Extraction of thickness and fluorophore concentration of the upper layer in a two-layered solid phantom using spatially resolved fluorescence spectroscopy

2020 ◽  
Author(s):  
Shivam Shukla ◽  
Pankaj P. Singh ◽  
Prabodh K. Pandey ◽  
Asima Pradhan
Keyword(s):  
Fluorescence Spectroscopy ◽  
Spatially Resolved ◽  
Layered Solid

scholarly journals Collimated dual species oven source and its characterisation via spatially resolved fluorescence spectroscopy

2018 ◽  
Vol 51 (10) ◽  
pp. 105602 ◽  
Author(s):  
N Cooper ◽  
E Da Ros ◽  
J Nute ◽  
D Baldolini ◽  
P Jouve ◽  
...  
Keyword(s):  
Fluorescence Spectroscopy ◽  
Spatially Resolved

X-Ray Spectrometry Study on Historical Decorative Glasses in Thailand: Lanna-Style Glass

2012 ◽  
Vol 620 ◽  
pp. 330-334
Author(s):  
Pisutti Dararutana ◽  
Krit Won-In ◽  
Sawet Intarasiri ◽  
Teerasak Kamwanna ◽  
Somchai Tancharakorn ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Fluorescence Spectroscopy ◽  
Emission Spectroscopy ◽  
Complex Nature ◽  
Complementary Information ◽  
X Ray ◽  
Analytical Instruments ◽  
Spatially Resolved ◽  
Historical Objects ◽  
Glassy Materials

t was known that historical objects were highly heterogeneous. Due to the complex nature of materials and objects, extremely sensitive, spatially resolved, multi-elemental and versatile analytical instruments were needed. The techniques employed should be as a noninvasive as possible and able to give complementary information from macroscopic to nanometer scales. In this work, X-ray based spectroscopy including energy dispersive X-ray fluorescence spectroscopy (EDS), Proton-induced X-ray emission spectroscopy (PIXE), and micro-beam X-ray fluorescence spectroscopy (µ-XRF) were used to analyze chemical composition of the Lanna-style glass. Microstructure was also studied. It can be concluded that these techniques in combination are powerful for the investigation of heterogeneous glassy materials.

scholarly journals Laser Confocal and Spatially-Resolved Fluorescence Spectroscopy of Porphyrin Distribution on Plasma Deposited Polymer Films

2008 ◽  
Vol 1 (1) ◽  
pp. 59-67
Author(s):  
Eduard I. Zenkevich ◽  
Joerg Martin ◽  
Christian von Borczyskowski ◽  
Tatjana A. Ageeva ◽  
Valery A. Titov ◽  
...  
Keyword(s):  
Fluorescence Spectroscopy ◽  
Polymer Films ◽  
Spatially Resolved

Spatially Resolved Stress Analysis in Al2O3/3Y-TZP Multilayered Composite Using Confocal Fluorescence Spectroscopy

2005 ◽  
Vol 59 (8) ◽  
pp. 1042-1048 ◽  
Author(s):  
Wenliang Zhu ◽  
Giuseppe Pezzotti
Keyword(s):  
Fluorescence Spectroscopy ◽  
Finite Volume ◽  
Response Function ◽  
Cell Model ◽  
Scattered Light ◽  
Fluorescence Emission ◽  
Stress Fields ◽  
Local Weight ◽  
Probe Depth ◽  
Spatially Resolved

Fluorescence piezo-spectroscopy (PS) was applied to evaluate the residual stress fields stored in a multilayered Al2O3/3Y-TZP (3 mol % Y2O3-stabilized ZrO2) composite using the chromophoric fluorescence spectra of Al2O3. The PS results were compared with a theoretical stress distribution in the laminate, calculated according to a repeating unit cell model. However, in practical fluorescence spectroscopy, each measurement point corresponded to a finite volume of material, within which the scattered light experienced fluorescence wavelengths characteristic of the local (weight-average) stress fields. Because of the finite volume of material probed in PS measurements, a comparison between the experimental and calculated values requires that the calculated stresses be convoluted according to the depth-response function of the probe. A pinhole aperture incorporated in the Raman microprobe was used to control the collection probe depth and to modulate the portion of the whole fluorescence emission reaching the detector. According to calibrations of the probe depth and probe response function, probe-convoluted stresses were obtained and a spatially resolved mapping of residual stresses could be obtained.

Practical Determination of Flame Species via Laser Saturation Fluorescence Spectroscopy

1982 ◽  
Vol 36 (2) ◽  
pp. 106-110 ◽  
Author(s):  
B. T. Ahn ◽  
G. J. Bastiaans ◽  
F. Albahadily
Keyword(s):  
Fluorescence Spectroscopy ◽  
High Power ◽  
Laser Excitation ◽  
Pulsed Laser ◽  
Oh Radical ◽  
Collisional Quenching ◽  
Spatially Resolved ◽  
Molecular Fluorescence

The observation of molecular fluorescence caused by high-power pulsed laser excitation has been found to be an accurate technique for the determination of relative OH radical concentrations on a spatially resolved basis in a circular air-acetylene flame. It was found that the high power of radiational excitation used allowed fluorescence saturation to be approached. Theory then predicts fluorescence intensities to be independent of temperature and collisional quenching effects. However accurate estimates of relative concentrations can not be obtained unless corrections are made for incomplete saturation and postfilter effects. Procedures for conveniently applying such corrections are reported.

scholarly journals Spatially resolved coherent 2D fluorescence spectroscopy within a high-NA microscope

2019 ◽  
Vol 205 ◽  
pp. 03014
Author(s):  
Donghai Li ◽  
Matthias Nuss ◽  
Sebastian Goetz ◽  
Verena Kolb ◽  
Jens Pflaum ◽  
...  
Keyword(s):  
Fluorescence Spectroscopy ◽  
Spatial Resolution ◽  
Fluorescence Detection ◽  
Nonlinear Optical ◽  
Electronic Devices ◽  
Nonlinear Optical Response ◽  
Two Dimensional ◽  
Spatially Resolved ◽  
Heterogeneous Film ◽  
Sub Wavelength

We have developed coherent two-dimensional (2D) fluorescence micro-spectroscopy which probes the nonlinear optical response at surfaces via fluorescence detection with sub-micron spatial resolution. This enables the investigation of microscopic variations in laterally heterogeneous film samples which are of interests for sub-wavelength opto-electronic devices.

Characterization of Rhodamine 6G Release in Electrospray Ionization by Means of Spatially Resolved Fluorescence Spectroscopy

2011 ◽  
Vol 225 (9-10) ◽  
pp. 1055-1072
Author(s):  
Daniel Riebe ◽  
Martin Zühlke ◽  
Karl Zenichowski ◽  
Toralf Beitz ◽  
Carsten Dosche ◽  
...  
Keyword(s):  
Fluorescence Spectroscopy ◽  
Electrospray Ionization ◽  
Rhodamine 6G ◽  
Spatially Resolved
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