Nagashima, So Yoon, Sun Mi Kim, Do Hyun Nakatani, Akihiro Moon, Myoung-Woon 2024-01-19T12:33:46Z 2024-01-19T12:33:46Z 2022-04-05 2022-02 https://pubs.kist.re.kr/handle/201004/115662 Assembly of molecular-scale nanowire arrays with defined spacing in an inexpensive and time-efficient manner enables the development of versatile functional nanodevices that are unattainable with conventional approaches involving top-down patterning techniques. This paper introduces a bottom-up method for rapidly assembling DNA molecules into periodically aligned 2-nm-thin nanowires. The method uses wettability-contrast channels composed of superhydrophilic wrinkles with a periodic high-aspect-ratio structure as the top and a hydrophobic flat surface as the bottom. After injecting the channels with DNA solution, one end of the wrinkled top is detached to facilitate unidirectional receding of an array of submicrometer-scale capillary bridges developed in between. The molecules confined in each capillary bridge are then made to evaporatively assemble into a linear structure on the flat surface, thus yielding an array of molecular-scale nanowires. The inter-nanowire separation can be controlled by tuning the wrinkle dimensions. The wrinkle-assisted capillary-bridging method, termed WaCaB, exploits the surface instability of a film-substrate system for wrinkle fabrication and employs a simple detachment process, thus offering a general and flexible pathway for the facile assembly of spatially organized single-level DNA nanowires, which can create new fabrication opportunities for devices in nanoelectronics, photonics, and biology. English John Wiley and Sons Ltd Wrinkle-Assisted Capillary Bridging for the Directed Assembly of Single-Level DNA Nanowire Arrays Article 10.1002/admi.202102243 1 Advanced Materials Interfaces, v.9, no.6 Advanced Materials Interfaces 9 6 N scie scopus 000747306000001 2-s2.0-85123743089 Chemistry, Multidisciplinary Materials Science, Multidisciplinary Chemistry Materials Science Article FILM capillary bridges DNA fabrication of hierarchical wrinkles nanowires surface instability