Influence of secondary tip shape on illumination-mode near-field scanning optical microscopy images

Lee J. Richter; Claire E. Jordan; Richard R. Cavanagh; Garnett W. Bryant; Ansheng Liu; Stephan J. Stranick; Christine D. Keating; Michael J. Natan

doi:10.1364/JOSAA.16.001936

Influence of secondary tip shape on illumination-mode near-field scanning optical microscopy images

Lee J. Richter, Claire E. Jordan, Richard R. Cavanagh, Garnett W. Bryant, Ansheng Liu, Stephan J. Stranick, Christine D. Keating, Michael J. Natan

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

We report illumination-mode near-field optical microscopy images of individual 80–115-nm-diameter Au particles recorded with metal-coated fiber probes. It is found that the images are strongly influenced by the metal-coating thickness. This dependence is consistent with theoretical models, which are in good agreement with the experimental images. Probes with thick coatings (~λ/2) produce images consisting of three extrema, owing to a resonancelike polarization of the probe end. Probes with thinner coatings generally produce simpler images. However, in some cases the images contain wavelike structures that are due to interference between direct radiation from the tip and propagating tip fields scattered by the particles.

Original language	English (US)
Pages (from-to)	1936-1946
Number of pages	11
Journal	Journal of the Optical Society of America A: Optics and Image Science, and Vision
Volume	16
Issue number	8
DOIs	https://doi.org/10.1364/JOSAA.16.001936
State	Published - Aug 1999

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Computer Vision and Pattern Recognition

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10.1364/JOSAA.16.001936

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title = "Influence of secondary tip shape on illumination-mode near-field scanning optical microscopy images",

abstract = "We report illumination-mode near-field optical microscopy images of individual 80–115-nm-diameter Au particles recorded with metal-coated fiber probes. It is found that the images are strongly influenced by the metal-coating thickness. This dependence is consistent with theoretical models, which are in good agreement with the experimental images. Probes with thick coatings (~λ/2) produce images consisting of three extrema, owing to a resonancelike polarization of the probe end. Probes with thinner coatings generally produce simpler images. However, in some cases the images contain wavelike structures that are due to interference between direct radiation from the tip and propagating tip fields scattered by the particles.",

author = "Richter, {Lee J.} and Jordan, {Claire E.} and Cavanagh, {Richard R.} and Bryant, {Garnett W.} and Ansheng Liu and Stranick, {Stephan J.} and Keating, {Christine D.} and Natan, {Michael J.}",

year = "1999",

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T1 - Influence of secondary tip shape on illumination-mode near-field scanning optical microscopy images

AU - Richter, Lee J.

AU - Jordan, Claire E.

AU - Cavanagh, Richard R.

AU - Bryant, Garnett W.

AU - Liu, Ansheng

AU - Stranick, Stephan J.

AU - Keating, Christine D.

AU - Natan, Michael J.

PY - 1999/8

Y1 - 1999/8

N2 - We report illumination-mode near-field optical microscopy images of individual 80–115-nm-diameter Au particles recorded with metal-coated fiber probes. It is found that the images are strongly influenced by the metal-coating thickness. This dependence is consistent with theoretical models, which are in good agreement with the experimental images. Probes with thick coatings (~λ/2) produce images consisting of three extrema, owing to a resonancelike polarization of the probe end. Probes with thinner coatings generally produce simpler images. However, in some cases the images contain wavelike structures that are due to interference between direct radiation from the tip and propagating tip fields scattered by the particles.

AB - We report illumination-mode near-field optical microscopy images of individual 80–115-nm-diameter Au particles recorded with metal-coated fiber probes. It is found that the images are strongly influenced by the metal-coating thickness. This dependence is consistent with theoretical models, which are in good agreement with the experimental images. Probes with thick coatings (~λ/2) produce images consisting of three extrema, owing to a resonancelike polarization of the probe end. Probes with thinner coatings generally produce simpler images. However, in some cases the images contain wavelike structures that are due to interference between direct radiation from the tip and propagating tip fields scattered by the particles.

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Influence of secondary tip shape on illumination-mode near-field scanning optical microscopy images

Abstract

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