Using ink-jet printing and coffee ring effect to fabricate refractive microlens arrays

Fang-Chung Chen*, Jhih Ping Lu, Wen Kuei Huang

*Corresponding author for this work

Research output: Contribution to journalArticle

27 Scopus citations

Abstract

We developed an ink-jet printing process to fabricate microlens arrays (MLAs) by creating microwell structures based on the "coffee ring effect"to confine the lenses' materials on the substrates. After O2 and CF4 plasma treatment, the MLAs exhibited well-confined patterns with distinct ridge boundaries possessing repellent surfaces. Further, through appropriate control over the printing of the multidrops and the printhead temperature, we obtained optical microlens with different f-numbers. This fabrication method is a simple, shape-controllable, and material-saving approach compared to the traditional fabrication process.

Original languageEnglish
Pages (from-to)648-650
Number of pages3
JournalIEEE Photonics Technology Letters
Volume21
Issue number10
DOIs
StatePublished - 15 May 2009

Keywords

  • Fabrication
  • Films
  • Ink-jet printing (IJP)
  • Lenses
  • Microoptics
  • Optical device fabrication
  • optical refraction
  • Printing
  • Solvents

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