Development of LSPR based U-bent plastic optical fiber sensors

Asaithambi, Gowri; Sai, V. V. R.

doi:10.1016/j.snb.2016.02.074

Cited by 132 publications

(52 citation statements)

References 37 publications

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“…In recent years, plastic optical fibers (POFs) have been well known for their successful use as optical fiber sensors (OFS) [1,2,3]. These fibers share some attributes with glass optical fibers (GOF), such as immunity to electromagnetic fields, small size and weight, but also allow the production of low-cost sensing systems.…”

Section: Introductionmentioning

confidence: 99%

Refractive Index Sensing with D-Shaped Plastic Optical Fibers for Chemical and Biochemical Applications

Sequeira

Duarte

Bilro

et al. 2016

Sensors

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We report the optimization of the length of a D-shaped plastic optical fiber (POF) sensor for refractive index (RI) sensing from a numerical and experimental point of view. The sensing principle is based on total internal reflection (TIR). POFs with 1 mm in diameter were embedded in grooves, realized in planar supports with different lengths, and polished to remove the cladding and part of the core. All D-shaped POF sensors were tested using aqueous medium with different refractive indices (from 1.332 to 1.471) through intensity-based configuration. Results showed two different responses. Considering the refractive index (RI) range (1.33–1.39), the sensitivity and the resolution of the sensor were strongly dependent on the sensing region length. The highest sensitivity (resolution of 6.48 × 10−3 refractive index units, RIU) was obtained with 6 cm sensing length. In the RI range (1.41–1.47), the length of the sensing region was not a critical aspect to obtain the best resolution. These results enable the application of this optical platform for chemical and biochemical evanescent field sensing. The sensor production procedure is very simple, fast, and low-cost.

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Section: Introductionmentioning

confidence: 99%

Refractive Index Sensing with D-Shaped Plastic Optical Fibers for Chemical and Biochemical Applications

Sequeira

Duarte

Bilro

et al. 2016

Sensors

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“…The U‐bent POF probes were fabricated as described earlier by our group . Briefly, the POF of 25 cm length were made into U‐shape by inserting into a glass capillary tube of 1.9 mm inner diameter and followed by heating at 100°C for 10 min to obtain probe of bend diameter 1.4 mm.…”

Section: Methodsmentioning

confidence: 99%

“…POF offer distinct advantages over silica fiber including low‐cost (multi‐mode fibers in particular), ease in machinability and ruggedness in addition to comparable performance. Recently, POF has been exploited in development of plasmonic fiber optic sensors (P‐FOS) based on surface plasmon resonance (SPR) and localized SPR (LSPR) . Noble metal nanostructures were deposited on a POF surface by means of either sputter deposition or chemisorption of nanoparticles from solution phase .…”

Section: Introductionmentioning

confidence: 99%

“…[6][7][8][9] Noble metal nanostructures were deposited on a POF surface by means of either sputter deposition or chemisorption of nanoparticles from solution phase. [6,7,10] Sputter deposition on PMMA based POF is associated with formation of craters due to evaporation of water content, [10] leading to surface deformation and inconsistency in the end result. On the other hand, the chemisorption of nanoparticles requires PMMA surface modification by multi-step treatment processes to generate active functional groups on its surface [11][12][13][14] as discussed below.…”

Section: Introductionmentioning

confidence: 99%

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Self‐Assembled Polyamidoamine Dendrimer on Poly (methyl meth‐ acrylate) for Plasmonic Fiber Optic Sensors

Divagar

Jain

Satija³

et al. 2019

ChemNanoMat

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We report a novel one‐step polyamidoamine (PAMAM) dendrimer based polymethyl methacrylate (PMMA) surface functionalization strategy for the development of polymeric optical fiber (POF) based plasmonic sensors utilizing gold nanoparticles (AuNP). Simple contact angle measurements over PMMA sheets reveal the ability of the dendrimers to strongly bind to PMMA surface without additional acid/alkali pretreatment, unlike the conventional hexamethylene diamine (HMDA) based surface modification. Subsequently, U‐bent POF probes with high evanescent wave absorbance sensitivity were exploited for relative quantification of the surface amine groups using fluorescein isothiocyanate (FITC) binding and efficient chemisorption of gold nanoparticles (AuNP) in order to identify the optimum conditions viz. dendrimer concentration, incubation time and dendrimer generation. While FITC binding showed a proportional increase in amine functional density with PAMAM concentration and time, interestingly the AuNP (40 nm) binding studies revealed the formation of loose PAMAM multilayers and their desorption. PAMAM (G4) concentration as low as 5 mM and incubation time of 24 h provide faster binding rate with densely packed AuNP and the RI sensitivity of ∼15 (A546 nm/RIU). This simpler and inexpensive strategy could also be exploited for the development of functional PMMA substrates for various applications including nanotechnology, bio‐imaging, drug delivery and analytical separations.

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“…Spectroscopy offers repeatable and reliable results and has simple sample as compared to fiber optic sensors which is fragile and tedious to be fabricated [8][9]. Most Fig.…”

Section: Introductionmentioning

confidence: 99%

Characterization of ethanol concentrations at ultraviolet wavelength region

Saad¹,

El-Rahman²,

Yassin³

et al. 2018

J. Fundam and Appl Sci.

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This paper presents the measurement of optical absorption spectrum for different concentrations of ethanol at measured using portable spectroscopy setup from Avantes. ItHalogen light source and spectrometer. The light source can deliver a continuous broad spectrum ranging from 0.2 to 2.5 µm and the spectrometer has the detection range of µm. Several mixtures of ethanol in de concentrations of 0%, 0.1%, 0.5%, 1.0%, 2.5%, 5%, 10%, 15%, 25%, 50% and 100 vol%.The baseline of the absorption spectrum was being analyzed and corrected using MATLAB software. From the results, the spectroscopy setup was successfully detecting ethano concentration from 2.5-100vol%. However, only concentration range from 2.5 shown 99% of fulfilment towards the Beer's Lambert Law. Halogen light source and spectrometer. The light source can deliver a continuous broad spectrum ranging from 0.2 to 2.5 µm and the spectrometer has the detection range of µm. Several mixtures of ethanol in de-ionized water were prepared with vario concentrations of 0%, 0.1%, 0.5%, 1.0%, 2.5%, 5%, 10%, 15%, 25%, 50% and 100 vol%.he baseline of the absorption spectrum was being analyzed and corrected using MATLAB Halogen light source and spectrometer. The light source can deliver a continuous broad spectrum ranging from 0.2 to 2.5 µm and the spectrometer has the detection range of 0.2-1.1 ionized water were prepared with various concentrations of 0%, 0.1%, 0.5%, 1.0%, 2.5%, 5%, 10%, 15%, 25%, 50% and 100 vol%.he baseline of the absorption spectrum was being analyzed and corrected using MATLAB software. From the results, the spectroscopy setup was successfully detecting ethanol 100vol%. However, only concentration range from 2.5-50vol% has ultraviolet wavelength; spectroscopy; optical absorption; ethanol concentration;Research Article Special Issue M. K. A. Rahman et al.

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Development of LSPR based U-bent plastic optical fiber sensors

Cited by 132 publications

References 37 publications

Refractive Index Sensing with D-Shaped Plastic Optical Fibers for Chemical and Biochemical Applications

Refractive Index Sensing with D-Shaped Plastic Optical Fibers for Chemical and Biochemical Applications

Self‐Assembled Polyamidoamine Dendrimer on Poly (methyl meth‐ acrylate) for Plasmonic Fiber Optic Sensors

Characterization of ethanol concentrations at ultraviolet wavelength region

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