Aging and violation of fluctuation dissipation theorem in colloidal systems

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K13868
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Biological physics/Chemical physics/Soft matter physics
• Research Institution: Ritsumeikan University
• Principal Investigator: Fukao Koji 立命館大学, 理工学部, 教授 (50189908)
• Co-Investigator(Kenkyū-buntansha): 瀧川 佳紀 立命館大学, 理工学部, 助教 (20755483)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: マイクロレオロジー / 粘度 / ラポナイト / 揺動散逸定理 / アクティブ / パッシブ

Outline of Final Research Achievements

A microrheology system has been developed in order to observe the violation of fluctuation dissipation theorems. Using this microrheology system, the viscosity of Laponite suspension systems could be observed during the aging process at room temperature. This observation suggests that the microrheology system can be used to determine the validity of the fluctuation dissipation theorem. In near future, this measurements will be done under shear flow.

Free Research Field

ソフトマター物理学