2016 Fiscal Year Final Research Report
New approach to dielectric relaxation of nanometer-scale systems
| Project/Area Number |
26390069
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Thin film/Surface and interfacial physical properties
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| Research Institution | Kansai Medical University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 原子間力顕微鏡 / ソフトマター / 緩和 / 粘弾性 |
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| Outline of Final Research Achievements |
Viscoelasticity and dielectric relaxation of nanometer-scale soft-matter systems were studied by using atomic force microscopy technique. In the former research a marked non-Newtonian character of nanoconfined water between hydrophilic surfaces was reported. A remarkably discrete dependence of relaxation time of hydrated biopolymer that differs strikingly from macroscopic non-Newtonian behavior was also discovered. Its thorough analysis will provide a new subject of forthcoming new research. On the other hand, a dielectric relaxation profile of polymer thin film curiously different from a plausible relaxation function was obtained in relaxation measurement by modulating polarization of AFM probe via external electric field. It suggests necessity of remodeling the probe-sample system for more appropriate analysis of dielectric relaxation in the present method.
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| Free Research Field |
表面・界面物理学
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