Amorphous-Crystalline Solid Transformation-Induced Self-Actuation of Bending-to-Straightening Behavior via Helical Deformation.

ABSTRACT: Bending-to-straightening behavior is vital for both natural processes and advanced materials design. Nonclassical crystallization pathways, particularly amorphous-crystalline transformations, offer opportunities to achieve such dynamic actuation. This study reveals that sugar azides are capable of undergoing spontaneous bending-to-straightening behavior, accompanied by helical deformation, driven by an amorphous-crystalline transformation during anisotropic self-assembly. The process is initiated with bending amorphous nanowires, which evolve into locally crystallized twisted nanoribbons and ultimately straighten into crystalline rectangular hollow tubes through screw dislocation. This transformation is governed by the interplay between the stereostructure of the sugar backbone and the col

SUBMITTER: Meng X 

PROVIDER: S-EPMC12636014 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature