Direct Laser Writing of Magneto-Photonic Sub-Microstructures for Prospective Applications in Biomedical Engineering
Laboratoire de Photonique Quantique et Moléculaire, UMR 8537, École Normale Supérieure de Cachan, Centrale Supélec, CNRS, Université Paris-Saclay, 61 avenue de Président Wilson, 94235 Cachan, France
Faculty of Physics, Hanoi National University of Education, 136 Xuan Thuy, Cau Giay, 100000 Hanoi, Vietnam
Institute of Materials Science, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, 100000 Hanoi, Vietnam
Department of Physics, University of South Florida, Tampa, FL 33620, USA
Author to whom correspondence should be addressed.
Academic Editor: Thomas Nann
Received: 6 December 2016 / Revised: 2 May 2017 / Accepted: 4 May 2017 / Published: 9 May 2017
We report on the fabrication of desired magneto-photonic devices by a low one-photon absorption (LOPA) direct laser writing (DLW) technique on a photocurable nanocomposite consisting of magnetite (
) nanoparticles and a commercial SU-8 photoresist. The magnetic nanocomposite was synthesized by mixing
nanoparticles with different kinds of SU-8 photoresists. We demonstrated that the degree of dispersion of
nanoparticles in the nanocomposite depended on the concentration of
nanoparticles, the viscosity of SU-8 resist, and the mixing time. By tuning these parameters, the most homogeneous magnetic nanocomposite was obtained with a concentration of about 2 wt % of
nanoparticles in SU-8 2005 photoresist for the mixing time of 20 days. The LOPA-based DLW technique was employed to fabricate on demand various magneto-photonic submicrometer structures, which are similar to those obtained without
nanoparticles. The magneto-photonic 2D and 3D structures with sizes as small as 150 nm were created. We demonstrated the strong magnetic field responses of the magneto-photonic nanostructures and their use as micro-actuators when immersed in a liquid solution.
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MDPI and ACS Style
Au, T.H.; Trinh, D.T.; Tong, Q.C.; Do, D.B.; Nguyen, D.P.; Phan, M.-H.; Lai, N.D. Direct Laser Writing of Magneto-Photonic Sub-Microstructures for Prospective Applications in Biomedical Engineering. Nanomaterials 2017, 7, 105.
Au TH, Trinh DT, Tong QC, Do DB, Nguyen DP, Phan M-H, Lai ND. Direct Laser Writing of Magneto-Photonic Sub-Microstructures for Prospective Applications in Biomedical Engineering. Nanomaterials. 2017; 7(5):105.
Au, Thi H.; Trinh, Duc T.; Tong, Quang C.; Do, Danh B.; Nguyen, Dang P.; Phan, Manh-Huong; Lai, Ngoc D. 2017. "Direct Laser Writing of Magneto-Photonic Sub-Microstructures for Prospective Applications in Biomedical Engineering." Nanomaterials 7, no. 5: 105.
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