A nanofabricated plasmonic core-shell-nanoparticle library
Journal article, 2019

Three-layer core-shell-nanoparticle nanoarchitectures exhibit properties not achievable by single-element nanostructures alone and have great potential to enable rationally designed functionality. However, nanofabrication strategies for crafting core-shell-nanoparticle structure arrays on surfaces are widely lacking, despite the potential of basically unlimited material combinations. Here we present a nanofabrication approach that overcomes this limitation. Using it, we produce a library of nanoarchitectures composed of a metal core and an oxide/nitride shell that is decorated with few-nanometer-sized particles with widely different material combinations. This is enabled by resolving a long-standing challenge in this field, namely the ability to grow a shell layer around a nanofabricated core without prior removal of the lithographically patterned mask, and the possibility to subsequently grow smaller metal nanoparticles locally on the shell only in close proximity of the core. Focusing on the application of such nanoarchitectures in plasmonics, we show experimentally and by Finite-Difference Time-Domain (FDTD) simulations that these structures exhibit significant optical absorption enhancement in small metal nanoparticles grown on the few nanometer thin dielectric shell layer around a plasmonic core, and derive design rules to maximize the effect by the tailored combination of the core and shell materials. We predict that these structures will find application in plasmon-mediated catalysis and nanoplasmonic sensing and spectroscopy.

Author

Arturo Susarrey- Arce

Chalmers, Physics, Chemical Physics

K. M. Czajkowski

University of Warsaw

Iwan Darmadi

Chalmers, Physics, Chemical Physics

Sara Nilsson

Chalmers, Physics, Chemical Physics

Irem Tanyeli

Chalmers, Physics, Chemical Physics

Svetlana Alekseeva

Chalmers, Physics, Chemical Physics

Tomasz Antosiewicz

Chalmers, Physics, Bionanophotonics

Christoph Langhammer

Chalmers, Physics, Chemical Physics

Nanoscale

20403372 (eISSN)

Vol. 11 44 21207-21217

Areas of Advance

Nanoscience and Nanotechnology (SO 2010-2017, EI 2018-)

Subject Categories

Materials Chemistry

Other Physics Topics

Condensed Matter Physics

Infrastructure

Chalmers Materials Analysis Laboratory

Nanofabrication Laboratory

DOI

10.1039/c9nr08097j

PubMed

31663581

More information

Latest update

8/27/2020