Multiphoton fabrication of freeform polymer microstructures containing graphene oxide and reduced graphene oxide nanosheets

Chun Yu Lin, Ke Ming Hsu, Hsin Chieh Huang, Te Fu Yeh, Hsin Yu Chang, Chi Hsiang Lien, Hsisheng Teng, Shean Jen Chen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Three-dimensional freeform polymer microstructures containing graphene oxide (GO) nanosheets were fabricated via two-photon polymerization using Rose Bengal (RB) as the photoinitiator. To prevent photothermal damage in fabricated polymer structures and impede the reduction level in the GO nanosheets, the femtosecond laser dose was controlled as low as possible at the laser wavelength of 720 nm appropriate for superior two-photon absorption of RB. Furthermore, the GO nanosheets in the fabricated microstructure can be converted into reduced GO (rGO) by precisely increasing the laser power and controlling the desired reduction positions. In this manner, GO and rGO nanosheets contained in the designated areas of the fabricated microstructures can be achieved.

Original languageEnglish
Pages (from-to)218-226
Number of pages9
JournalOptical Materials Express
Volume5
Issue number2
DOIs
StatePublished - 1 Jan 2015

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