Investigation of the peculiar functional characteristics of hematite particle suspensions and development of the method of controlling the characteristic properties

2014 Fiscal Year Final Research Report

• Project/Area Number: 23360049
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Computational science
• Research Institution: Akita Prefectural University
• Principal Investigator: SATOH Akira 秋田県立大学, システム科学技術学部, 教授 (50211941)
• Co-Investigator(Kenkyū-buntansha): AOSHIMA Masayuki 秋田県立大学, システム科学技術学部, 助教 (20315625)
• Project Period (FY): 2011-04-01 – 2015-03-31
• Keywords: 磁性粒子サスペンション / 機能性サスペンション / ミクロ流体科学 / 凝集現象 / ヘマタイト粒子 / 逆磁気粘性効果 / ブラウン動力学法 / 配向特性

Outline of Final Research Achievements

We have investigated the effects of the various factors on the negative magneto-rheological properties of hematite particle suspensions theoretically and experimentally. Brownian dynamics simulations have been performed in order to investigate the relationship between the magneto-rheological properties and the phase change of aggregates. From the experimental study, we have verified that the negative magneto-rheological effect surely arises in an actual hematite particle suspension. From the theoretical analysis, we have developed the Brownian dynamics simulation method that takes into account the spin Brownian motion and clarified in detail the influence of the various factors on the negative magneto-rheological properties. From these studies, we have succeeded in obtaining the valuable information for controlling the negative magneto-rheological properties of hematite particle suspensions by means of an external magnetic and flow field.

Free Research Field

工学