MyJournals Home  

RSS FeedsSensors, Vol. 19, Pages 4911: Combination of an Axicon Fiber Tip and a Camera Device into a Sensitive Refractive Index Sensor (Sensors)

 
 

11 november 2019 13:04:52

 
Sensors, Vol. 19, Pages 4911: Combination of an Axicon Fiber Tip and a Camera Device into a Sensitive Refractive Index Sensor (Sensors)
 


An axicon fiber tip combined with a camera device is developed to sensitively detect refractive indexes in solutions. The transparent axicon tips were made by etching optical fibers through a wet end-etching method at room temperature. When the axicon fiber tip was immersed in various refractive index media, the angular spectrum of the emitted light from the axicon fiber tip was changed. Using a low numerical aperture lens to collect the directly transmitted light, a high intensity sensitivity was achieved when the tip cone angle was about 35 to 40 degrees. We combined the axicon fiber tip with a laser diode and a smartphone into a portable refractometer. The front camera of the smartphone was used to collect the light emitted from the axicon fiber tip. By analyzing the selected area of the captured images, the refractive index can be distinguished for various solutions. The refractive index sensitivity was up to 56,000%/RIU, and the detection limit was 1.79 × 10−5 RIU. By measuring the refractive index change via the axicon fiber tip, the concentration of different mediums can be sensitively detected. The detection limits of the measurement for sucrose solutions, saline solutions, and diluted wine were 8.86 × 10−3 °Bx, 0.12‰, and 0.35%, respectively.


 
201 viewsCategory: Chemistry, Physics
 
Sensors, Vol. 19, Pages 4912: Error Overboundings of KF-Based IMU/GNSS Integrated System Against IMU Faults (Sensors)
[ASAP] Attraction between Like-Charged Macroions Mediated by Specific Counterion Configurations (Journal of Physical Chemistry B)
 
 
blog comments powered by Disqus


MyJournals.org
The latest issues of all your favorite science journals on one page

Username:
Password:

Register | Retrieve

Search:

Physics


Copyright © 2008 - 2024 Indigonet Services B.V.. Contact: Tim Hulsen. Read here our privacy notice.
Other websites of Indigonet Services B.V.: Nieuws Vacatures News Tweets Nachrichten