scholarly journals Mid-infrared Plasmonics for Ultra-sensitive Chemical Fingerprinting and Real-time, in-situ Spectroscopy

2013 ◽  
Author(s):  
Ronen Adato ◽  
Hatice Altug
Keyword(s):  
Real Time ◽  
In Situ Spectroscopy ◽  
Mid Infrared ◽  
Chemical Fingerprinting

scholarly journals Real-Time Control of a Catalytic Solid in a Fixed-Bed Reactor Based on In Situ Spectroscopy

2007 ◽  
Vol 46 (28) ◽  
pp. 5412-5416 ◽  
Author(s):  
Simona M. Bennici ◽  
Bas M. Vogelaar ◽  
T. Alexander Nijhuis ◽  
Bert M. Weckhuysen
Keyword(s):  
Real Time ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
In Situ Spectroscopy ◽  
Real Time Control ◽  
Time Control

scholarly journals Real-Time Control of a Catalytic Solid in a Fixed-Bed Reactor Based on In Situ Spectroscopy

2007 ◽  
Vol 119 (28) ◽  
pp. 5508-5512 ◽  
Author(s):  
Simona M. Bennici ◽  
Bas M. Vogelaar ◽  
T. Alexander Nijhuis ◽  
Bert M. Weckhuysen
Keyword(s):  
Real Time ◽  
Fixed Bed ◽  
Fixed Bed Reactor ◽  
In Situ Spectroscopy ◽  
Real Time Control ◽  
Time Control

A method for real time detection of reaction endpoints using a moving window t-test of in situ time course data

2020 ◽  
Vol 5 (9) ◽  
pp. 1642-1646
Author(s):  
Elyse N. T. DiMaso ◽  
Robert W. Bondi ◽  
John Guo ◽  
Alexander G. O'Brien
Keyword(s):  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Real Time ◽  
Time Course ◽  
Test Method ◽  
Moving Window ◽  
Mid Infrared ◽  
Mid Infrared Spectroscopy ◽  
Time Course Data

In-line Fourier transform mid-infrared spectroscopy (FTIR) in combination with a moving window t-test method was used to determine the endpoint of a reaction with a highly inconsistent rate.

scholarly journals Real Time Indirect Nanoplasmonic in Situ Spectroscopy of Catalyst Nanoparticle Sintering

ACS Catalysis ◽  
2012 ◽  
Vol 2 (2) ◽  
pp. 238-245 ◽  
Author(s):  
Elin M. Larsson ◽  
Julien Millet ◽  
Stefan Gustafsson ◽  
Magnus Skoglundh ◽  
Vladimir P. Zhdanov ◽  
...  
Keyword(s):  
Real Time ◽  
In Situ Spectroscopy ◽  
Catalyst Nanoparticle

scholarly journals Real Time Indirect Nanoplasmonic in Situ Spectroscopy of Catalyst Nanoparticle Sintering

ACS Catalysis ◽  
2013 ◽  
Vol 4 (1) ◽  
pp. 171-171 ◽  
Author(s):  
Elin M. Larsson ◽  
Julien Millet ◽  
Stefan Gustafsson ◽  
Magnus Skoglundh ◽  
Vladimir P. Zhdanov ◽  
...  
Keyword(s):  
Real Time ◽  
In Situ Spectroscopy ◽  
Catalyst Nanoparticle

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.

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

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.

Methodology for real-time, multianalyte monitoring of fermentations using an in-situ mid-infrared sensor

2003 ◽  
Vol 82 (6) ◽  
pp. 702-709 ◽  
Author(s):  
Henri Kornmann ◽  
Martin Rhiel ◽  
Christopher Cannizzaro ◽  
Ian Marison ◽  
Urs von Stockar
Keyword(s):  
Real Time ◽  
Infrared Sensor ◽  
Mid Infrared
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