Technical Note: Noninvasive mid‐IR fiber‐optic evanescent wave spectroscopy (FEWS) for early detection of skin cancers

2020 ◽  
Vol 47 (11) ◽  
pp. 5523-5530
Author(s):  
Svetlana Basov ◽  
Yair Dankner ◽  
Marcelo Weinstein ◽  
Abraham Katzir ◽  
Max Platkov
Keyword(s):  
Early Detection ◽  
Evanescent Wave ◽  
Fiber Optic ◽  
Technical Note ◽  
Skin Cancers

scholarly journals Evanescent Wave Absorption Based S-shaped Fiber-optic Biosensor for Immunosensing Applications

2016 ◽  
Vol 168 ◽  
pp. 117-120 ◽  
Author(s):  
S. Chauhan ◽  
N. Punjabi ◽  
D. Sharma ◽  
S. Mukherji
Keyword(s):  
Evanescent Wave ◽  
Fiber Optic ◽  
Wave Absorption

scholarly journals Technical Note: Determining regions of interest for CCD camera-based fiber optic luminescence dosimetry by examining signal-to-noise ratio

2011 ◽  
Vol 38 (3) ◽  
pp. 1374-1377 ◽  
Author(s):  
David M. Klein ◽  
Francois Therriault-Proulx ◽  
Louis Archambault ◽  
Tina M. Briere ◽  
Luc Beaulieu ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Signal To Noise Ratio ◽  
Ccd Camera ◽  
Technical Note ◽  
Regions Of Interest ◽  
Signal To Noise ◽  
Luminescence Dosimetry ◽  
Noise Ratio

Detection of endotoxin using an evanescent wave fiber-optic biosensor

1996 ◽  
Vol 60 (3) ◽  
pp. 189-202 ◽  
Author(s):  
E. A. James ◽  
K. Schmeltzer ◽  
F. S. Ligler
Keyword(s):  
Evanescent Wave ◽  
Fiber Optic

Investigation of fiber-optic evanescent-wave sensors for detection of liquid hydrocarbons

1998 ◽  
Vol 51 (1-3) ◽  
pp. 152-158 ◽  
Author(s):  
Petr Tobiška ◽  
Miroslav Chomát ◽  
Vlastimil Matějec ◽  
Daniela Berková ◽  
Ivan Hüttel
Keyword(s):  
Evanescent Wave ◽  
Fiber Optic ◽  
Liquid Hydrocarbons ◽  
Wave Sensors

Sand Dune Migration Monitoring for Pipeline Hazard Risk Mitigation: The Peru LNG Coastal Section Case

2020 ◽  
Author(s):  
Fabien Ravet ◽  
Christian Silva ◽  
Rodolfo Gil ◽  
Simon Maguire ◽  
Etienne Rochat
Keyword(s):  
Early Detection ◽  
Natural Hazards ◽  
Sand Dune ◽  
Fiber Optic ◽  
Risk Mitigation ◽  
Third Party ◽  
Transport Systems ◽  
Geotechnical Monitoring ◽  
Dune Migration ◽  
Hydrocarbon Transport

Abstract Pipelines often cross challenging terrains where natural hazards are the main risk for their integrity. Environmental conditions can also worsen over the infrastructure lifetime. To reduce the risk of disasters, integrity programs are developed implementing tools for early detection of threats that can lead to a failure with dramatic social, environmental and economic consequences. Fiber optic (FO) monitoring solutions have been widely used and implemented as one of the most efficient prevention tools of these programs. These solutions include geotechnical monitoring, third party intrusion detection and eventually small or pinhole like leak detection. FO based geotechnical monitoring has been successfully operated along the Sierra section of the Peru LNG pipeline since 2010, detecting minor landslides and erosion events. It has also been implemented along other hydrocarbon transport systems to allow the early detection of such events. However, these natural hazards are not the only ones threatening the pipeline. In fact, the coastal section experiences other phenomenon such as sand dune migration and eolian erosion that put the pipeline at risk. Recently, the FO monitoring was extended to the coastal region using the existing communication fiber optic cable to sense temperature changes. Very localized events are thermally detected, their spatial and temporal signature analyzed. The comparison of this data with thermal models identified sections that are close to be exposed or whose soil cover is less than 50cm over a spatial extension that does not exceed a couple of meters. Depth of cover of 10 to 30cm is estimated from such analysis. These results are confirmed by past and ongoing site inspections. Such positive results again illustrate the potential value of fiber optic sensing to mitigate geohazard risks. It not only enhances the efficiency of the integrity program detecting and localizing threats, it also improves and rationalizes the maintenance activities as focused surveys can be conducted.

Bioanalytical Applications of an Automated Evanescent Wave Fiber Optic Immunosensor System

1994 ◽  
pp. 84
Author(s):  
Peter Oroszlan ◽  
Verena Steiner ◽  
Michael Weller ◽  
Gert Duveneck ◽  
Markus Ehrat
Keyword(s):  
Evanescent Wave ◽  
Fiber Optic ◽  
Bioanalytical Applications
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