Expression of concern for 'Comparison of photo- and Cu(I)-catalyzed "click" chemistries for the formation of carbohydrate SPR interfaces' by Nazek Maalouli , , 2013, , 805-812, https://doi.org/10.1039/C2AN36272D.
View Article and Find Full Text PDFOptical sensors constitute attractive alternatives to resistive probes for the sensing and monitoring of temperature (). In this work, we investigated, in the range from 2 to 300 K, the thermal behavior of Yb ion photoluminescence (PL) in glass hosts for cryogenic thermometry. To that end, two kinds of Yb-doped preforms, with aluminosilicate and aluminophosphosilicate core glasses, were made using the modified chemical vapor deposition (MCVD) technique.
View Article and Find Full Text PDFCerium-doped-silica glasses are widely used as ionizing radiation sensing materials. However, their response needs to be characterized as a function of measurement temperature for application in various environments, such as in vivo dosimetry, space and particle accelerators. In this paper, the temperature effect on the radioluminescence (RL) response of Cerium-doped glassy rods was investigated in the 193-353 K range under different X-ray dose rates.
View Article and Find Full Text PDFThe radiation-induced emission (RIE) of Gd-doped sol-gel silica glass has been shown to have suitable properties for use in the dosimetry of beams of ionizing radiation in applications such as radiotherapy. Linear electron accelerators are commonly used as clinical radiotherapy beams, and in this paper, the RIE properties were investigated under electron irradiation. A monochromator setup was used to investigate the light properties in selected narrow wavelength regions, and a spectrometer setup was used to measure the optical emission spectra in various test configurations.
View Article and Find Full Text PDFRadiation-induced emission of doped sol-gel silica glass samples was investigated under a pulsed 20-MeV electron beam. The studied samples were drawn rods doped with cerium, copper, or gadolinium ions, which were connected to multimode pure-silica core fibers to transport the induced luminescence from the irradiation area to a signal readout system. The luminescence pulses in the samples induced by the electron bunches were studied as a function of deposited dose per electron bunch.
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