Quantum dots as self-referenced optical fibre temperature probes for luminescent chemical sensors

• Type: Article in International Scientific Journal
• Date: 2006

Authors

Jorge, PAS (Author) Other; Mayeh, M (Author) Other; Benrashid, R (Author) Other; Caldas, P (Author) Other; Santos, JL (Author) FCUP; Farahi, F (Author) Other

Journal

Title: Measurement Science and Technology

Vol. 17

Pages: 1032-1038

ISSN: 0957-0233

Publisher: Institute of Physics Publishing

Indexing

ISI Web of Knowledge - 49 Citations

Scopus - 56 Citations

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

Other information

Authenticus ID: P-004-M1S

DOI: 10.1088/0957-0233/17/5/s16

Abstract (EN): The use of semiconductor nano-particles as temperature probes in luminescence chemical sensing applications is addressed. Temperature changes the intensity, the peak wavelength and the spectral width of the quantum dots luminescent emission in a linear and reversible way. Results are presented that show the feasibility of implementing a self-referenced intensity-based sensor to perform temperature measurements independent of the optical power level in the sensing system. A resolution of 0.3 degrees C was achieved. In addition, it is demonstrated that self-referenced temperature measurements at multiple points could be performed using reflection or transmission based optical fibre configurations.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7