TY - JOUR AB - Purpose– The purpose of this article is to reviews state-of-the-art developments in four-dimensional (4D) printing, discuss what it is, investigate new applications that have been discovered and suggest its future impact. Design/methodology/approach– The article clarifies the definition of 4D printing and describes notable examples covering material science, equipment and applications. Findings– This article highlights an emerging technology cycle where 4D printing research has gained traction within additive manufacturing. The use of stimuli-responsive materials can be programmed and printed to enable pre-determined reactions when subject to external stimuli. Originality/value– This article reviews state-of-the-art developments in 4D printing, discusses what it is, investigates new applications that have been discovered and suggests its future impact. VL - 34 IS - 4 SN - 0144-5154 DO - 10.1108/AA-07-2014-062 UR - https://doi.org/10.1108/AA-07-2014-062 AU - Pei Eujin PY - 2014 Y1 - 2014/01/01 TI - 4D Printing: dawn of an emerging technology cycle T2 - Assembly Automation PB - Emerald Group Publishing Limited SP - 310 EP - 314 Y2 - 2024/04/25 ER -