skip to main content


Title: Direct Laser Writing of Magneto-Photonic Sub-Microstructures for Prospective Applications in Biomedical Engineering

Here, 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 ( Fe 3O 4) nanoparticles and a commercial SU-8 photoresist. The magnetic nanocomposite was synthesized by mixing Fe 3O 4 nanoparticles with different kinds of SU-8 photoresists. We demonstrated that the degree of dispersion of Fe 3O 4 nanoparticles in the nanocomposite depended on the concentration of Fe 3O 4 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 Fe 3O 4 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 Fe 3O 4 nanoparticles. The magneto-photonic 2D and 3D structures with sizes as small as 150 nm were created. Finally, we demonstrated the strong magnetic field responses of the magneto-photonic nanostructures and their use as micro-actuators when immersed in a liquid solution. View Full-Text
 [1] ;  [2] ;  [3] ;  [2] ;  [2] ;  [4] ;  [1]
  1. Univ. Paris-Saclay, Cachan (France). Laboratoire de Photonique Quantique et Moleculaire
  2. Hanoi National Univ. of Education, Cau Giay, Hanoi (Vietnam). Faculty of Physics
  3. Univ. Paris-Saclay, Cachan (France). Laboratoire de Photonique Quantique et Moleculaire; Vietnam Academy of Science and Technology, Hanoi (Vietnam). Inst. of Materials Science
  4. Univ. of South Florida, Tampa, FL (United States). Dept. of Physics
Publication Date:
Grant/Contract Number:
FG02-07ER46438; 03.03-2015.78
Accepted Manuscript
Journal Name:
Additional Journal Information:
Journal Volume: 7; Journal Issue: 12; Journal ID: ISSN 2079-4991
Research Org:
Univ. of South Florida, Tampa, FL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; French National Research Agency (ANR)
Country of Publication:
United States
36 MATERIALS SCIENCE; magnetic nanocomposite; magneto-photonic microstructures; one-photon absorption direct laser writing
OSTI Identifier: