Review - Recent Progresses in 4D Printing of Gel Materials

Kumkum Ahmed, Md Nahin Islam Shiblee, Ajit Khosla, Larry Nagahara, Thomas Thundat, Hidemitsu Furukawa

Research output: Contribution to journalReview articlepeer-review

33 Citations (Scopus)


4D printing is based on 3D printing technology with an added dimension, where the printed structure evolves as a function of time. Materials that are stimuli-responsive are used for 4D printing such as shape memory alloys and polymers etc. Once these materials are 3D printed, they can morph into complex geometries on being exposed to external stimuli such as heat, temperature, pH etc. Among various stimuli responsive materials, gels are of great interest to soft robotics community because of their toughness and flexibility. Designing of complex 4D printed gel objects that are preprogrammed to morph into otherwise unattainable geometries opens the door for numerous applications in every field of science and technology. This paper presents a comprehensive review of current trends, prospects and challenges in 4D printing of gel materials with a focus towards their applications in soft robotics and bionic devices.

Original languageEnglish
Article number037563
JournalJournal of the Electrochemical Society
Issue number3
Publication statusPublished - 2020

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry


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