Fabrication of polymer microlens array with controllable focal length by modifying surface wettability

Optics Express
Qiao XuDawei Zhang

Abstract

A straightforward technique for fabricating low-cost microlens arrays with controllable focal length is developed. By harnessing and manipulating the interfacial energy between the liquid-state acrylate resin and the solidified polydimethylsiloxane (PDMS), the surface of the acrylate resin in the PDMS microhole presents a spherical shape and the curvature can be flexibly controlled. With the change of the processing time for the surface modification of the PDMS microholes, the focal length of the concave microlenses varies from -296.3 μm to -67.4 μm. The numerical aperture of 0.45 is realized. The focal length and the aperture of the microlenses are also affected by the diameter of the microholes. The fabricated concave microlens array can be employed as a master to further duplicate convex microlens array. A good image quality can be achieved by using the convex microlens arrays.

References

Dec 16, 1998·Journal of Colloid and Interface Science·A AmirfazliA W Neumann
May 31, 2006·Langmuir : the ACS Journal of Surfaces and Colloids·Valessa BarbierPatrick Tabeling
Jul 12, 2007·Journal of the American Chemical Society·Feng ZhangMatthew R Linford
Nov 23, 2007·Optics Letters·H Arimoto, B Javidi
May 14, 2007·Optics Express·Frank WippermannStefan Sinzinger
Dec 10, 2009·Optics Express·Anurag TripathiNikos Chronis
Apr 1, 1988·Applied Optics·Z D PopovicG A Connell
Sep 28, 2013·ACS Applied Materials & Interfaces·Jiale YongXun Hou
Jan 24, 2015·ACS Applied Materials & Interfaces·Hyukjin Jung, Ki-Hun Jeong
Nov 13, 2015·Optics Express·Evaldas StankevičiusGediminas Račiukaitis
Jan 15, 2016·Optics Letters·Chaolong FangDawei Zhang
Jun 24, 2016·ACS Applied Materials & Interfaces·Camilo FlorianMartí Duocastella
Aug 10, 2017·Optics Express·Pin-Chuan ChenGeo-Ry Tang

❮ Previous
Next ❯

Citations

Apr 1, 2020·Optics Express·Yan LiangHongxing Wang
May 15, 2021·Microscopy Research and Technique·Shuxiang CaiLianqing Liu
Jan 17, 2020·ACS Applied Materials & Interfaces·Miao XuHongbo Lu

❮ Previous
Next ❯

Related Concepts

Related Feeds

Cell Imaging in CNS

Here is the latest research on cell imaging and imaging modalities, including light-sheet microscopy, in the central nervous system.