Chapter 3

The Rise of Smart Materials

Recent Developments

Mariel Amparo Fernandez Aramayo

Mariel Amparo Fernandez Aramayo

Polytechnic School, Chemical Engineering Department, University of São Paulo, São Paulo, Brazil

School of Engineering, Mackenzie Presbyterian University, São Paulo, Brazil

MackGraphe-Mackenzie Institute for Research in Graphene and Nanotechnologies, Mackenzie Presbyterian University, São Paulo, Brazil

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Mohd Rehan

Mohd Rehan

School of Engineering, Mackenzie Presbyterian University, São Paulo, Brazil

MackGraphe-Mackenzie Institute for Research in Graphene and Nanotechnologies, Mackenzie Presbyterian University, São Paulo, Brazil

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Bijaya Bikram Samal

Bijaya Bikram Samal

Advanced Technology Development Centre, Indian Institute of Technology, Kharagpur, West Bengal, India

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Cheruvu Siva Kumar

Cheruvu Siva Kumar

Department of Mechanical Engineering, Indian Institute of Technology, Kharagpur, West Bengal, India

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Shailendra Kumar Varshney

Shailendra Kumar Varshney

Department of Electronics and Electrical Communication Engineering, Indian Institute of Technology, Kharagpur, West Bengal, India

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First published: 21 May 2025

Summary

Recently 4D printing has drawn wide attention from both academia and industry for the ability to create dynamic parts and structures using various smart materials with the ability to alter shape or qualities over time in reaction to environmental stimuli such as heat, moisture, light, or electrical current. This cutting-edge printing method harnesses the capabilities of smart materials offering immense potential for creating complex structures that can adapt, reconfigure, self-morph, self-heal, or self-assemble after printing. Recent developments in new kinds of smart materials and their composites such as shape memory polymers, magnetic shape memory alloys, hydrogels, electro-responsive polymers, liquid crystal elastomers, and smart inorganic polymers have fueled the development of 4D printing technology. The utilization of various smart materials in 4D printing is based on its specific applications and requirements. The incorporation of smart materials into 4D printing allows for the creation of objects that actively respond to stimuli, allowing for dynamic behavior, improved performance, and novel solutions to complicated challenges.

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