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ACS Nano. 2008 Nov 25;2(11):2257-62. doi: 10.1021/nn800451w.

Ultra-low shrinkage hybrid photosensitive material for two-photon polymerization microfabrication.

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1
Nanotechnology Department, Laser Zentrum Hannover eV, Hannover, Germany.

Abstract

Investigations into the structuring by two-photon polymerization of a nonshrinking, photosensitive, zirconium sol-gel material are presented. This hybrid material can be photostructured even when it contains up to 30 mol % of zirconium propoxide (ZPO); by varying the material's inorganic content, it is possible to modify and tune its refractive index. The introduction of ZPO significantly increases the photosensitivity of the resulting photopolymer. The fabricated three-dimensional photonic crystal structures demonstrate high resolution and a clear band-stop in the near-IR region. In contrast to common practice, no additional effort is required to precompensate for shrinkage or to improve the structural stability of the fabricated photonic crystals; this, combined with the possibility of tuning this material's optical, mechanical, and chemical properties, makes it suitable for a variety of applications by two-photon polymerization manufacturing.

PMID:
19206391
DOI:
10.1021/nn800451w
[Indexed for MEDLINE]
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