Comparative Study of Scalable Synthesis Methods for Van der Waals Nanowires: Electrochemical Growth vs. Vapor Phase Techniques

Van der Waals nanowires (vdW NWs) have emerged as promising building blocks for next-generation nanoelectronic, optoelectronic, and energy devices due to their defect-tolerant interfaces and unique anisotropic properties. However, the transition from laboratory-scale fabrication to industrial deployment depends critically on the development of scalable and cost-effective synthesis strategies. This study presents a comparative analysis of two prominent approaches for the large-scale production of vdW nanowires: electrochemical growth and vapor phase techniques. Electrochemical methods offer advantages such as low-temperature processing, precise control over growth parameters, and compatibility with diverse substrates, making them attractive for flexible and energy-efficient manufacturing. In contrast, vapor phase techniques, including chemical vapor deposition and physical vapor transport, provide superior crystallinity, uniformity, and high-purity nanowires, albeit often requiring higher temperatures and more complex infrastructure. Key performance indicators such as growth rate, structural quality, scalability, cost efficiency, and environmental impact are systematically evaluated. The findings highlight trade-offs between process simplicity and material quality, emphasizing the need for hybrid or optimized approaches to balance scalability with performance. This work provides critical insights into selecting appropriate synthesis routes for industrial-scale production of vdW nanowires and outlines future directions for advancing their practical applications.