期刊
JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS
卷 6, 期 4, 页码 330-337出版社
IOP PUBLISHING LTD
DOI: 10.1088/1464-4258/6/4/007
关键词
polymer optical fibres; polymer waveguides; polymer micro-lens arrays; refractive index; mechanical properties; hardness; elastic modulus; glass transition temperature; surface energy
类别
Various all-liquid fabrication strategies to construct polymer micro-lens arrays on glass substrates are presented. Wettability patterns were made on glass substrates and a monomer was deposited selectively on circular domains on the substrate by making use of the hydrophobic effect, resulting in liquid micro-lenses. The liquid micro-lenses were solidified by polymerization. Three different variations of the selective wetting process were developed. The polymer micro-lenses were characterized extensively by optical methods: focal length, surface roughness and optical aberrations of the lenses were determined by scanning white light interferometry. Due to their fabrication from the liquid phase, the root-mean-square surface roughness of the micro-lenses is between 10 and 35 nm, i.e. better than 1/10 wavelength. These measurements allowed comparison of the quality of lenses fabricated by these techniques.
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