2005
DOI: 10.1021/la046996z
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Abstract: Microporous polymer films with a hexagonal arrangement of pores were prepared by simple casting of various polymer solutions under humid conditions. Hexagonally packed micropores were prepared by using condensed water droplets as templates on the surface of polymer solutions. Spherical micro lens arrays (MLAs) were fabricated simply by molding from the resulting honeycomb structures. By peeling off the upper layer with adhesive tape, the pillars were severed, forming pins on each layer, and a hexagonal array o… Show more

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Cited by 252 publications
(186 citation statements)
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“…The formation of hierarchically-ordered arrays in polymer fibers is of interest because of potential applications in photonic band-gap materials, sensors, and patterned light-emitting diodes [160][161][162][163][164]. These patterned arrays also increase the roughness of the material, which, according to the Cassie-Baxter law, affects the wettability or water contact angle of the surface because it is governed by both the surface energy and roughness [165].…”
Section: Nanoporesmentioning
confidence: 99%
“…The formation of hierarchically-ordered arrays in polymer fibers is of interest because of potential applications in photonic band-gap materials, sensors, and patterned light-emitting diodes [160][161][162][163][164]. These patterned arrays also increase the roughness of the material, which, according to the Cassie-Baxter law, affects the wettability or water contact angle of the surface because it is governed by both the surface energy and roughness [165].…”
Section: Nanoporesmentioning
confidence: 99%
“…26 The simplicity of the breath figure pattern formation has led to the preparation of ordered porous films using a wide variety of polymers. Yabu and co-workers 7 recently prepared spherical and hemispherical micro lens arrays (MLAs) using honeycomb templates of poly(dimethylsiloxane) (PDMS) fabricated using the solvent evaporation method and the hemispherical MLAs exhibited improved projection properties relative to the spherical MLAs. In another study, 8 honeycomb structures were prepared using six-arm star polystyrene (PS), and a strong correlation between the number of arms, arm length, end-group functionality, and pore diameter were demonstrated.…”
Section: Introductionmentioning
confidence: 99%
“…By contrast, the selforganization technique, commonly used for preparing masks or templates [27−29] , has provided a new way for fabricating MLAs with low cost and simple procedure. For example, Yabu et al [30] have reported the preparation of hexagonally packed micropores structure by using self-assembled condensed water droplets as templates. Spherical MLAs have been successfully fabricated by directly molding from the resulting 'honeycomb' structure.…”
Section: Microlens Arrays Prepared Via Colloidal Microsphere Templatingmentioning
confidence: 99%