Characterization of Single Gold Nanorods with Two-Photon Microscopy

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Characterization of Single Gold Nanorods with Two-Photon Microscopy

Type: Master thesis
Title: Characterization of Single Gold Nanorods with Two-Photon Microscopy
Author: Kettenis, Chris
Issue Date: 2017-12-22
Keywords: Gold nanorods
Two-photon microscopy
Surface plasmon resonance
Abstract: Gold nanorods (GNRs) have unique optical properties. GNRs can be excited in the near-infrared range and their photoluminescence is bright and stable. Because of this, GNRs have a large range of possible applications, including use as labels or as biosensors. For these kinds of applications, it is important to be able to determine a GNR’s properties with high accuracy. Here we characterize single gold nanorods by five properties: their 3D position, plasmon resonance and orientation. The position of GNRs is determined with a sub-nanometer error in x, y and a 3 nm error in z. The surface plasmon resonance wavelength and the orientation of GNRs are determined with errors of <0.1 nm and 0.1 deg respectively. This is achieved by applying a four-dimensional fit to a stack of two-photon photoluminescence images. The methods presented in this thesis can be used to improve accuracy in the aforementioned applications of GNRs.
Supervisor: Noort, S.J.T. van
Faculty: Faculty of Science
Department: Physics (Master)
Specialisation: Research in Physics, Soft and Biological Matter
ECTS Credits: 3
Handle: http://hdl.handle.net/1887/62111
 

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