:10.1007/s00396-012-2849-x

Development and micro-gap flow evaluation of electro-rheological nano-suspensions

Katsufumi Tanaka, Takanobu Hira, Ryuichi Fukui, Haruki Kobayashi, Ryuichi Akiyama, Masami Nakano, Shouta Enami, Atsushi Totsuka

Creative Flow Research Division

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

Electro-rheological (ER) nano-suspensions based on titanium dioxide nano-particles with particle diameter on the order of 100 nm were prepared. Micro-gap flow behavior and microstructure were evaluated for the suspensions with a particle volume fraction of 8.8 vol%. For the nano-suspension based on a silicone oil, the ER effect and flow behavior were found to be stable during the sharing time on the order of 10² s. The ER response measured at a given strength of the electric field for the nano-suspension based on a chemically modified silicone oil was effectively induced by the electric field, especially with low strengths, and it was larger than that of the nano-suspension based on the silicone oil but slightly lower than that based on a hydrocarbon oil. Furthermore, the relaxation of the ER response after removal of the electric field was somewhat slow for the nano-suspension based on the hydrocarbon oil, whereas it was fairly well for the nano-suspension based on the modified silicone oil.

Original language	English
Pages (from-to)	1279-1286
Number of pages	8
Journal	Colloid and Polymer Science
Volume	291
Issue number	5
DOIs	https://doi.org/10.1007/s00396-012-2849-x
Publication status	Published - 2013 May

Keywords

Electro-rheology
Micro-gap
Microstructure
Nano-particles
Yield stress

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Polymers and Plastics
Colloid and Surface Chemistry
Materials Chemistry

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10.1007/s00396-012-2849-x

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title = "Development and micro-gap flow evaluation of electro-rheological nano-suspensions",

abstract = "Electro-rheological (ER) nano-suspensions based on titanium dioxide nano-particles with particle diameter on the order of 100 nm were prepared. Micro-gap flow behavior and microstructure were evaluated for the suspensions with a particle volume fraction of 8.8 vol%. For the nano-suspension based on a silicone oil, the ER effect and flow behavior were found to be stable during the sharing time on the order of 102 s. The ER response measured at a given strength of the electric field for the nano-suspension based on a chemically modified silicone oil was effectively induced by the electric field, especially with low strengths, and it was larger than that of the nano-suspension based on the silicone oil but slightly lower than that based on a hydrocarbon oil. Furthermore, the relaxation of the ER response after removal of the electric field was somewhat slow for the nano-suspension based on the hydrocarbon oil, whereas it was fairly well for the nano-suspension based on the modified silicone oil.",

keywords = "Electro-rheology, Micro-gap, Microstructure, Nano-particles, Yield stress",

author = "Katsufumi Tanaka and Takanobu Hira and Ryuichi Fukui and Haruki Kobayashi and Ryuichi Akiyama and Masami Nakano and Shouta Enami and Atsushi Totsuka",

note = "Funding Information: This work was partially supported by the Cooperative Research Program of the Institute of Fluid Science, Tohoku University.",

year = "2013",

month = may,

doi = "10.1007/s00396-012-2849-x",

language = "English",

volume = "291",

pages = "1279--1286",

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AU - Tanaka, Katsufumi

AU - Hira, Takanobu

AU - Fukui, Ryuichi

AU - Kobayashi, Haruki

AU - Akiyama, Ryuichi

AU - Nakano, Masami

AU - Enami, Shouta

AU - Totsuka, Atsushi

N1 - Funding Information: This work was partially supported by the Cooperative Research Program of the Institute of Fluid Science, Tohoku University.

PY - 2013/5

Y1 - 2013/5

N2 - Electro-rheological (ER) nano-suspensions based on titanium dioxide nano-particles with particle diameter on the order of 100 nm were prepared. Micro-gap flow behavior and microstructure were evaluated for the suspensions with a particle volume fraction of 8.8 vol%. For the nano-suspension based on a silicone oil, the ER effect and flow behavior were found to be stable during the sharing time on the order of 102 s. The ER response measured at a given strength of the electric field for the nano-suspension based on a chemically modified silicone oil was effectively induced by the electric field, especially with low strengths, and it was larger than that of the nano-suspension based on the silicone oil but slightly lower than that based on a hydrocarbon oil. Furthermore, the relaxation of the ER response after removal of the electric field was somewhat slow for the nano-suspension based on the hydrocarbon oil, whereas it was fairly well for the nano-suspension based on the modified silicone oil.

AB - Electro-rheological (ER) nano-suspensions based on titanium dioxide nano-particles with particle diameter on the order of 100 nm were prepared. Micro-gap flow behavior and microstructure were evaluated for the suspensions with a particle volume fraction of 8.8 vol%. For the nano-suspension based on a silicone oil, the ER effect and flow behavior were found to be stable during the sharing time on the order of 102 s. The ER response measured at a given strength of the electric field for the nano-suspension based on a chemically modified silicone oil was effectively induced by the electric field, especially with low strengths, and it was larger than that of the nano-suspension based on the silicone oil but slightly lower than that based on a hydrocarbon oil. Furthermore, the relaxation of the ER response after removal of the electric field was somewhat slow for the nano-suspension based on the hydrocarbon oil, whereas it was fairly well for the nano-suspension based on the modified silicone oil.

KW - Electro-rheology

KW - Micro-gap

KW - Microstructure

KW - Nano-particles

KW - Yield stress

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ER -

Development and micro-gap flow evaluation of electro-rheological nano-suspensions

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Keywords

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