Nano Letters, Год журнала: 2025, Номер unknown

Опубликована: Май 8, 2025

Plasmonic nanoarrays show applications in biosensors, nanolasers, and photodetectors, but precisely organizing orienting nanoparticle (NP) trimers on substrates remains a grand challenge. Here, we present self-assembly strategy to arrange metallic NPs with distinct diameters into centimeter-scale arrays of highly oriented linear by modulating the balance between capillary forces coordination-electrostatic interactions. We achieved an 88% yield plasmonic ±10° orientation uniformity across 1 cm2 optimizing ionic strength NP solutions. The high sub-3-nm interparticle gaps enabled collective polarization-dependent optical responses high-order coupling. Our offers versatile platform for creating complex nanostructure heterogeneous assemblies use devices.

Язык: Английский