Sensing carbon allotropes in protective coatings on optical fibers with far- and near-field Raman spectroscopy and microscopy

Raman spectra of samples contained in hollow quartz fibers are compared quantitatively to conventional Raman spectra using identical laser, spectrometer, detector, and scan speed. We find the fiber signal to be enhanced by a factor of 250/m of fiber, in good agreement with calculations based on geometrical optics. A fiber spectrum of 2 mol% trans-stilbene in benzene is good enough to allow essentially perfect solvent subtraction.

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Near-Field Raman Spectroscopy and Imaging

Applied Scanning Probe Methods V - NanoScience and Technology ◽

10.1007/978-3-540-37316-2_10 ◽

2007 ◽

pp. 287-329 ◽

Cited By ~ 4

Author(s):

Pietro Giuseppe Gucciardi ◽

Sebastiano Trusso ◽

Cirino Vasi ◽

Salvatore Patanè ◽

Maria Allegrini

Keyword(s):

Raman Spectroscopy ◽

Near Field

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Localized surface plasmon resonance shift and its application in scanning near-field optical microscopy

Journal of Materials Chemistry C ◽

10.1039/d1tc00877c ◽

2021 ◽

Author(s):

Jiawei Zhang ◽

Gitanjali Kolhatkar ◽

Andreas Ruediger

Keyword(s):

Raman Spectroscopy ◽

Surface Plasmon Resonance ◽

Surface Plasmon ◽

Plasmon Resonance ◽

Localized Surface Plasmon Resonance ◽

Near Field ◽

Localized Surface Plasmon ◽

Resonance Shift ◽

Raman Modes ◽

Tip Enhanced Raman Spectroscopy

The localized surface plasmon resonance (LSPR) position in tip-enhanced Raman spectroscopy (TERS) is of great importance to the understanding and interpretation of the relative intensity of different enhanced Raman modes....

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Raman Spectroscopy: Near-Field

Dekker Encyclopedia of Nanoscience and Nanotechnology, Third Edition ◽

10.1081/e-enn3-120013824 ◽

2014 ◽

pp. 4147-4154

Author(s):

Eric Ayars

Keyword(s):

Raman Spectroscopy ◽

Near Field

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Carbon Allotrope-Based Optical Fibers for Environmental and Biological Sensing: A Review

Sensors ◽

10.3390/s20072046 ◽

2020 ◽

Vol 20 (7) ◽

pp. 2046 ◽

Cited By ~ 1

Author(s):

Stephanie Hui Kit Yap ◽

Kok Ken Chan ◽

Swee Chuan Tjin ◽

Ken-Tye Yong

Keyword(s):

Optical Fiber ◽

Optical Fibers ◽

High Sensitivity ◽

Optical Fiber Sensors ◽

Functional Coating ◽

Fiber Sensors ◽

Carbon Allotrope ◽

Carbon Allotropes ◽

Sensing Technology ◽

Wide Range

Recently, carbon allotropes have received tremendous research interest and paved a new avenue for optical fiber sensing technology. Carbon allotropes exhibit unique sensing properties such as large surface to volume ratios, biocompatibility, and they can serve as molecule enrichers. Meanwhile, optical fibers possess a high degree of surface modification versatility that enables the incorporation of carbon allotropes as the functional coating for a wide range of detection tasks. Moreover, the combination of carbon allotropes and optical fibers also yields high sensitivity and specificity to monitor target molecules in the vicinity of the nanocoating surface. In this review, the development of carbon allotropes-based optical fiber sensors is studied. The first section provides an overview of four different types of carbon allotropes, including carbon nanotubes, carbon dots, graphene, and nanodiamonds. The second section discusses the synthesis approaches used to prepare these carbon allotropes, followed by some deposition techniques to functionalize the surface of the optical fiber, and the associated sensing mechanisms. Numerous applications that have benefitted from carbon allotrope-based optical fiber sensors such as temperature, strain, volatile organic compounds and biosensing applications are reviewed and summarized. Finally, a concluding section highlighting the technological deficiencies, challenges, and suggestions to overcome them is presented.

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