• Nanostructure Formation at the Liquid Solid Interface

    Nanostructure Formation at the Liquid Solid Interface

    While conventional substrate-based techniques have undeniably given rise to an impressive number of nanostructured surfaces, the scope and scale of this success is dwarfed by the accomplishments of solution-based techniques. Our goal is to bring this impressive solution-based chemistry to the substrate platform.

  • Nanostructure Formation in a Vapor Phase

    Nanostructure Formation in a Vapor Phase

    The vapor phase formation of nanostructures through self-assembly, directed-assembly, or island growth modes has been studied for many years and has yielded a wide array of nanostructures. We, however, have devised a simple technique whereby periodic arrays of nanostructures are first formed using dynamic templating and are then treated as heterogeneous nucleation sites in subsequent assembly processes.

  • Dynamic Templating

    Dynamic Templating

    The deposition of a high surface energy thin film on a low surface energy substrate, followed by its subsequent dewetting and agglomeration into droplets at elevated temperatures, is the most straightforward method for obtaining substrate-based nanostructures. We have devised a directed assembly route, referred to as dynamic templating, which enhances the agglomeration process over that observed for conventional dewetting techniques.

  • Chemical Detection

    Chemical Detection

    We have, in collaboration with the group of Professor Eric Borguet (Department of Chemistry, Temple University), demonstrated the optical detection of H2 using substrate-immobilized Au nanoparticles.