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Issue 36, 2017
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Defocused dark-field orientation imaging of single gold microrods on synthetic membranes

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Abstract

Plasmonic gold microrods (AuMRs) are promising optical probes because of direct observation of their in-plane orientations and motions under an optical microscope. However, our understanding of the optical properties of AuMRs is still very limited to the single particle level, and their out-of-plane orientations cannot be resolved by eye with high accuracy. Herein, we present the scattering properties of 1 μm-long AuMRs under a defocused DF microscope. The characteristic defocused scattering patterns of single AuMRs allowed us to resolve both in-plane and out-of-plane angles of single AuMRs. We further demonstrate the feasibility of using the defocused orientation imaging technique to track rotational motions and out-of-plane angles of single AuMRs on synthetic membranes.

Graphical abstract: Defocused dark-field orientation imaging of single gold microrods on synthetic membranes

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Supplementary files

Article information


Submitted
13 Jul 2017
Accepted
22 Aug 2017
First published
22 Aug 2017

Phys. Chem. Chem. Phys., 2017,19, 24453-24457
Article type
Communication

Defocused dark-field orientation imaging of single gold microrods on synthetic membranes

J. Lee and J. W. Ha, Phys. Chem. Chem. Phys., 2017, 19, 24453
DOI: 10.1039/C7CP04714B

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