Ethanol concentration measurement by Raman spectroscopy in liquid-core microstructured optical fiber

Author(s):  
Chiara Meneghini ◽  
Serge Caron ◽  
Antoine Proulx ◽  
Frédéric Émond ◽  
Patrick Paradis ◽  
...  
2008 ◽  
Vol 8 (7) ◽  
pp. 1250-1255 ◽  
Author(s):  
Chiara Meneghini ◽  
Serge Caron ◽  
Anne Claire Jacob Poulin ◽  
Antoine Proulx ◽  
FrÉdÉric Emond ◽  
...  

2016 ◽  
Vol 28 (6) ◽  
pp. 609-612 ◽  
Author(s):  
Wenyuan Wang ◽  
Xiaojin Yin ◽  
Jian Wu ◽  
Youfu Geng ◽  
Xiaoling Tan ◽  
...  

Chemosensors ◽  
2020 ◽  
Vol 8 (1) ◽  
pp. 21 ◽  
Author(s):  
Mark R. Pollard ◽  
Katia Sparnacci ◽  
Lars J. Wacker ◽  
Hugo Kerdoncuff

We present a measurement technique for chemical identification and concentration measurement of polymer nanoparticles in aqueous solution, which is achieved using Raman spectroscopy. This work delivers an improvement in measurement sensitivity of 40 times over conventional Raman measurements in cuvettes by loading polymer nanoparticles into the hollow core of a microstructured optical fiber. We apply this “fiber-enhanced” system to measure the concentration of two separate samples of polystyrene particles (diameters of 60 nm and 120 nm respectively) with concentrations in the range from 0.07 to 0.5 mg/mL. The nanoliter volume formed by the fiber presents unique experimental conditions where nanoparticles are confined within the fiber core and prevented from diffusing outside the incident electromagnetic field, thereby enhancing their interaction. Our results suggest an upper limit on the size of particle that can be measured using the hollow-core photonic crystal fiber, as the increasing angular distribution of scattered light with particle size exceeds the acceptance angle of the liquid-filled fiber. We investigate parameters such as the fiber filling rate and optical properties of the filled fiber, with the aim to deliver repeatable and quantifiable measurements. This study thereby aids the on-going process to create compact systems that can be integrated into nanoparticle production settings for in-line measurements.


2019 ◽  
Vol 37 (13) ◽  
pp. 2981-2988 ◽  
Author(s):  
Mikel Azkune ◽  
Timea Frosch ◽  
Eneko Arrospide ◽  
Gotzon Aldabaldetreku ◽  
Inaki Bikandi ◽  
...  

2001 ◽  
Vol 55 (4) ◽  
pp. 373-381 ◽  
Author(s):  
Robert Altkorn ◽  
Michelle Duval Malinsky ◽  
Richard P. Van Duyne ◽  
Ilia Koev

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