2024-12-02 ノースカロライナ州立大学(NCState)
D-Met fabricated patterns produce components for potential use in microelectromechanical systems (MEMS). Image credit: Julia Chang.
＜関連情報＞
- https://news.ncsu.edu/2024/12/self-assembling-electronics/
- https://pubs.rsc.org/en/Content/ArticleLanding/2024/MH/D4MH01177E
液体金属からの混合金属酸化物アレイの誘導型無段階アセンブリ Guided Ad infinitum Assembly of Mixed-Metal Oxide Arrays from Liquid Metal
Julia J Chang, Chuansen Du, Dhanush U Jamadgni, Alana Pauls, Andrew Martin, Le Wei, Thomas Ward III, Meng Lu and Martin M Thuo
Materials Horizons Published:25 Nov 2024
DOI:https://doi.org/10.1039/D4MH01177E
Abstract
Bottom-up nano- to micro-fabrication is crucial in modern electronics and optics. Conventional multi-scale array fabrication techniques, however, are facing challenges in reconciling the contradiction between pursuit of better device performance while lowering fabrication cost and/or energy consumption. Here we introduce a facile mixed-metal array fabrication method based on guided self-assembly of polymerizing organometallic adducts derived from the passivating oxides of a ternary liquid metal to create mixed metal wires. Driven by capillary action and evaporation-driven Marangoni convections, large-area, high-quality organometallic nano- to micro-wire arrays were fabricated. Calcination converts the organometallics into oxides (semiconductors) without compromising wire continuity or array periodicity. Exploiting capillary bridges on a preceding layer, hierarchical arrays were made. Similarly, exploiting the conformity of the liquid to the mold, arrays with complex geometries were made. Given the periodicity and high refractive index of these arrays we observe guided mode resonance while their complex band structures enable fabrication of diodes or gates. This work demonstrates a simple, affordable approach to opto-electronics based on self-assembling arrays.
