<div class="csl-bib-body">
<div class="csl-entry">Dabrowska, A., Schwaighofer, A., & Lendl, B. (2024, March 11). <i>Mid-IR Dispersion Spectroscopy – A New Avenue for Liquid Analysis</i> [Poster Presentation]. AK-PAT 17. Interdisziplinäres Doktorandenseminar, Freiburg im Breisgau, Germany. http://hdl.handle.net/20.500.12708/204309</div>
</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/204309
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dc.description.abstract
Mid-infrared (mid-IR) dispersion spectroscopy is an attractive, novel approach to liquid phase analysis that overcomes the limitations encountered in conventional mid-IR absorption spectroscopy. The technique detects phase shifts inherent with IR absorption, rather than measuring changes in intensity. It delivers quantitative and qualitative information about the sample equivalent to absorption spectroscopy while offering numerous advantages: immunity to source intensity fluctuations, constant sensitivity, baseline-free detection, extension of optimum pathlengths, and high dynamic range beyond the capabilities of the Beer-Lambert’s law. [1]
In this work, we discuss the theoretical principles of the technique and experimentally demonstrate the advantages of dispersion spectroscopy over conventional absorption spectroscopy. Moreover, we present the latest configuration of the developed spectroscopic instrument for dispersion sensing in liquids. In brief, it consists of a Mach-Zehnder interferometer illuminated by a tunable quantum cascade laser. The sample is introduced to an instrument via a dual-channel transmission flow cell, placed between the interferometric arms, which is filled with a reference solution (solvent) and a sample solution (solvent + analyte) for the measurement. IR absorption in the sample solution introduces phase shifts between the interferometric arms proportional to the sample’s refractive index allowing the dispersion spectrum to be recorded and analyzed. Our example applications demonstrate the power of our technique and the developed setup for analysis of various analytes (i.e., proteins, carbohydrates), complex mixtures, and chemical reaction monitoring. [2-3]
In summary, the presented work illuminates the potential of dispersion spectroscopy as an upcoming robust and sensitive way of recording IR spectra of liquid samples that can be harnessed to construct miniaturized, more reliable, and accessible sensors.
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dc.description.sponsorship
European Commission
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dc.language.iso
en
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dc.subject
Mid-IR spectroscopy
en
dc.subject
Quantum Cascade Laser
en
dc.subject
Dispersion spectroscopy
en
dc.subject
Refractive index sensing
en
dc.subject
liquid-phase analysis
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dc.title
Mid-IR Dispersion Spectroscopy – A New Avenue for Liquid Analysis
en
dc.type
Presentation
en
dc.type
Vortrag
de
dc.relation.grantno
101093008
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dc.type.category
Poster Presentation
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tuw.project.title
Integrated, Modular, Multisensing, Mid- and Near- IR sensing platform
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tuw.researchTopic.id
M2
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tuw.researchTopic.id
Q1
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tuw.researchTopic.name
Materials Characterization
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tuw.researchTopic.name
Photonics
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tuw.researchTopic.value
50
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tuw.researchTopic.value
50
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tuw.publication.orgunit
E164-02-1 - Forschungsgruppe Prozessanalytik
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tuw.author.orcid
0000-0002-3074-5674
-
tuw.author.orcid
0000-0003-2714-7056
-
tuw.author.orcid
0000-0003-3838-5842
-
tuw.event.name
AK-PAT 17. Interdisziplinäres Doktorandenseminar
de
tuw.event.startdate
11-03-2024
-
tuw.event.enddate
13-11-2024
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tuw.event.online
On Site
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tuw.event.type
Event for scientific audience
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tuw.event.place
Freiburg im Breisgau
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tuw.event.country
DE
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tuw.event.institution
Fraunhofer-Institut für Physikalische Messtechnik
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tuw.event.presenter
Dabrowska, Alicja
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tuw.event.track
Single Track
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wb.sciencebranch
Chemie
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wb.sciencebranch
Physik, Astronomie
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wb.sciencebranch.oefos
1040
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wb.sciencebranch.oefos
1030
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wb.sciencebranch.value
60
-
wb.sciencebranch.value
40
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item.fulltext
no Fulltext
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item.languageiso639-1
en
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item.cerifentitytype
Publications
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item.grantfulltext
none
-
item.openairecristype
http://purl.org/coar/resource_type/c_18co
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item.openairetype
conference poster not in proceedings
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crisitem.project.funder
European Commission
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crisitem.project.grantno
101093008
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crisitem.author.dept
E164-02-1 - Forschungsgruppe Prozessanalytik
-
crisitem.author.dept
E164-02-1 - Forschungsgruppe Prozessanalytik
-
crisitem.author.dept
E164-02 - Forschungsbereich Umwelt-, Prozessanalytik und Sensoren
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crisitem.author.orcid
0000-0002-3074-5674
-
crisitem.author.orcid
0000-0003-2714-7056
-
crisitem.author.orcid
0000-0003-3838-5842
-
crisitem.author.parentorg
E164-02 - Forschungsbereich Umwelt-, Prozessanalytik und Sensoren
-
crisitem.author.parentorg
E164-02 - Forschungsbereich Umwelt-, Prozessanalytik und Sensoren
-
crisitem.author.parentorg
E164 - Institut für Chemische Technologien und Analytik
