Intensity based luminescent optical fiber oxygen sensor using quantum dots

Pedro Jorge; M. Mayeh; R. Benrashid; P. Caldas; J. L. Santos; Faramarz Farahi

doi:10.1117/12.623643

23 May 2005 Intensity based luminescent optical fiber oxygen sensor using quantum dots

Pedro Jorge, M. Mayeh, R. Benrashid, P. Caldas, J. L. Santos, Faramarz Farahi

Proceedings Volume 5855, 17th International Conference on Optical Fibre Sensors; (2005) https://doi.org/10.1117/12.623643
Event: 17th International Conference on Optical Fibre Sensors, 2005, Bruges, Belgium

Abstract

The suitability of semiconductor nanoparticles to provide a reference signal in luminescence based chemical sensors is addressed. A CdSe-ZnS nanocrystal, with emission peak at 520 nm is used to provide a reference signal. Measurements of oxygen concentration, which are based on the dynamic quenching of the luminescence of a Ruthenium complex, are performed. Both dye and the nanocrystal are immobilized in a sol-gel matrix and are excited by a blue LED. Results are presented showing that the ratio between the reference and the sensor signals is highly insensitive to fluctuations of the excitation optical power. Preliminary results show that nanocrystals could be used to measure temperature and provide a reference signal.

Citation Download Citation

Pedro Jorge, M. Mayeh, R. Benrashid, P. Caldas, J. L. Santos, and Faramarz Farahi "Intensity based luminescent optical fiber oxygen sensor using quantum dots", Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); https://doi.org/10.1117/12.623643

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available