کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10410334 | 894432 | 2005 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Two photon fluorescence sensors based on resonant grating waveguide structures
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
We use novel high-finesse polymeric resonant grating waveguide structures (GWS) for strong enhancement of two photon fluorescence (TPF). At a specific wavelength and angular orientation of the incident beam, the grating waveguide structure resonates. This resonance results in a field enhancement at the surface that can be exploited for TPF spectroscopy, without the need for highly focused laser excitation light. We compare the TPF obtained from a thin layer of tetramethylrhodamine (TMR) deposited on top of a GWS at resonance and off-resonance. Our procedure and results indicate that the detection of TPF can indeed be improved with the resonant GWS by at least fifteen times. These results have been also demonstrated using a GWS and a 2 μm thick layer of TMR aqueous solution.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 107, Issue 1, 27 May 2005, Pages 121-125
Journal: Sensors and Actuators B: Chemical - Volume 107, Issue 1, 27 May 2005, Pages 121-125
نویسندگان
T. Katchalski, S. Soria, E. Teitelbaum, A.A. Friesem, G. Marowsky,