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Open AccessArticle

Fabrication of Hollow Channels Surrounded by Gold Nanoparticles in Hydrogel by Femtosecond Laser Irradiation

1
School of Integrated Design Engineering, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
2
Department of Electronics and Electrical Engineering, Keio University, 3-14-1, Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
*
Author to whom correspondence should be addressed.
Nanomaterials 2020, 10(12), 2529; https://doi.org/10.3390/nano10122529
Received: 30 November 2020 / Revised: 14 December 2020 / Accepted: 16 December 2020 / Published: 16 December 2020
(This article belongs to the Special Issue Laser Synthesis of Nanomaterials)
The fabrication of hollow channels surrounded by gold nanoparticles in poly(ethylene glycol) diacrylate (PEGDA) is demonstrated. The absorption spectra show that gold nanoparticles were formed at the periphery of the focus by reduction of gold ions. The microscope observation and Raman spectroscopy analyses indicate that the center of the channels were void of PEGDA, which can be attributed to the femtosecond laser-induced degradation of the hydrogel. Since both the hydrogel and gold nanoparticles are biocompatible, this technique of fabricating hollow channels surrounded by gold nanoparticles is promising for tissue engineering, drug screening, and lab-on-a-chip devices. View Full-Text
Keywords: femtosecond laser; PEGDA; multiphoton reduction; gold nanoparticles; hollow channel femtosecond laser; PEGDA; multiphoton reduction; gold nanoparticles; hollow channel
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MDPI and ACS Style

Takayama, I.; Katayama, A.; Terakawa, M. Fabrication of Hollow Channels Surrounded by Gold Nanoparticles in Hydrogel by Femtosecond Laser Irradiation. Nanomaterials 2020, 10, 2529. https://doi.org/10.3390/nano10122529

AMA Style

Takayama I, Katayama A, Terakawa M. Fabrication of Hollow Channels Surrounded by Gold Nanoparticles in Hydrogel by Femtosecond Laser Irradiation. Nanomaterials. 2020; 10(12):2529. https://doi.org/10.3390/nano10122529

Chicago/Turabian Style

Takayama, Izumi; Katayama, Akito; Terakawa, Mitsuhiro. 2020. "Fabrication of Hollow Channels Surrounded by Gold Nanoparticles in Hydrogel by Femtosecond Laser Irradiation" Nanomaterials 10, no. 12: 2529. https://doi.org/10.3390/nano10122529

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