Hwang, Ho Seong Jung, Hong Ju Kim, Jin Goo Jeong, Hyeon Su Lee, Won Jun Kim, Sang Ouk 2024-01-19T10:00:28Z 2024-01-19T10:00:28Z 2023-03-10 2023-04 1616-301X https://pubs.kist.re.kr/handle/201004/113883 Helix structures, which are frequently observed in nature, act as versatile structural templates for complex functionalities with asymmetry and anisotropy. However, atomically thin 2D materials, including graphene, transition metal dichalcogenides (TMDs), and MXenes, do not have inherent chirality in their planar geometry and cannot easily form such a structure. This study presents the macroscopic self-assembly of 2D materials for helical screws with an Archimedean spiral arrangement. The naturally triggered spontaneous rotation upon the 1D fiber assembly of 2D materials forms helical screws consisting of multiple helices and perversions. For a clear understanding of the morphological evolution of helical screws, variations in the helical pitch and angle are systematically analyzed considering thermodynamic and kinetic conditions. Subsequently, the influence of spontaneous helix formation on the properties of the 2D assembled fibers is investigated in terms of the solvent-driven actuator performance and electrical and electrothermal properties. The suggested approach provides a new perspective on the directed self-assembly of inherently achiral 2D materials toward chiral helix formation. English John Wiley & Sons Ltd. Artificial Helical Screws of 2D Materials with Archimedean Spiral Arrangement Article 10.1002/adfm.202212997 1 Advanced Functional Materials, v.33, no.17 Advanced Functional Materials 33 17 N scie scopus 000928882800001 2-s2.0-85147513023 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article; Early Access FIBERS TENDRIL PERVERSIONS ACTUATORS POLYMERS 2D materials chirality helix formation perversion self-assembly