Creating 3D printed magnetic nanoparticle soft actuator
Magnetic programming of 4D printed shape memory composite structures
Source: Zhang, Fenghua, Linlin Wang, Zhichao Zheng, Yanju Liu, and Jinsong Leng, "Magnetic programming of 4D printed shape memory composite structures" Elsevior (2019): 105571
• Properties of filaments composites were analyzed by
1)differential scanning calorimeter 2)thermogravimetric analysis (TGA) 3)FT-IR 4)dynamic mechanical analyzer (DMA) 5)SEM
• Printing structures by FDM
• Material: PLD/ Iron oxide (Fe_3O_4)
• Notes on the preparation of magnetic filaments of iron oxide and PLA composites using a thermally controlled extruder
• The actuation mechanism is through temperature increase and shape change, temperature increase happens as the vibration magnetic particles inside the alternating magnetic field at 27.5 KHz
Magnetic programming of 4D printed shape memory composite structures
Source: Zhu, Wei, Jinxing Li, Yew J. Leong, Isaac Rozen, Xin Qu, Renfeng Dong, Zhiguang Wu et al. 3D‐printed artificial microfish Advanced materials 27, no. 30 (2015): 4411-4417.
• Using 3D printing mechanism of the microscale continuous optical printing, UV light optical curing enabling small scale micrometer resolution
• Adding Iron oxide magnetic nanoparticles to fish head for steering
• Adding Pt to tail section for propulsion mechanism which happens as the result of chemical reaction of Pt and Hydrogen peroxide
• Using EDX imaging to show Dispersion of Iron and platinium elements at the head and tail section of the printed fish structures