Si quantum dots enhanced hydrogen bonds networks of liquid water in a stimulated Raman scattering process

被引：10

作者：

Wang, Ping ^{[1
]}

Li, Fabing ^{[1
]}

Li, Zhanlong ^{[1
]}

Sun, Chenglin ^{[2
]}

Men, Zhiwei ^{[1
]}

机构：

[1] Jilin Univ, Coll Phys, Coherent Light & Atom & Mol Spect Lab, Changchun 130012, Jilin, Peoples R China

[2] Jilin Univ, Coll Phys, Key Lab Phys & Technol Adv Batteries, Changchun 130012, Jilin, Peoples R China

来源：

OPTICS LETTERS | 2019年 / 44卷 / 14期

基金：

中国国家自然科学基金;

关键词：

SILICON; ADSORPTION; MOLECULES;

D O I：

10.1364/OL.44.003450

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Stimulated Raman scattering (SRS) of silicon quantum dots (Si QD) water solutions of different sizes (2 and 5 nm) are investigated using Nd:YAG laser. Since strong and weak hydrogen bonds are formed by the charge transfer between water molecules and Si QDs, two SRS peaks of OH stretching vibrations of Si QDs solutions are observed in the forward direction. Simultaneously, characteristic feature peaks related to the interaction between OH groups and excess electrons are obtained in the backward SRS of 2 nm Si QDs solutions. The excess electrons induce a strong electrostatic field, leading to the transformation from water to an ice-VIII structure. (C) 2019 Optical Society of America

引用

页码：3450 / 3453

页数：4

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