Title :
Photobleaching effects in organic thin film sensing probes
Author :
Ferrari, Luca ; Rovati, Luigi ; Fabbri, Paola ; Pilati, Francesco
Author_Institution :
Dept. of Inf. Eng., Univ. of Modena & Reggio Emilia, Modena, Italy
Abstract :
The phenomenon of photobleaching of fluorescence indicators in organic thin films is presented. The study is performed on the fluorescein methacrylate indicator immobilized in an acrylate matrix. A LED based interrogation setup has been realized to evaluate the effects of photobleaching. The experimental results show as stability and drift of the fluorescence signal induced by photobleaching are the most critical aspects in sensing applications.
Keywords :
light emitting diodes; optical saturable absorption; probes; thin film sensors; acrylate matrix; based interrogation setup; fluorescein methacrylate indicator; fluorescence signal; organic thin film sensing probes; photobleaching effects; stability; Light emitting diodes; Optical sensors; Photobleaching; Polymers; Sensor phenomena and characterization; Temperature measurement;
Conference_Titel :
Instrumentation and Measurement Technology Conference (I2MTC), 2012 IEEE International
Conference_Location :
Graz
Print_ISBN :
978-1-4577-1773-4
DOI :
10.1109/I2MTC.2012.6229357
