Study of Crystallization of H2O molecules on Well-defined Oxide Surfaces
| Project/Area Number |
26600024
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Nanomaterials chemistry
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| Research Institution | Japan Advanced Institute of Science and Technology |
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Principal Investigator |
SASAHARA Akira 北陸先端科学技術大学院大学, マテリアルサイエンス研究科, 研究員 (40321905)
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 固液界面 / 酸化物 / 二酸化チタン / 走査トンネル顕微鏡 / 水 / 結晶成長 / 原子間力顕微鏡 |
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| Outline of Final Research Achievements |
The aim of this study is to fabricate H2O crystals by using atomically well-defined oxide surfaces as atomic scale templates. By applying a high electric field to the template surfaces in water, H2O crystals with non-equilibrium structures may be obtained. It was found that the titanium dioxide (110)-(1×1) surface prepared in ultrahigh vacuum (UHV) maintained its atomic structure in laboratory air and water. The (1×1) surface is therefore a promising candidate for the template. When the (1×1) surfaces exposed to the humid environments were reintroduced to UHV, hydroxyl groups, hydroperoxyl groups, and O adatoms were present on the surfaces. These surface species were concluded to be formed by dissociation of H2O molecules coordinated to the (1×1) surface. The identification of the evacuation-induced species opens the door to the characterization of the (1×1) surfaces in aqueous solutions by surface-sensitive techniques in UHV.
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Report
(3 results)
Research Products
(9 results)
