Title: Enhanced Optical Trapping and Arrangement of Nano-Objects in a Plasmonic Nanocavity
Authors: Chen, Chang ×
Juan, Mathieu L
Li, Yi
Maes, Guido
Borghs, Gustaaf
Van Dorpe, Pol
Quidant, Romain #
Issue Date: Jan-2012
Publisher: American Chemical Society
Series Title: Nano Letters vol:12 issue:1 pages:125-132
Abstract: Gentle manipulation of micrometer-sized dielectric objects with optical forces has found many applications in both life and physical sciences. To further extend optical trapping toward the true nanometer scale, we present an original approach combining self-induced back action (SIBA) trapping with the latest advances in nanoscale plasmon engineering. The designed resonant trap, formed by a rectangular plasmonic nanopore, is successfully tested on 22 nm polystyrene beads, showing both single- and double-bead trapping events. The mechanism responsible for the higher stability of the double-bead trapping is discussed, in light of the statistical analysis of the experimental data and numerical calculations. Furthermore, we propose a figure of merit that we use to quantify the achieved trapping efficiency and compare it to prior optical nanotweezers. Our approach may open new routes toward ultra-accurate immobilization and arrangement of nanoscale objects, such as biomolecules.
ISSN: 1530-6984
Publication status: published
KU Leuven publication type: IT
Appears in Collections:ESAT - MICAS, Microelectronics and Sensors
Solid State Physics and Magnetism Section
Semiconductor Physics Section
× corresponding author
# (joint) last author

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