Sensing dielectric media on the nanoscale with freely oriented gold nanorods

Literature Information

Publication Date 2013-02-18
DOI 10.1039/C3CP43988G
Impact Factor 3.676
Authors

Frank Wackenhut, Alfred J. Meixner


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Abstract

In this work we demonstrate that freely oriented individual gold nanorods (GNRs) can be used for sensing variations of the refractive index at the interface between two dielectric media. Both the elastic scattering and the luminescence signal of individual GNRs have been used to characterize the dielectric medium surrounding the particles. The scattering signal depends strongly on the distance from the focusing interface and the refractive index mismatch at the focusing interface, while the luminescence signal is only influenced by the last parameter. We used radially and azimuthally polarized light as an excitation source to directly determine the orientation of individual gold nanorods embedded within a dielectric medium.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
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Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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