The Optical Fiber Tip: An Inherently Light‐Coupled Microscopic Platform for Micro‐ and Nanotechnologies

Kostovski, Gorgi; Stoddart, Paul R.; Mitchell, Arnan

doi:10.1002/adma.201304605

Cited by 187 publications

(120 citation statements)

References 173 publications

(367 reference statements)

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“…These approaches offer new exciting possibilities for advanced devices based on optical fi bers. [21][22][23][24] Optical-fi ber based SERS sensing [15][16][17][18][19][20] is one of the main branches in the fi eld of "Lab on Fiber" that attempts to combine the advantages of both SERS and optical fi bers to achieve powerful, fl exible, robust and miniaturized spectroscopic tools for remote and highly sensitive detection of low concentration molecular analytes in various, even harsh environments. Each of these fi elds of application is broad and requires in-depth investigations to tap the full potential of such devices.…”

Section: Introductionmentioning

confidence: 99%

Demonstration of a 3D Radar‐Like SERS Sensor Micro‐ and Nanofabricated on an Optical Fiber

Xie

Feng

Wang

et al. 2015

Advanced Optical Materials

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A 3D surface‐enhanced Raman scattering (SERS) sensor is realized on the facet of an optical fiber. A SERS radar configuration consisting of a parabolic mirror and a 3D spherical SERS body is designed. The parabolic mirror is used to focus the excitation laser light onto the surface of the SERS body, and to collect and reflect the Raman scattered light back into the optical fiber. The SERS body's surface consists of microscale trenches and is covered with gold nanogratings and nanoparticles on a thick gold film with a thin SiO2 spacer. Nanoscale 3D printing technology, thermal evaporation, and UV laser pulse irradiation are used to fabricate and metalize the mold of the 3D SERS radar configuration. The performance of this Au‐based SERS fiber sensor is competitive with those of Ag‐based SERS fiber sensors reported in the literature. It exhibits a detection limit of 10−6m for crystal violet in ethanol using 30 mW of 785 nm excitation (off resonance with the crystal violet electronic absorption) and 10 s acquisition time. Such a 3D scheme expands the design possibilities of SERS nanostructures on the facets of optical fibers enormously.

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Section: Introductionmentioning

confidence: 99%

Demonstration of a 3D Radar‐Like SERS Sensor Micro‐ and Nanofabricated on an Optical Fiber

Xie

Feng

Wang

et al. 2015

Advanced Optical Materials

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“…With the help of SPs, sensors with excellent sensing ability and ultra-thin film configurations have been demonstrated, including SP resonance [6], localized SP [7], and plasmonic interferometer based sensors [8]. Recently, the facet of an optical fiber tip is found to be an appealing platform to integrate plasmonic structures for sensing applications [9,10]. However, all of these sensors are either limited to single parameter sensing or can be sensitive to multiple parameters but are not capable of distinguishing different parameters.…”

Section: Introductionmentioning

confidence: 99%

On-fiber plasmonic interferometer for multi-parameter sensing

et al. 2015

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We demonstrate a novel miniature multi-parameter sensing device based on a plasmonic interferometer fabricated on a fiber facet in the optical communication wavelength range. This device enables the coupling between surface plasmon resonance and plasmonic interference in the structure, which are the two essential mechanisms for multi-parameter sensing. We experimentally show that these two mechanisms have distinctive responses to temperature and refractive index, rendering the device the capability of simultaneous temperature and refractive index measurement on an ultra-miniature form factor. A high refractive index sensitivity of 220 nm per refractive index unit (RIU) and a high temperature sensitivity of -60 pm/ °C is achieved with our device.

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“…Novel techniques have emerged to functionalize the tip of optical fibers, [5][6][7] or depositing materials onto [8] or within the pores [9][10][11][12][13] of microstructured fibers. Such multifunctional fibers are envisioned as a novel generation of probes in imaging and endoscopic systems, in photonic interconnects, flexible logic systems or advanced opto-and microfluidic configurations.…”

mentioning

confidence: 99%

Controlled Sub‐Micrometer Hierarchical Textures Engineered in Polymeric Fibers and Microchannels via Thermal Drawing

Nguyen‐Dang

Luca

Yan

et al. 2017

Adv Funct Materials

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The controlled texturing of surfaces at the micro‐ and nanoscales is a powerful method for tailoring how materials interact with liquids, electromagnetic waves, or biological tissues. The increasing scientific and technological interest in advanced fibers and fabrics has triggered a strong motivation for leveraging the use of textures on fiber surfaces. Thus far however, fiber‐processing techniques have exhibited an inherent limitation due to the smoothing out of surface textures by polymer reflow, restricting achievable feature sizes. In this article, a theoretical framework is established from which a strategy is developed to reduce the surface tension of the textured polymer, thus drastically slowing down thermal reflow. With this approach the fabrication of potentially kilometers‐long polymer fibers with controlled hierarchical surface textures of unprecedented complexity and with feature sizes down to a few hundreds of nanometers is demonstrated, two orders of magnitude below current configurations. Using such fibers as molds, 3D microchannels are also fabricated with textured inner surfaces within soft polymers such as poly(dimethylsiloxane), at dimensions and a degree of simplicity impossible to reach with current techniques. This strategy for the texturing of high curvature surfaces opens novel opportunities in bioengineering, regenerative scaffolds, microfluidics, and smart textiles.

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The Optical Fiber Tip: An Inherently Light‐Coupled Microscopic Platform for Micro‐ and Nanotechnologies

Cited by 187 publications

References 173 publications

Demonstration of a 3D Radar‐Like SERS Sensor Micro‐ and Nanofabricated on an Optical Fiber

Demonstration of a 3D Radar‐Like SERS Sensor Micro‐ and Nanofabricated on an Optical Fiber

On-fiber plasmonic interferometer for multi-parameter sensing

Controlled Sub‐Micrometer Hierarchical Textures Engineered in Polymeric Fibers and Microchannels via Thermal Drawing

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