Eric James Ayars

Works (6)

Updated: July 5th, 2023 16:01

2003 article

The effects of probe boundary conditions and propagation on nano‐Raman spectroscopy

Hallen, H. D., Ayars, E. J., & Jahncke, C. L. (2003, June 1). Journal of Microscopy, Vol. 210, pp. 252–254.

By: H. Hallen n , E. Ayars* & C. Jahncke*

author keywords: boundary conditions near a metal; electric field enhancement; gradient-field Raman; KTP; light propagation in the near-field; nano-Raman; near-field Raman spectroscopy; near-field scanning optical microscopy; resolution
topics (OpenAlex): Near-Field Optical Microscopy; Gold and Silver Nanoparticles Synthesis and Applications; Plasmonic and Surface Plasmon Research
TL;DR: Raman spectra obtained in the near‐field, with collection of the Raman‐shifted light in reflection, show selective enhancement of vibrational modes, and the enhancement of certain Raman forbidden vibrations is explained by the presence of an electric field gradient near the metal‐apertured fibre probe. (via Semantic Scholar)
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Sources: Web Of Science, ORCID
Added: August 6, 2018

2001 article

Fundamental differences between micro‐ and nano‐Raman spectroscopy

Ayars, E. J., Jahncke, C. L., Paesler, M. A., & Hallen, H. D. (2001, April 1). Journal of Microscopy, Vol. 202, pp. 142–147.

By: E. Ayars n, C. Jahncke, M. Paesler* & H. Hallen* 

author keywords: infrared spectroscopy; near-field optical microscopy; Raman spectroscopy
topics (OpenAlex): Near-Field Optical Microscopy; Integrated Circuits and Semiconductor Failure Analysis; Quantum Dots Synthesis And Properties
TL;DR: For nano‐Raman spectroscopy with an NSOM, selection rules allow for the detection of active modes with intensity dependent on the field gradient, which can have similar activity as infra‐red absorption modes. (via Semantic Scholar)
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Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2000 article

Electric Field Gradient Effects in Raman Spectroscopy

Ayars, E. J., Hallen, H. D., & Jahncke, C. L. (2000, November 6). Physical Review Letters, Vol. 85, pp. 4180–4183.

By: E. Ayars n, H. Hallen n  & C. Jahncke n

topics (OpenAlex): Near-Field Optical Microscopy; Force Microscopy Techniques and Applications; Integrated Circuits and Semiconductor Failure Analysis
TL;DR: A theoretical model is developed for this "gradient-field Raman" effect, which can explain the origin and intensity of some Raman modes observed in SERS and through a near-field optical microscope (NSOM-Raman). (via Semantic Scholar)
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Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2000 chapter

Near-field Raman spectroscopy: electric field gradient effects

In D. B. Williams & R. Shimizu (Eds.), Microbeam Analysis 2000: proceedings of the Second Conference of the International Union of Microbeam Analysis Societies held in Kailua-Kona, Hawaii, 9-14 July 2000 (Vol. 165, pp. 115–116). Bristol: Institute of Physics Publishing.

By: E. Ayars, M. Paesler & H. Hallen 

Ed(s): D. Williams & R. Shimizu

Source: NC State University Libraries
Added: August 6, 2018

2000 article

Surface enhancement in near-field Raman spectroscopy

Ayars, E. J., & Hallen, H. D. (2000, June 26). Applied Physics Letters, Vol. 76, pp. 3911–3913.

By: E. Ayars n & H. Hallen n 

topics (OpenAlex): Near-Field Optical Microscopy; Advanced Fluorescence Microscopy Techniques; Plasmonic and Surface Plasmon Research
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Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

1999 article

Proximal electromagnetic shear forces

Ayars, Aspnes, Moyer, & Paesler. (1999, October 1). Journal of Microscopy, Vol. 196, pp. 59–60.

By: Ayars, Aspnes, Moyer & Paesler

topics (OpenAlex): Near-Field Optical Microscopy; Integrated Circuits and Semiconductor Failure Analysis; Force Microscopy Techniques and Applications
TL;DR: A simple model calculation is performed to estimate the electromagnetically induced shear force caused by a current dissipation when a charged tip is moved parallel to a conducting material. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

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