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Materials Science in Additive Manufacturing Functional materials for AM

battery using LiFePO /AB/CNT was developed through AM technologies, such as piezoelectric, thermoelectric,
4
inkjet printing. It demonstrated a specific capacity of and perovskite materials. The advancement of functional
150 mAh/g at 0.1 C with 150 cycles. This study represents components usable in diverse applications such as energy
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the fabrication of thick electrodes with high-power density harvesting, displays, and sensors has been facilitated by
and energy density, revealing the potential for high- the development of AM technologies. Integration with
performance energy storage devices. Furthermore, Chen et polymer materials has enabled manufacturing on curved
al. developed a lithium-ion micro-battery using carbon surfaces, the development of flexible components, and the
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black through SLA. The battery exhibited a capacity of 1.4 enhancement of functional properties, maximizing the
2
μAh/cm after two cycles of charging. This study signifies utilization methods and fields of AM technologies.
the expansion of existing manufacturing methods.
This review emphasizes the importance of functional
4. Conclusion and future perspectives polymer materials in expanding the scope and capabilities
of AM processes. Active participation in diversifying
The promising and essential AM technology, pivotal for
the Fourth Industrial Revolution, offers tremendous utility material options to meet the varied requirements of
in manufacturing, spanning from product development modern manufacturing, ranging from photosensitive resins
to efficient production and small-batch manufacturing to polymer powders, filaments, and viscous inks, is evident
of diverse products. The advancement of AM technology in recent research. Novel functional polymer materials with
has led to the development of materials with enhanced enhanced conductivity, actuation, and other functionalities
performance and novel characteristics, alongside the hold huge potential across various application domains,
introduction of efficient and precise manufacturing from biocompatible implants to smart robots.
systems to the market. Particularly, intensive research Overall, the rapid growth of research environments
on functional materials based on polymer substrates and and technological advancements in polymer materials
their applications is currently underway, showcasing their for AM signify a promising future where AM becomes
immense potential value. an essential and complementary component of the

In this review, we categorize the AM technologies modern manufacturing ecosystem. Through continuous
primarily used for manufacturing functional polymer interdisciplinary collaboration and innovation, the vision
materials based on their manufacturing methods and of realizing fully functional custom products through AM
operational principles. Subsequently, we examine the AM will be achieved.
processes based on the characteristics of functional materials.
By emphasizing the key features of each material, we support Acknowledgments
an upward approach to functional polymer design, enabling None.
not only optimal process ability but also the achievement of
multifunctional and complex shape manufacturing. Funding
Next, we investigate the functional properties primarily This work was supported by the Technology Development
utilized in current polymer-based functional materials. The Program (Grant No. S3248116) funded by the Ministry
development of functional materials based on polymers is of SMEs and Startups (MSS, Korea), and the National
predominantly focused on photosensitive resins. Extensive Research Foundation of Korea (NRF) grant under the
research has been conducted on the development of Korea government (MSIT) (no. RS-2023-00211636).
functional resins with properties such as biocompatibility,
electrical conductivity, and magnetism. For instance, Conflicts of interest
research on biocompatible resins is progressing for the
optimal design of artificial organs and internal implants. The authors declare that they have no competing interests.
In addition, research on functional materials for various Authors’ contributions
applications, such as sensors, actuators, and soft robots,
utilizing electrical conductivity and magnetism, is ongoing. Conceptualization: Im Doo Jung, Hayeol Kim
Studies showcasing the achievement of special functionalities Investigation: All authors
through the utilization of the unique 3D manufacturing Writing – original draft: All authors
capabilities and mixed production characteristics of AM Writing – review and editing: Im Doo Jung, Hayeol Kim
technologies have also been examined.
Furthermore, we explore the development of Ethics approval and consent to participate
functional components with various structures utilizing Not applicable.

Volume 3 Issue 2 (2024) 19 doi: 10.36922/msam.3323