Journal ArticleDOI
Confinement of enhanced field investigated by tip-sample gap regulation in tapping-mode tip-enhanced Raman microscopy
Taka-aki Yano,Taro Ichimura,Atsushi Taguchi,Norihiko Hayazawa,Prabhat Verma,Yasushi Inouye,Satoshi Kawata +6 more
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TLDR
In this article, a tip-enhanced near field Raman microscope was developed that can precisely regulate longitudinal distance between a metallic tip and sample molecules by employing a time-gated photoncounting scheme.Abstract:
The authors developed a tip-enhanced near field Raman microscope that can precisely regulate longitudinal distance between a metallic tip and sample molecules. This was done by employing a time-gated photoncounting scheme that enabled us to observe exponentially decaying near field Raman intensity with the tip-sample distance. The exponential decay shows a characteristic of the enhanced field generated by the localization of the surface plasmon polaritons near the tip apex. This microscope was applied to evaluate metal-coated tips and also to investigate confinement of the field generated at a gap between two metal nanostructures from the decay curves.read more
Citations
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Journal ArticleDOI
Tip-Enhanced Raman Spectroscopy: Technique and Recent Advances.
TL;DR: This review discusses a relatively new technique for optical nanoimaging at visible wavelength, known as tip-enhanced Raman spectroscopy (TERS), which relies on the enhancement and spatial confinement of light in the close vicinity of the apex of a plasmonic nanotip to obtain nanoimages with high spatial resolution.
Journal ArticleDOI
Nanoscale chemical imaging using tip-enhanced Raman spectroscopy: a critical review.
TL;DR: This Review focuses on the prerequisites for the efficient coupling of light to the tip as well as the shortcomings and pitfalls that have to be considered for TERS imaging, a fascinating but still challenging way to look at the nanoworld.
Journal ArticleDOI
Tip-enhanced near-field optical microscopy.
TL;DR: The principles of near-field optics are outlined, the mechanisms contributing to local field enhancement and how it can be used to enhance optical signals are discussed and several recent examples of Raman and fluorescence microscopy with 10 nm spatial resolution of single molecules are reviewed.
Journal ArticleDOI
Tip-enhanced Raman spectroscopy – from early developments to recent advances
TL;DR: The development of this still-young technique, from early experiments to recent achievements concerning inorganic, organic, and biological materials, is addressed and an assessment of the frontiers and new concepts of TERS, which aim towards rendering it a general and widely applicable technique that combines the highest possible lateral resolution and extreme sensitivity are provided.
Journal ArticleDOI
Tip-enhanced near-field optical microscopy
Nina Mauser,Achim Hartschuh +1 more
TL;DR: This review illustrates the physical principle of TENOM that utilizes the antenna function of a sharp probe to efficiently couple light to excitations on nanometer length scales and discusses the antenna-induced enhancement of different optical sample responses including Raman scattering, fluorescence, generation of photocurrent and electroluminescence.
References
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Journal ArticleDOI
Nanoscale chemical analysis by tip-enhanced Raman spectroscopy
TL;DR: In this article, a fine metal tip brought to within a few nanometers of a molecular film was found to give strong enhancement of Raman scattered light from the sample, which can be used for molecular analysis with excellent spatial resolution.
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High-Resolution Near-Field Raman Microscopy of Single-Walled Carbon Nanotubes
TL;DR: Near-field Raman spectroscopy and imaging of single isolated single-walled carbon nanotubes with a spatial resolution of approximately 25 nm is presented to study local variations in the Raman spectrum along a single single-Walledcarbon nanotube.
Journal ArticleDOI
Near-Field Fluorescence Microscopy Based on Two-Photon Excitation with Metal Tips
TL;DR: In this article, a near-field fluorescence imaging using femtosecond laser pulses of proper polarization is presented. But the technique is not suitable for near field imaging, and the spatial resolution is limited to 20 nm.
Journal Article
Near-field fluorescence microscopy based on two-photon excitation with metal tips
TL;DR: In this article, a near-field fluorescence imaging using femtosecond laser pulses of proper polarization is presented. But the technique is not suitable for near field imaging, and the spatial resolution is limited to 20 nm.
Journal ArticleDOI
Near-field scanning optical microscope with a metallic probe tip.
Yasushi Inouye,Satoshi Kawata +1 more
TL;DR: A near-field scanning optical microscope with a metallic probe tip was developed for detecting localized photons near the surface of the fine structure of a sample and the removal of stray-light noise contribution.