1 research outputs found
Accurate Transfer of Individual Nanoparticles onto Single Photonic Nanostructures
Controlled integration
of metallic nanoparticles (NPs) onto photonic
nanostructures enables the realization of complex devices for extreme
light confinement and enhanced light–matter interaction. For
instance, such NPs could be massively integrated on metal plates to
build nanoparticle-on-mirror (NPoM) nanocavities or photonic integrated
waveguides (WGs) to build WG-driven nanoantennas. However, metallic
NPs are usually deposited via drop-casting, which prevents their accurate
positioning. Here, we present a methodology for precise transfer and
positioning of individual NPs onto different photonic nanostructures.
Our method is based on soft lithography printing that employs elastomeric
stamp-assisted transfer of individual NPs onto a single nanostructure.
It can also parallel imprint many individual NPs with high throughput
and accuracy in a single step. Raman spectroscopy confirms enhanced
light–matter interactions in the resulting NPoM-based nanophotonic
devices. Our method mixes top-down and bottom-up nanofabrication techniques and shows the potential of building complex
photonic nanodevices for multiple applications ranging from enhanced
sensing and spectroscopy to signal processing