Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 13, Issue 30, Pages 36295-36306Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.1c08652
Keywords
cylindrical microlens array; 3D printing; PDMS microlens array; electric-field-driven 3D printing; high fill-factor
Funding
- National Natural Science Foundation of China [51705271, 51775288]
- Support Plan for Outstanding Youth Innovation Team in Universities of Shandong Province, China [2020KJB003]
- Natural Science Foundation of Shandong Province, China [ZR2020ZD04]
- Key Research and Development Plan of Shandong Province [2019GGX104060]
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The study introduces a method for efficiently manufacturing CMLAs with a high fill-factor using electric-field-driven microscale 3D printing of PDMS. By adjusting printing parameters, the profile and fill-factor of CMLAs can be controlled to enhance their optical performance. The results show good morphology and optical properties of the prepared CMLAs, suggesting a potential cost-effective route for manufacturing large-area CMLAs.
Cylindrical microlens arrays (CMLAs) play a key role in many optoelectronic devices, and 100% fill-factor CMLAs also have the advantage of improving the signal-to-noise ratio and avoiding stray-light effects. However, the existing preparation technologies are complicated and costly, which are not suitable for mass production. Herein, we propose a simple, efficient, and low-cost manufacturing method for CMLAs with a high fill-factor via the electric- field-driven (EFD) microscale 3D printing of polydimethylsiloxane (PDMS). By adjusting the printing parameters, the profile and the fill-factor of the CMLAs can be controlled to improve their optical performance. The optical performance test results show that the printed PDMS CMLAs have good image-projecting and light-diffraction properties. Using the two printing modes of this EFD microscale 3D-printing technology, a cylindrical dual-microlens array with a double-focusing function is simply prepared. At the same time, we print a series of specially shaped microlenses, proving the flexible manufacturing capabilities of this technology. The results show that the prepared CMLAs have good morphology and optical properties. The proposed method may provide a viable route for manufacturing large-area CMLAs with 100% fill-factor in a very simple, efficient, and low-cost manner.
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