Ferrofluid-molding method for polymeric microlens arrays fabrication
| Autor: | Yi Hsin Chen, Chiun-Peng Lee, Mei Feng Lai |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Microlens
Ferrofluid Materials science Fabrication business.industry Astrophysics::Instrumentation and Methods for Astrophysics Molding (process) Condensed Matter Physics Computer Science::Other Electronic Optical and Magnetic Materials Magnetic field Numerical aperture Radius of curvature (optics) Physics::Fluid Dynamics Optics Materials Chemistry Focal length Optoelectronics Astrophysics::Earth and Planetary Astrophysics business |
| Zdroj: | Microfluidics and Nanofluidics. 16:179-186 |
| ISSN: | 1613-4990 1613-4982 |
| Popis: | This study proposes a method named as ferrofluid-molding method for polymer microlens array fabrication. In this method, the master of the mother mold for microlens molding is an array of ferrofluid droplets. We generated droplet arrays by inducing the droplet’s magnetic hydrodynamic instability under different magnetic fields, and used the field-dependent droplet dimensions to fabricate numerous mold cavities. By this we could fabricate arrays of microlens with different bottom area, height, radius of curvature, and focal length. From our analysis, all the fabricated microlens arrays possessed good uniformity, and the largest numerical aperture of our microlens array was found as 0.54. In addition, we also designed a light uniformity experiment to demonstrate a potential application of our microlens arrays. |
| Databáze: | OpenAIRE |
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