2017 Fiscal Year Final Research Report
Water in confined geometry of carbon nanotubes: pressure-dependent properties and a wet-dry transition
Project/Area Number |
15K17738
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Biological physics/Chemical physics/Soft matter physics
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Research Institution | Kanagawa University |
Principal Investigator |
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Project Period (FY) |
2015-04-01 – 2018-03-31
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Keywords | 水のナノサイエンス / カーボンナノチューブ / 疎水性/親水性 / 液体-液体転移 |
Outline of Final Research Achievements |
Confined water inside single-walled carbon nanotubes (SWCNTs) of diameters moere than 1.45 nm was studied by several experimental methods such as x-ray diffraction experiments and NMR measurements, and molecular dynamics calculations. The findings are as follows: (1) The mechanism for a wet-dry transition of the confined water was suggested. (2) The confined water continues fast molecular rotation until ca. 220 K. (3) Upon cooling below 220 K, the confined water undergoes a discontinuous transition at Tc which is dependent on the SWCNT diameters. These results provide new insights into the properties of confined water inside hydrophobic pores, but also contain information for further studies into the unsolved properties of bulk water.
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Free Research Field |
物性物理学実験、ナノサイエンス
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