Abbreviated Journal Title
Focal Length Tunability; Lens; Polymer; Optics
Conventional liquid microlens arrays are facing bottlenecks in controlling droplet size and shape, and limited aperture ratio. We report a new liquid/solvent approach to overcome these obstacles for making uniform droplet array and achieving similar to 90% aperture ratio. The droplets are very stable due to the pinning effect of the polymer walls and substrate surfaces. Using the fabricated droplet array, we demonstrate a tunable-focus microlens array based on dielectrophoretic effect. The microlens array exhibits a large dynamic range and fast response time ( tens of milliseconds). Besides liquid microlens arrays, this fabrication method also opens a new door for making other tunable photonic devices.
Ren, Hongwen; Ren, Daqiu; and Wu, Shin-Tson, "A new method for fabricating high density and large aperture ratio liquid microlens array" (2009). Faculty Bibliography 2000s. 2048.