Deployable scissor structures: Classification of modifications and applications

Scissor-type deployable structures, characterized by superior flexibility, high expansion ratio, and ease of control, have been extensively studied across architecture and engineering. A variety of innovative designs have been created using different design methods and/or incorporating specific modifications. Existing reviews on scissor deployable structures have mainly focused on conventional design methods that achieve different configurations by modification of shape and dimensions of basic units. This categorization overlooks several distinct designs. To address this, a different classification method is proposed, organizing the variants of deployable scissor structures into four categories: member shape, joint location, assembly method, and hybrid system. The classification enables a more nuanced exploration of each design, illuminating their underlying working principles and relevant applications. Diverse designs are summarized using this comprehensive approach to facilitate the identification of their similarities, differences, and potential avenues for future improvements.