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- DOI: 10.1039/c3an36714b
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A novel leaky waveguide grating (LWG) device for evanescent wave broadband absorption spectroscopy in microfluidic flow cells
Analyst (Cambridge, U. K.). 2013;138(6):1803-1811.
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Full-text held externally
- DOI: 10.1039/c3an36714b
Abstract
Evanescent wave broadband absorption spectroscopy is commonly interfaced with a range of anal. systems, including microfluidic flow cells, for identification and quantitation of species. A miniaturized spectrometer integrated with a microfluidic flow cell is useful to permit on-site anal. of samples. A novel LWG device, which is able to obtain an absorption spectrum of an analyte of interest (in this case, methylene blue) without an external spectrometer, is reported. At 600 nm, the spectral resoln. and the min. detectable absorption coeff. of the LWG device is 49.5 nm and 1.65 cm-1, resp. The LWG can be fabricated on birefringent substrates such as plastics because the performance of the device is independent of the polarization of the excitation source. The LWG device was fabricated using microcontact printing and hence can be easily mass produced. [on SciFinder(R)]
Keyword(s)
Diffraction gratings (leaky waveguide device for evanescent wave broadband absorption spectroscopy in microfluidic flow cells) ; Evanescent wave (leaky waveguide grating device in microfluidic flow cells for broadband absorption spectroscopy of) ; Microfluids (leaky waveguide grating device for evanescent wave broadband absorption spectroscopy in flow cells for) ; Optical waveguides (leaky grating device for evanescent wave broadband absorption spectroscopy in microfluidic flow cells) ; Spectrometers (cells; UV and visible spectroscopy; UV-visible spectrometers (leaky waveguide grating device in microfluidic flow cells for evanescent wave broadband) ; leaky waveguide grating device for evanescent wave broadband absorption spectroscopy in microfluidic flow) ; leaky waveguide grating evanescent wave UV microfluidic flow cell
Bibliographic metadata
- CAN 158:374123 Optical, Electron, and Mass Spectroscopy and Other Related Properties 61-73-4 (Methylene blue) Role: ANT (Analyte), PRP (Properties), ANST (Analytical study) (leaky waveguide grating device in microfluidic flow cells for evanescent wave broadband UV spectra of)