Page 14 - MSAM-3-2

Materials Science in Additive Manufacturing Functional materials for AM

A

B

Figure 4. Polymer-based applications of magnetic powder- and metallic powder-embedded materials. (A) Origami-based programming magnetization
41
profile method and soft robots based on magnetically responsive soft materials. Images reproduced with permission from Wajahat et al. Copyright © 2023
American Chemical Society. (B) Soft wearable inductance sensor fabricated with a liquid metal core-polymer sheath structure. Images reproduced with
74
permission from Zhou et al. Copyright © 2018 American Chemical Society.
multifunctional soft robots. Integrating magnetic 3.2. Metal powders
materials with other functional materials, such as In recent years, there has been remarkable progress in the
biocompatible or conductive materials, can expand
the capabilities and applications of these robots. field of electronic devices, especially with the emergence
(iii) High magnetic particle content limitations in vat of soft electronics based on polymer matrices, which
photopolymerization: While vat photopolymerization have seen significant advancements following the recent
offers advantages like high resolution, it presents strides in 3D printing technology. Nanoparticle fillers
51
a challenge when using dark magnetic particles. can be added to polymers to impart various properties.
These particles can hinder the curing process due Among these, metal nanoparticle inks are readily
to light absorption, making it difficult to achieve available and exhibit relatively high electrical conductivity
52
high magnetic particle content within the printed compared to inks containing other types of nanofillers.
structures. This limitation can restrict the overall These metal nanoparticles are used to develop a variety
magnetic strength and functionality of the soft robots of flexible or stretchable soft electronics by combining
produced using this method. embedded polymer composite ink, conformal printing,

Volume 3 Issue 2 (2024) 8 doi: 10.36922/msam.3323