Mid-Infrared Spectroscopic Sensors for In-Situ Monitoring of Methane Dissolved in Sea Water

2003 ◽  
Author(s):  
Frank Vogt ◽  
Neil Pennington ◽  
Boris Mizaikoff
Keyword(s):  
Sea Water ◽  
In Situ Monitoring ◽  
Mid Infrared ◽  
Infrared Spectroscopic ◽  
Spectroscopic Sensors

Real-time in situ monitoring of freely suspended and immobilized cell cultures based on mid-infrared spectroscopic measurements

2001 ◽  
Vol 77 (2) ◽  
pp. 174-185 ◽  
Author(s):  
Martin Rhiel ◽  
Paul Ducommun ◽  
Ivan Bolzonella ◽  
Ian Marison ◽  
Urs von Stockar
Keyword(s):  
Real Time ◽  
Cell Cultures ◽  
In Situ Monitoring ◽  
Immobilized Cell ◽  
Mid Infrared ◽  
Spectroscopic Measurements ◽  
Infrared Spectroscopic ◽  
Freely Suspended

In-situ monitoring of carbon dioxide emissions from a diesel engine using a mid-infrared optical fibre sensor

2011 ◽  
Author(s):  
Elfed Lewis ◽  
John Clifford ◽  
Colin Fitzpatrick ◽  
Gerard Dooly ◽  
Weizhong Zhao ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Diesel Engine ◽  
Optical Fibre ◽  
Carbon Dioxide Emissions ◽  
In Situ Monitoring ◽  
Mid Infrared ◽  
Optical Fibre Sensor ◽  
Fibre Sensor

Quantitative in Situ Monitoring of an Elevated Temperature Reaction Using a Water-Cooled Mid-Infrared Fiber-Optic Probe

1996 ◽  
Vol 68 (7) ◽  
pp. 1116-1123 ◽  
Author(s):  
Paul MacLaurin ◽  
Nicholas C. Crabb ◽  
Ian Wells ◽  
Paul J. Worsfold ◽  
David Coombs
Keyword(s):  
Elevated Temperature ◽  
Fiber Optic ◽  
In Situ Monitoring ◽  
Temperature Reaction ◽  
Fiber Optic Probe ◽  
Mid Infrared ◽  
Optic Probe

scholarly journals A multi-parameter miniature photometric analyser for fully automated environmental water monitoring

2019 ◽  
Vol 6 (1) ◽  
pp. 34-39
Author(s):  
Daniele Paesani
Keyword(s):  
Sea Water ◽  
Process Analysis ◽  
Wide Spectrum ◽  
Industrial Process ◽  
Environmental Water ◽  
In Situ Monitoring ◽  
On Line ◽  
Analyte Detection ◽  
Increasing Demand

Nowadays, the increasing demand for constant in-situ monitoring of clean water, wastewater and sea water requires the deployment of automated platforms capable of on-line autonomous sampling, extended unattended operation and of multi-analyte detection. The Micro Loop Injection Analyser (μLIA) system hereby presented relies on integrated additively manufactured opto-fluidic components which allow for increased performance solutions to be implemented cost-effectively and in miniaturised footprints, targeting a wide spectrum of applications which ranges from in-situ environmental monitoring and field water testing to industrial process analysis. Preliminary tests of the μLIA unit have shown good reproducibility and stability of the system and a good performance of its self-calibration routines.

scholarly journals In situ monitoring of additives during CO2 gas hydrate formation

2016 ◽  
Vol 8 (30) ◽  
pp. 5897-5905 ◽  
Author(s):  
M. Schwenk ◽  
A. Katzir ◽  
B. Mizaikoff
Keyword(s):  
Gas Hydrate ◽  
Hydrate Formation ◽  
Evanescent Field ◽  
In Situ Monitoring ◽  
Mid Infrared ◽  
Co2 Gas ◽  
Field Spectroscopy ◽  
Gas Hydrate Formation

The combination of pressure/temperature traces with in situ mid-infrared fiberoptic evanescent field spectroscopy as advanced sensing concept for CO2 gas hydrate analysis.

scholarly journals Towards Real-Time In-Situ Mid-Infrared Spectroscopic Ellipsometry in Polymer Processing

2021 ◽  
Author(s):  
Alexander Ebner ◽  
Robert Zimmerleiter ◽  
Kurt Hingerl ◽  
Markus Brandstetter
Keyword(s):  
Real Time ◽  
Spectroscopic Ellipsometry ◽  
Quantum Cascade Lasers ◽  
Polymer Processing ◽  
In Situ Monitoring ◽  
Acquisition Time ◽  
Angle Of Incidence ◽  
Mid Infrared ◽  
Ethylene Vinyl Alcohol

Recent developments in mid-infrared (MIR) spectroscopic ellipsometry enabled by quantum cascade lasers (QCLs) resulted in a drastic improvement in signal-to-noise ratio compared to conventional thermal emitter based instrumentation. Thus, it was possible to reduce the acquisition time for high-resolution broadband ellipsometric spectra from multiple hours to less than 1 second. This opens up new possibilities for real-time in-situ ellipsometry in polymer processing. To highlight these evolving capabilities we demonstrate the benefits of a QCL based MIR ellipsometer by investigating single and multilayered polymer films. The molecular structure and reorientation of a 2.5m thin biaxially oriented polyethylene terephtalate film is monitored during a stretching process lasting 24.5 s to illustrate the perspective of ellipsometric measurements in dynamic processes. In addition, a polyethylene/ethylene vinyl alcohol/polyethylene multilayer film is investigated at continuously varying angle of incidence ( 0∘ – 50∘) in 17.2 s, highlighting an unprecedented sample throughput for the technique of varying angle spectroscopic ellipsometry in the MIR spectral range. The obtained results underline the superior spectral and temporal resolution of QCL ellipsometry and qualify this technique as suitable method for advanced in-situ monitoring in polymer processing.

scholarly journals Towards Real-Time In-Situ Mid-Infrared Spectroscopic Ellipsometry in Polymer Processing

Polymers ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 7
Author(s):  
Alexander Ebner ◽  
Robert Zimmerleiter ◽  
Kurt Hingerl ◽  
Markus Brandstetter
Keyword(s):  
Real Time ◽  
Spectroscopic Ellipsometry ◽  
Quantum Cascade Lasers ◽  
Polymer Processing ◽  
In Situ Monitoring ◽  
Acquisition Time ◽  
Angle Of Incidence ◽  
Mid Infrared ◽  
Ethylene Vinyl Alcohol

Recent developments in mid-infrared (MIR) spectroscopic ellipsometry enabled by quantum cascade lasers (QCLs) have resulted in a drastic improvement in signal-to-noise ratio compared to conventional thermal emitter based instrumentation. Thus, it was possible to reduce the acquisition time for high-resolution broadband ellipsometric spectra from multiple hours to less than 1 s. This opens up new possibilities for real-time in-situ ellipsometry in polymer processing. To highlight these evolving capabilities, we demonstrate the benefits of a QCL based MIR ellipsometer by investigating single and multilayered polymer films. The molecular structure and reorientation of a 2.5 µm thin biaxially oriented polyethylene terephthalate film is monitored during a stretching process lasting 24.5 s to illustrate the perspective of ellipsometric measurements in dynamic processes. In addition, a polyethylene/ethylene vinyl alcohol/polyethylene multilayer film is investigated at a continuously varying angle of incidence (0∘– 50∘) in 17.2 s, highlighting an unprecedented sample throughput for the technique of varying angle spectroscopic ellipsometry in the MIR spectral range. The obtained results underline the superior spectral and temporal resolution of QCL ellipsometry and qualify this technique as a suitable method for advanced in-situ monitoring in polymer processing.

Sign in / Sign up

Export Citation Format

Share Document