Hydrodynamically Adjustable Three-Dimensional Optofluidic Microlenses

5 Hydrodynamically Adjustable Three-Dimensional Optofluidic Microlenses 

Rosenauer et al. demonstrated another fluid manipulation approach (altering flow rates) to form an adjustable three dimensional (3D) optical lens with 

Relalionshijjs between flow rate ratio and focal length of liquid core and liquid cladding lens. The dimension of the focal length was normalized by the radius of the circular chamber, (a) Symmetrical double convex lens, (b) Planoconvex lens. (Source Song, C., N.T. Nguyen, S.H. Tan et al. 2009. Lab on a Chip, 9(9), 1178-1184. With permission.) 

The analyzed fluidic device design utilized three inlets for the lens body and cladding flows and one outlet. For each lens component, there were two more 90-degree curved channels. By combining the single arch channels, a transversal multiconvex lens was generated. The lens body and cladding fluid 

Optofluidic lens under combined effects of hydrodynamics and electro-osmosis. (Source Li, H., T. Wong, and N.T. Nguyen. 2011. Microfluidics and Nanofluidics, 10(5), 1033-1043. With permission.) 

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