摘要
We performed a THz absorption spectroscopy study on liquid water confined in mesoporous silica materials, MCM-41-S-18 and MCM-41-S-21, of two different pore sizes at room temperatures. We found that stronger confinement with a smaller pore size causes reduced THz absorption, indicating reduced water mobility due to confinement. Combined with recent theoretical studies showing that the microscopic structure of water inside the nanopores can be separated into a core water region and an interfacial water region, our spectroscopy analysis further reveals a bulk-water-like THz absorption behavior in the core water region and a solid-like THz absorption behavior in the interfacial water region.
原文 | 英語 |
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頁(從 - 到) | 2731-2734 |
頁數 | 4 |
期刊 | Optics Letters |
卷 | 40 |
發行號 | 12 |
DOIs | |
出版狀態 | 已發佈 - 2015 |
對外發佈 | 是 |
ASJC Scopus subject areas
- 原子與分子物理與光學