Charged fluorophores-assisted fabrication of metallic structures inside hydrogel by multi-photon photoreduction

Manan Machida; Weilu Shen; Hiroaki Onoe; Alexander Heisterkamp; Eric Mazur; Mitsuhiro Terakawa

doi:10.1117/12.2578247

5 March 2021 Charged fluorophores-assisted fabrication of metallic structures inside hydrogel by multi-photon photoreduction

Manan Machida, Weilu Shen, Hiroaki Onoe, Alexander Heisterkamp, Eric Mazur, Mitsuhiro Terakawa

Author Affiliations +

Proceedings Volume 11676, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XXI; 116760R (2021) https://doi.org/10.1117/12.2578247
Event: SPIE LASE, 2021, Online Only

Abstract

We demonstrated the fabrication of gold microstructures inside a PEG-based hydrogel with different charged fluorophores by multi-photon photoreduction. By adding an anionic charged FITC-dextran or a cationic charged Rhodamine110 to the metal ion solution, line width of the fabricated gold microstructures increased compared to that of the structures fabricated in fluorophore-free hydrogel. The photobleaching could enhanced the reduction of gold ions accompanying the oxidation of the fluorophores. Notably, the inhibition of reduction of gold ions at a site other than the focal point was observed with FITC-dextran, which may be attributable to the coordination of gold ions to FITC-dextran.

Conference Presentation

Citation Download Citation

Manan Machida, Weilu Shen, Hiroaki Onoe, Alexander Heisterkamp, Eric Mazur, and Mitsuhiro Terakawa "Charged fluorophores-assisted fabrication of metallic structures inside hydrogel by multi-photon photoreduction", Proc. SPIE 11676, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XXI, 116760R (5 March 2021); https://doi.org/10.1117/12.2578247

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