scholarly journals COMPARISON OF OPTICAL METHODS FOR CHARACTERIZATION OF GLASS MOSAIC WEATHERING

2016 ◽  
Vol 3 ◽  
pp. 30-34
Author(s):  
Vladimir Kocour ◽  
Veronika Petranova ◽  
Jaroslav Valach
Keyword(s):  
White Light ◽  
Scanning Probe Microscopy ◽  
Optical Methods ◽  
Polymeric Coating ◽  
White Light Interferometry ◽  
Advantages And Disadvantages ◽  
Protective Polymeric Coating ◽  
Term Monitoring

The work presented in this paper is a part of research project supported by Ministry of Culture and devoted to conservation of precious mosaic of "Last Judgement" on St. Vitus Cathedral in Prague. The aim of the project is to enhance external protective polymeric coating on glass tesserae of mosaic and also to develop optical method for assessment of coating’s surface conditions. The paper concentrates on comparison of various methods for surface evaluation assesses their advantages and disadvantages and also discusses their suitability for long term monitoring of coating state, namely reflectometry, scanning probe microscopy, nanoindentation, white-light interferometry, and scanning electron microscopy. It is found that white-light interferometry and reflectometry methods are the most suitable ones for monitoring purposes.

Measuring complex for monitoring carbon dioxide in air

2021 ◽  
pp. 68-71
Author(s):  
Igor M. Ageev ◽  
Yuri M. Rybin
Keyword(s):  
Carbon Dioxide ◽  
High Selectivity ◽  
Distilled Water ◽  
Measuring Systems ◽  
Advantages And Disadvantages ◽  
Measuring Complex ◽  
Co2 Level ◽  
Carbon Dioxide Co2 ◽  
Term Monitoring

The advantages and disadvantages of infrared and electrochemical gas analyzers for carbon dioxide CO2 are described. The possibility of using conductometric sensors with distilled water for monitoring the CO2 content in the air has been investigated. Two identical measuring systems were manufactured, each containing two open-type conductometric cells, a matching device and a personal computer. With the help of these complexes, experiments were carried out on the simultaneous measurement of the CO2 content in the air in two places (a laboratory room and a building in a forest, located at a distance of 15 km from each other) with deliberately different daily dynamics of the CO2 level change. A special experiment was carried out, which made it possible to obtain an estimate of the inertia of conductometric cells and a conversion factor for the values of CO2 content into standard units of measurement. It is shown that the daily dynamics of changes in the electrical conductivity of distilled water in open cells corresponds to the expected dynamics of changes in the CO2 content in the rooms where the measurements were carried out. The operability of the measuring complex and the possibility of creating on its basis a device for long-term monitoring of the CO2 content in the air mixture of gases has been confirmed. The principal high selectivity of the measuring complex to CO2 in relation to other gases of the atmosphere has been established.

Characterization of birefringence dispersion in polarization-maintaining fibers by use of white-light interferometry

2007 ◽  
Vol 46 (19) ◽  
pp. 4073 ◽  
Author(s):  
Feng Tang ◽  
Xiang-zhao Wang ◽  
Yimo Zhang ◽  
Wencai Jing
Keyword(s):  
White Light ◽  
White Light Interferometry ◽  
Polarization Maintaining

scholarly journals Quantitative mode quality characterization of fibers with extremely large mode areas by matched white-light interferometry

2014 ◽  
Vol 22 (12) ◽  
pp. 14657 ◽  
Author(s):  
Fanting Kong ◽  
Guancheng Gu ◽  
Thomas W. Hawkins ◽  
Joshua Parsons ◽  
Maxwell Jones ◽  
...  
Keyword(s):  
White Light ◽  
White Light Interferometry

scholarly journals Characterization of surface acoustic waves by stroboscopic white-light interferometry

2015 ◽  
Vol 23 (8) ◽  
pp. 9690 ◽  
Author(s):  
Kimmo Kokkonen ◽  
Lauri Lipiäinen ◽  
Igor Shavrin ◽  
Steffen Novotny ◽  
Matti Kaivola ◽  
...  
Keyword(s):  
White Light ◽  
Acoustic Waves ◽  
Surface Acoustic Waves ◽  
White Light Interferometry

Characterization of micromechanical structures using white-light interferometry

2003 ◽  
Vol 14 (10) ◽  
pp. 1807-1814 ◽  
Author(s):  
Conor O Mahony ◽  
Martin Hill ◽  
Magali Brunet ◽  
Russell Duane ◽  
Alan Mathewson
Keyword(s):  
White Light ◽  
White Light Interferometry ◽  
Micromechanical Structures

White Light Interferometry for the Optical Characterization of Transparent ICF Shells

2006 ◽  
Vol 49 (4) ◽  
pp. 646-649 ◽  
Author(s):  
R. B. Stephens ◽  
D. A. Steinman ◽  
M. L. Hoppe
Keyword(s):  
White Light ◽  
Optical Characterization ◽  
White Light Interferometry
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