| 50Hz交流电控制的可变焦液体透镜 |
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| 引用本文： | 陈陶,梁忠诚,徐荣青.50Hz交流电控制的可变焦液体透镜[J].激光与光电子学进展,2012(4):75-77. |
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| 作者姓名： | 陈陶 梁忠诚 徐荣青 |
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| 作者单位： | 南京邮电大学光电工程学院微流控光学技术研究中心 |
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| 基金项目： | 国家自然科学基金(60878037,60977069);江苏省自然科学基金(BK2009424)资助课题 |
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| 摘 要： | 研究了采用"金属导电基底/Parylene介电层/Teflon疏水层"透镜内芯材料的介电上电润湿(EWOD)特性。实验获得了导电液滴分别在直流电(DC)和50Hz交流电(AC)控制下的接触角随电压变化的曲线。实验结果表明,为达到DC电源控制下的液滴的EWOD相同效果,使用低频的AC电压应考虑其瞬时最大值而不是有效值(均方根值)。目前已经制作出基于50Hz交流电控制的可变焦液体透镜并进行加电压变焦实验。给出了该液体透镜的焦距与电压之间的变化曲线,实验结果与上述分析一致。
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| 关 键 词： | 测量 液体变焦透镜 交流电 低频 瞬时最大值 |
Variable-Focus Liquid Lens Controlled by 50 Hz AC Electric Field |
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| Chen Tao Liang Zhongcheng Xu Rongqing.Variable-Focus Liquid Lens Controlled by 50 Hz AC Electric Field[J].Laser & Optoelectronics Progress,2012(4):75-77. |
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| Authors: | Chen Tao Liang Zhongcheng Xu Rongqing |
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| Affiliation: | Chen Tao Liang Zhongcheng Xu Rongqing(Center of Optofluidic Technology,College of Optoelectronic Engineering,Nanjing University of Posts and Telecommunications,Nanjing,Jiangsu 210003 China) |
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| Abstract: | The property of electrowetting on dielectric(EWOD) on the core-surface of variable-focus liquid lens with specific "conductive metal/insulation film/hydrophobic" material is one of the important research topics in optofluidics.Contact angle versus applied voltage(DC and AC) curve of conductive liquid droplets is obtained by experiment.Experimental results show that,to achieve the same effect as that obtained with DC power,what should be considered is the instantaneous maximum rather than the effective value(root-mean-square) when using low-frequency AC voltage.The variable-focus experiment of the variable-focus lens under the applied 50 Hz AC voltage is performed.A curve between the focal length of the variable-focus lens and the applied voltage is given.The experiment result agrees very well with the above analysis. |
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| Keywords: | measurement variable-focus liquid lens AC low frequency instantaneous maximum |
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