Characterization of a polymer microlens fabricated by use of the hydrophobic effect

Daniel M. Hartmann, Osman Kibar, Sadik C. Esener

Research output: Contribution to journalArticlepeer-review

72 Scopus citations


We report a means of fabricating hydrophilic domains in a hydrophobic background by lithographically patterning an adhesive hydrophobic layer. Polymer microlenses were fabricated on these substrates by use of a dip-coating technique. Various lens shapes (circular, elliptical, square) were fabricated on a variety of substrates (SiO2, SiN, GaAs, InP, etc.), ranging in size from 2 to 500 μm in diameter, with fill factors of up to 90%. Plano-convex and double-convex lenses were fabricated, with f-numbers as low as 1.38 and 1.2, respectively. Optimum lens surfaces deviated from spherical by just ±5nm. The lenses are stable at room temperature and exhibit minimal degradation after 24 h at 105 °C. The transfer of these polymer lenses to an underlying substrate was also demonstrated.

Original languageEnglish (US)
Pages (from-to)975-977
Number of pages3
JournalOptics Letters
Issue number13
StatePublished - Jul 1 2000
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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