铌酸锂基表面活性剂辅助的水合液滴光伏输运研究

人工晶体学报 ›› 2024, Vol. 53 ›› Issue (3): 472-479.

• “铌酸锂集成光子学”专栏 • 上一篇下一篇

铌酸锂基表面活性剂辅助的水合液滴光伏输运研究

师丽红¹, 高作轩², 阎文博²

1.天津城建大学理学院,天津 300384;
2.河北工业大学材料科学与工程学院,电工装备可靠性与智能化国家重点实验室,天津 300130

收稿日期:2024-01-09 发布日期:2024-04-02
通信作者: 阎文博,博士,研究员。E-mail:yanwenbo@hebut.edu.cn
作者简介:师丽红(1979—),女,河北省人,博士,副教授。E-mail:shilihong@tcu.edu.cn
基金资助:
国家自然科学基金(12174083);教育部“春晖计划”合作科研项目(HZKY20220246);中央引导地方科技发展资金项目(226Z2001G)

Photovoltaic Transportation of Surfactant-Mediated Aqueous Microdroplets on LiNbO₃ Platform

SHI Lihong¹, GAO Zuoxuan², YAN Wenbo²

1. Department of Physics, Tianjin Chengjian University, Tianjin 300384, China;
2. State Key Laboratory of Reliability and Intelligence of Electrical Equipment, School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, China

Received:2024-01-09 Published:2024-04-02

摘要/Abstract

摘要： 本文提出了一种利用表面活性剂辅助的水合液滴光伏输运方法。该方法通过油/水/铌酸锂界面上非离子表面活性剂(Span 80)的自组装分子层,将光伏电荷隔离。利用表面活性剂分子层提供的强静电操控力、低操控阻力和高操控稳定性,使用微瓦级低功率激光束实现了飞升级单个水合液滴的光伏输运。实验结果显示,水合液滴对光伏电场的响应可分为三种状态:无响应、排斥和吸引。随着表面活性剂浓度的增加,水合液滴的驱动机制从库伦排斥转变为适用于光伏输运的介电泳吸引。光伏电场驱动水合液滴(介电泳吸引)所需的最小激光功率与NaCl溶质浓度有关。

关键词: 光流控, 光操控, 铌酸锂, 光伏效应, 表面活性剂

Abstract: A method of surfactant-mediated photovoltaic transportation is proposed in this paper, the surfactant (span 80) layers self-assembled at the water-oil and oil-LN interfaces are employed to isolate photovoltaic charges in this method. The reduced electrostatic attenuation, remarkable hydrophobicity, and strong electrical breakdown suppression of the surfactant layers enable the stable and swift transportation of fL-scale aqueous microdroplets using μW-level laser in an oil medium. Three kinds of microdroplet responses to the laser illumination (unresponsive, repulsive and attractive cases) was found. With the increase of surfactant concentration, the driving mechanism can transit from the coulomb repulsion to the dielectrophoretic attraction that facilitates the photovoltaic transportation. Besides, the minimal laser power required for the attractive response was found correlated with the NaCl concentration inside the microdroplet.

Key words: optofluidic, optical manipulation, lithium niobate, photovoltaic effect, surfactant

中图分类号:

O439

师丽红, 高作轩, 阎文博. 铌酸锂基表面活性剂辅助的水合液滴光伏输运研究[J]. 人工晶体学报, 2024, 53(3): 472-479.

SHI Lihong, GAO Zuoxuan, YAN Wenbo. Photovoltaic Transportation of Surfactant-Mediated Aqueous Microdroplets on LiNbO₃ Platform[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2024, 53(3): 472-479.

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铌酸锂基表面活性剂辅助的水合液滴光伏输运研究

Photovoltaic Transportation of Surfactant-Mediated Aqueous Microdroplets on LiNbO₃ Platform

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铌酸锂基表面活性剂辅助的水合液滴光伏输运研究

Photovoltaic Transportation of Surfactant-Mediated Aqueous Microdroplets on LiNbO3 Platform

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Photovoltaic Transportation of Surfactant-Mediated Aqueous Microdroplets on LiNbO₃ Platform