Highly sensitive, all solid state fibre optic oxygen sensor based on the sol-gel coating technique

1996 ◽  
Vol 32 (3) ◽  
pp. 240 ◽  
Author(s):  
M.K. Krihak ◽  
M.R. Shahriari
Keyword(s):  
Solid State ◽  
Oxygen Sensor ◽  
Sol Gel ◽  
Fibre Optic ◽  
Coating Technique ◽  
Highly Sensitive

LED-based fibre optic oxygen sensor using sol-gel coating

1994 ◽  
Vol 30 (11) ◽  
pp. 888 ◽  
Author(s):  
B.D. Mac Craith ◽  
G. O'Keeffe ◽  
C. McDonagh ◽  
A.K. McEvoy
Keyword(s):  
Oxygen Sensor ◽  
Sol Gel ◽  
Fibre Optic

Fabrication and performance evaluation of highly sensitive hybrid sol–gel-derived oxygen sensor films based on a fluorinated precursor

2010 ◽  
Vol 666 (1-2) ◽  
pp. 83-90 ◽  
Author(s):  
Juncal Estella ◽  
Dorota Wencel ◽  
John P. Moore ◽  
Maja Sourdaine ◽  
Colette McDonagh
Keyword(s):  
Performance Evaluation ◽  
Oxygen Sensor ◽  
Sol Gel ◽  
Highly Sensitive ◽  
And Performance

Fibre optic oxygen sensor based on fluorescence quenching of evanescent-wave excited ruthenium complexes in sol–gel derived porous coatings

The Analyst ◽  
1993 ◽  
Vol 118 (4) ◽  
pp. 385-388 ◽  
Author(s):  
Brian D. MacCraith ◽  
Colette M. McDonagh ◽  
Gerard O'Keeffe ◽  
Emmetine T. Keyes ◽  
Johannes G. Vos ◽  
...  
Keyword(s):  
Fluorescence Quenching ◽  
Evanescent Wave ◽  
Oxygen Sensor ◽  
Sol Gel ◽  
Ruthenium Complexes ◽  
Fibre Optic ◽  
Porous Coatings

The use of high-resolution FESEM to study solid-state phase transformations and reactions

1994 ◽  
Vol 52 ◽  
pp. 1028-1029
Author(s):  
P. G. Kotula ◽  
D. D. Erickson ◽  
C. B. Carter
Keyword(s):  
Solid State ◽  
High Resolution ◽  
Phase Transformations ◽  
High Efficiency ◽  
Sol Gel ◽  
Quantitative Information ◽  
Solid State Reactions ◽  
Critical Dimensions ◽  
Backscattered Electrons ◽  
Backscattered Electron

High-resolution field-emission-gun scanning electron microscopy (FESEM) has recently emerged as an extremely powerful method for characterizing the micro- or nanostructure of materials. The development of high efficiency backscattered-electron detectors has increased the resolution attainable with backscattered-electrons to almost that attainable with secondary-electrons. This increased resolution allows backscattered-electron imaging to be utilized to study materials once possible only by TEM. In addition to providing quantitative information, such as critical dimensions, SEM is more statistically representative. That is, the amount of material that can be sampled with SEM for a given measurement is many orders of magnitude greater than that with TEM.In the present work, a Hitachi S-900 FESEM (operating at 5kV) equipped with a high-resolution backscattered electron detector, has been used to study the α-Fe2O3 enhanced or seeded solid-state phase transformations of sol-gel alumina and solid-state reactions in the NiO/α-Al2O3 system. In both cases, a thin-film cross-section approach has been developed to facilitate the investigation. Specifically, the FESEM allows transformed- or reaction-layer thicknesses along interfaces that are millimeters in length to be measured with a resolution of better than 10nm.

Improved Sol-Gel Materials for Efficient Solid State Dye Lasers

1993 ◽  
Vol 329 ◽  
Author(s):  
Michael Canva ◽  
Patrick Georges ◽  
Jean-Fran^ois Perelgritz ◽  
Alain Brun ◽  
Fréddric Chaput ◽  
...  
Keyword(s):  
Solid State ◽  
Physical Properties ◽  
Room Temperature ◽  
Sol Gel ◽  
Tunable Lasers ◽  
Optical Quality ◽  
Dye Lasers ◽  
Laser Dyes ◽  
Host Matrix ◽  
Host Matrices

AbstractPhotoresistant laser dyes were trapped in silica based xerogel host matrices to obtain solid state tunable lasers. For this purpose very dense xerogel samples with improved chemical and physical properties were prepared at room temperature by the sol-gel technology. The as-prepared materials were polished to obtain optical quality surfaces and were used as new lasing media.Lasing action of such different dyes as rhodamine, perylene and pyrromethene doping dense sol-gel matrices was demonstrated. Efficiencies of 30 % or lifetimes of more than 100,000 shots were achieved with different new ≤dye dopant/host matrix≥ couples. Their different performances are reviewed and discussed.

Electrical assessment of brownmillerite-type calcium ferrite materials obtained by proteic sol-gel route and by solid-state reaction using mollusk shells

2021 ◽  
pp. 122172
Author(s):  
Chrystian G.M. Lima ◽  
Allan J.M. Araújo ◽  
Rinaldo M. Silva ◽  
Rafael A. Raimundo ◽  
João P.F. Grilo ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Sol Gel ◽  
Calcium Ferrite ◽  
Mollusk Shells

scholarly journals Development of Adhesive, Bioactive and Antibacterial Titania Sol-Gel Coating on Titanium Substrate by Dip-Coating Technique

Coatings ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 243
Author(s):  
Diana Horkavcová ◽  
Quentin Doubet ◽  
Gisèle Laure Lecomte-Nana ◽  
Eva Jablonská ◽  
Aleš Helebrant
Keyword(s):  
Simulated Body Fluid ◽  
Body Fluid ◽  
Sol Gel ◽  
Titanium Substrate ◽  
Dip Coating ◽  
Coating Technique ◽  
Metal Implants ◽  
Excellent Adhesion ◽  
Titania Sol ◽  
Dip Coating Technique

The sol-gel method provides a wide variety of applications in the medical field. One of these applications is the formation of coatings on the metal implants. The coatings containing specific additive can enhance or improve the existing surface properties of the substrate. In this work, titania sol-gel coatings were doped with two forms of silver (AgNO3, Ag3PO4) and synthetic hydroxyapatite and applied on the titanium samples by dip-coating technique. After drying and slow firing, all coatings were characterized with scanning electron microscopy. Thin coatings were successfully prepared with excellent adhesion to the substrate (measured by ASTM D 3359-2), despite cracks. Coatings containing silver and hydroxyapatite demonstrated a 100% antibacterial effect against Escherichia coli after 24 h. The bioactivity of the coatings containing hydroxyapatite tested in modified simulated body fluid under static-dynamic conditions was confirmed by bone-like hydroxyapatite precipitation. To better understand the interaction of the coatings with simulated body fluid (SBF), changes of Ca2+ and (PO4)3− ions concentrations and pH values were studied.

Sign in / Sign up

Export Citation Format

Share Document