Optofluidic lens with low spherical and low field curvature aberrations

H. T. Zhao, Y. Yang, L. K. Chin, H. F. Chen, W. M. Zhu, J. B. Zhang, P. H. Yap, B. Liedberg, K. Wang, G. Wang, W. Ser, A. Q. Liu

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)


This paper reports an optofluidic lens with low spherical and low field curvature aberrations through the desired refractive index profile by precisely controlling the mixing between ethylene glycol and deionized water in an optofluidic chip. The experimental results demonstrate that the spherical aberration is reduced to 19.5 μm and the full width at half maximum of the focal point is 7.8 μm with a wide divergence angle of 35 degrees. In addition, the optofluidic lens can focus light at different off-axis positions on the focal plane with Δx′ < 6.8 μm and at opposite transverse positions with Δy - Δy′ < 5.7 μm. This is the first demonstration of a special optofluidic lens that significantly reduces both the spherical and field curvature aberrations, which enhances the focusing power and facilitates multiple light source illumination using a single lens. It is anticipated to have high potential for applications such as on-chip light manipulation, sample illumination and multiplexed detection.

Original languageEnglish
Pages (from-to)1617-1624
Number of pages8
JournalLab on a Chip
Issue number9
Publication statusPublished - Jan 1 2016

ASJC Scopus subject areas

  • Bioengineering
  • Biochemistry
  • General Chemistry
  • Biomedical Engineering


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