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Dielectrophoresis-actuated in-plane optofluidic lens with tunability of focal length from negative to positive
Chen, Qingming1,2; Li, Tenghao1,2; Zhu, Yujiao1,2; Yu, Weixing3; Zhang, Xuming1,2
Department光谱成像技术实验室
2018-03-19
Source PublicationOPTICS EXPRESS
ISSN1094-4087
Volume26Issue:6Pages:6532-6541
Contribution Rank3
Abstract

This paper reports a tunable in-plane optofluidic lens by continuously tuning a silicone oil-air interface from concave to convex using the dielectrophoresis (DEP) force. Two parallel glasses are bonded firmly on two sides by NOA 81(Norland Optical Adhesive 81) spacers, forming an open microfluidic channel. An ITO (indium tin oxide) strip and another unpatterned ITO layer are deposited on two glasses as the top and bottom electrodes. Initially, a capillary concave liquid-air interface is formed at the end of the open channel. Then the DEP force is enabled to continuously deform the interface (lens) from concave to convex. In the experiment, the focal length gradually decreases from about -1 mm to infinite and then from infinite to around + 1 mm when the driving voltage is increased from 0 V to 260 V. Particularly, the longitudinal spherical aberration (LSA) is effectively suppressed to have LSA < 0.04 when the lens is operated in the focusing state. This work is the first study of in-plane tunable lenses using the DEP force and possesses special merits as compared to the other reported tunable lenses that are formed by pumping different liquids or by temperature gradient, such as wide tunability, no need for continuous supply of liquids, low power consumption (similar to 81 nJ per switching) due to the capacitor-type driving, and the use of only one type of liquid. Besides, its low aberration makes it favorable for light manipulation in microfluidic networks. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1364/OE.26.006532
Indexed BySCI ; EI
WOS KeywordLiquid Lens ; Wave-guides ; Water-purification ; Flow Cytometer ; Microlens ; Light ; Reactors ; Droplet
Language英语
WOS Research AreaOptics
Funding OrganizationNational Natural Science Foundation of China(61377068 ; Research Grants Council (RGC) of Hong Kong(N_PolyU505/13 ; Hong Kong Polytechnic University(G-YBPR ; 61361166004) ; PolyU 152184/15E ; 4-BCAL ; PolyU 152127/17E) ; 1-ZE14 ; 1-ZE27 ; 1-ZVGH)
WOS SubjectOptics
WOS IDWOS:000427900400019
EI Accession Number20181204931572
Citation statistics
Document Type期刊论文
Identifierhttp://ir.opt.ac.cn/handle/181661/30007
Collection光谱成像技术实验室
Affiliation1.Hong Kong Polytech Univ, Dept Appl Phys, Hong Kong, Hong Kong, Peoples R China
2.Hong Kong Polytech Univ, Shenzhen Res Inst, Shenzhen 518057, Peoples R China
3.Chinese Acad Sci, Xian Inst Opt & Precis Mech, Key Lab Spectral Imaging Technol, Xian 710119, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Chen, Qingming,Li, Tenghao,Zhu, Yujiao,et al. Dielectrophoresis-actuated in-plane optofluidic lens with tunability of focal length from negative to positive[J]. OPTICS EXPRESS,2018,26(6):6532-6541.
APA Chen, Qingming,Li, Tenghao,Zhu, Yujiao,Yu, Weixing,&Zhang, Xuming.(2018).Dielectrophoresis-actuated in-plane optofluidic lens with tunability of focal length from negative to positive.OPTICS EXPRESS,26(6),6532-6541.
MLA Chen, Qingming,et al."Dielectrophoresis-actuated in-plane optofluidic lens with tunability of focal length from negative to positive".OPTICS EXPRESS 26.6(2018):6532-6541.
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