Anomalous slowing down of the vibrational relaxation of liquid water upon nanoscale confinement

被引：113

作者：

Dokter, AM ^{[1
]}

Woutersen, S ^{[1
]}

Bakker, HJ ^{[1
]}

机构：

[1] FOM, Inst Atom & Mol Phys AMOLF, Amsterdam, Netherlands

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 94卷 / 17期

关键词：

D O I：

10.1103/PhysRevLett.94.178301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the vibrational dynamics of nanodroplets of liquid water with femtosecond two-color midinfrared pump-probe spectroscopy. For the smallest nanodroplet, containing 10-15 water molecules, the lifetime T-1 of the O-H stretch vibrations is equal to 0.85± 0.1 ps, which is more than 3 times as long as in bulk liquid water. We find that the truncation of the hydrogen-bond network of water leads to a dramatic change of the relaxation mechanism.

引用

页数：4

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