Trapping Mechanisms and Delayed Recombination Processes in Scintillating Ce-Doped Sol–Gel Silica Fibers

2021 ◽  
Author(s):  
Francesca Cova ◽  
Federico Moretti ◽  
Christophe Dujardin ◽  
Norberto Chiodini ◽  
Anna Vedda
Keyword(s):  
Sol Gel ◽  
Silica Fibers ◽  
Recombination Processes

Controlling apatite microparticles formation by calcining electrospun sol–gel derived ultrafine silica fibers

2011 ◽  
Vol 61 (2) ◽  
pp. 374-380 ◽  
Author(s):  
Shinji Sakai ◽  
Tetsu Yamaguchi ◽  
Ryan Anugrah Putra ◽  
Rie Watanabe ◽  
Masaaki Kawabe ◽  
...  
Keyword(s):  
Sol Gel ◽  
Silica Fibers ◽  
Ultrafine Silica

scholarly journals Radiation hardness of Ce-doped sol-gel silica fibers for high energy physics applications

2018 ◽  
Vol 43 (4) ◽  
pp. 903 ◽  
Author(s):  
Francesca Cova ◽  
Federico Moretti ◽  
Mauro Fasoli ◽  
Norberto Chiodini ◽  
Kristof Pauwels ◽  
...  
Keyword(s):  
High Energy Physics ◽  
Sol Gel ◽  
High Energy ◽  
Radiation Hardness ◽  
Silica Fibers ◽  
Energy Physics

Optical properties of Nd3+-doped silica fibers obtained by sol-gel method

2000 ◽  
Vol 300-301 ◽  
pp. 459-463 ◽  
Author(s):  
W Strek ◽  
E Pawlik ◽  
P Dereń ◽  
A Bednarkiewicz ◽  
J Wojcik ◽  
...  
Keyword(s):  
Optical Properties ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Silica Fibers

Preliminary Study on Tensile Properties of Electrospun Silica Fibers/Polypropylene Composites

2017 ◽  
Vol 886 ◽  
pp. 3-7
Author(s):  
Panitarn Wanakamol ◽  
Wichuda Boonyaratgalin ◽  
Nopmanee Supanam
Keyword(s):  
Glass Fibers ◽  
Sol Gel ◽  
Tensile Modulus ◽  
Tensile Tests ◽  
Fiber Content ◽  
Silica Fiber ◽  
Electrospinning Technique ◽  
Fiber Mats ◽  
Silica Fibers ◽  
Silica Precursor

Composites based on silica and glass fibers conventionally contain fibers with dimension in the range of a few micrometers to millimeters. Electrospinning technique allows fabrication of fibers in the submicron length scale. With smaller dimension, these fibers when applied as reinforcement in composites may yield interesting composite properties. In this paper, silica fibers fabricated via electrospinning were utilized as reinforcement in polypropylene-matrixed composites. The silica precursor was prepared by sol-gel reaction of tetraethyl orthosilicate, ethyl alcohol, de-ionized water and hydrochloric acid. Viscous silica precursor was made into fibers by electrospinning with electric field of 1 kV/cm. Electrospun non-woven fiber mats were stabilized at 200°C and calcined at 800°C to remove remaining organic residues. The fiber diameter average was 279±40 nm. In the process of making composites, the silica fiber mats were sandwiched between polypropylene sheets, and the layers were compression-molded together. The composite samples with varied silica fiber contents up to 2 wt% were mechanically tested. Tensile tests demonstrate slight increases in tensile modulus, tensile strength with increasing silica fiber content. However, silica fiber content within the experimental range does not have prominent effects on yield strength and strain at break.

Silica fibers doped with erbium ions obtained by the sol gel method

1997 ◽  
Author(s):  
Elzbieta M. Beres-Pawlik ◽  
Wieslaw Strek ◽  
Jan Wojcik ◽  
C. Wojciechowski ◽  
G. E. Malashkevich ◽  
...  
Keyword(s):  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Erbium Ions ◽  
Silica Fibers

scholarly journals Photodarkening-resistance improvement of Yb3+/Al3+ co-doped silica fibers fabricated via sol-gel method

2018 ◽  
Vol 26 (22) ◽  
pp. 28506 ◽  
Author(s):  
Fenghou Xie ◽  
Chongyun Shao ◽  
Meng Wang ◽  
Qinling Zhou ◽  
Fengguang Lou ◽  
...  
Keyword(s):  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Silica Fibers ◽  
Co Doped ◽  
Resistance Improvement

Effects of Calcination Temperature on Electrospun Silica Fibers

2012 ◽  
Vol 488-489 ◽  
pp. 602-606 ◽  
Author(s):  
Nuttaya Pramuansub ◽  
Piyada Jittangprasert ◽  
Panitarn Wanakamol
Keyword(s):  
Calcination Temperature ◽  
Sol Gel ◽  
Precursor Solution ◽  
Average Diameter ◽  
Silica Content ◽  
Silica Fibers ◽  
Different Temperatures ◽  
Ft Ir ◽  
Viscous Solution ◽  
Long Fibers

Silica fibers have been fabricated via sol-gel reaction and electrospinning. The precursor solution was prepared from tetraethyl-orthosilicate (TEOS), ethanol and aqueous hydrochloric acid. The viscous solution was electrospun at 15kV applied voltage and 20 cm tip-to-collector distance. The process yielded nonwoven sheet of silica fibers with good mechanical integrity. The silica fiber specimens were calcined at different temperatures: 400°C, 600°C and 800°C. Scanning electron microscope (SEM) observation reveals smooth and long fibers with average diameter below 0.5μm for all samples, both as spun and calcined. Fourier transform infrared spectroscopy (FT-IR) spectra show effects of calcination temperature on chemical structure of the fibers. Calcination results in the removal of organic residuals and leaving mostly silica content

Titania-Doped Silica Fibers Prepared by Electrospinning and Sol-Gel Process

2004 ◽  
Vol 30 (3) ◽  
pp. 215-221 ◽  
Author(s):  
Sung-Seen Choi ◽  
Boyoung Chu ◽  
Seung Goo Lee ◽  
Sung Wook Lee ◽  
Sung Soon Im ◽  
...  
Keyword(s):  
Sol Gel ◽  
Silica Fibers ◽  
Sol Gel Process
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