|Michigan Tech's Open Sustainability Technology Lab.
Wanted: Students to make a distributed future with solar-powered open-source 3-D printing and recycling.
Pearce Publications: Energy Conservation • Energy Policy • Industrial Symbiosis • Life Cycle Analysis • Materials Science • Open Source • Photovoltaic Systems • Solar Cells • Sustainable Development • Sustainability Education
|This Open Source Appropriate Technology has been designed but not yet tested — use at your own risk.|
|This Open Source Appropriate Technology has been modeled.|
|This Open Source Appropriate Technology has been prototyped.|
|This Open Source Appropriate Technology has been verified by MOST|
- Rasoul Bayaniahangar, Shahab Bayani Ahangar, Zhongtian Zhang, Bruce P.Lee, Joshua M.Pearce. 3-D printed magnetic soft magnetic helical coil actuators of iron oxide embedded polydimethylsiloxane. Sensors and Actuators B: Chemical 326, (2021), 128781. https://doi.org/10.1016/j.snb.2020.128781 open access
|Open source 3-D printed magnetic soft magnetic helical coil actuators|
Soft actuators have grown to be a topic of great scientific interest. As the fabrication of soft actuators with conventional microfabrication methods are tedious, expensive, and time consuming, employment of 3-D printing fabrication methods appears promising as they can simplify fabrication and reduce the production cost. Complex structures can be fabricated with 3-D printing such as helical coils that can achieve actuation performances, which otherwise would be impossible with simpler geometries. In this study, development of soft magnetic helical coil actuators of iron oxide embedded polydimethylsiloxane (PDMS) was achieved with embedded 3-D printing techniques. Composites with three different weight ratios of 10 %, 20 %, and 30 % iron nanoparticles to PDMS were formulated. Using iron nanoparticles with the size of 15−20 nm helps preserve viscosity of the printing material low enough to print it with a small-bore needle (30-gauge, 180 micrometers inner diameter). The hydrogel support of Pluronic f-127 bath and the ability to maintain the ratio of the printed fiber’s diameter to coil diameter about 0.25 resulted in the successful fabrication and release of fabricated helical coil structures. This enabled 3-D printed structures characterized as magnetic actuators to achieve linear and bending actuation of more than 300 % and 80° respectively in the case of composites with 30 % iron oxide nanoparticles. Moreover, it was shown that the 3-D printed helical coils with 10 % iron oxide nanoparticles can be utilized as untethered soft robots capable of locomotion on 45 and 90 degrees inclines under an applied magnetic field.
Highlights[edit | edit source]
- Soft magnetic helical coil actuators of iron oxide embedded polydimethylsiloxane.
- Composites with weight ratios of 10 %, 20 %, and 30 % iron nanoparticles to PDMS were formulated.
- Magnetic actuators to achieve linear of more than 300 % and bending actuation of 80°.
- 3-D printed helical coils with 10 % iron oxide = untethered soft robots climbed 90 degree inclines.
Keywords[edit | edit source]
3D printing; Mechanical testing; mechanical properties; open-source platform;Bioprinting; Magnetic nanoparticles; Soft actuators; Magnetic soft actuators; Actuators
See also[edit | edit source]
- Ystruder: open source multifunction extruder with sensing and monitoring capabilities
- Mechanical Properties of Ultraviolet-Assisted Paste Extrusion and Postextrusion Ultraviolet-Curing of Three-Dimensional Printed Biocomposites
- Mechanical Properties of Components Fabricated with Open-Source 3-D Printers Under Realistic Environmental Conditions
|This page is part of an international project to use RepRap 3-D printing to make OSAT for sustainable development. Learn more.
Research: Open source 3-D printing of OSAT • RecycleBot • LCA of home recycling • Green Distributed Recycling • Ethical Filament • LCA of distributed manufacturing • RepRap LCA Energy and CO2 • Solar-powered RepRaps • solar powered recyclebot • Feasibility hub • Mechanical testing • RepRap printing protocol: MOST• Lessons learned • MOST RepRap Build • MOST Prusa Build • MOST HS RepRap build • RepRap Print Server