What can be learned from optical two-color diffusion and thermodiffusion experiments on ternary fluid mixtures?

The Journal of Chemical Physics
M Gebhardt, W Köhler

Abstract

A number of optical techniques have been developed during the recent years for the investigation of diffusion and thermodiffusion in ternary fluid mixtures, both on ground and on-board the International Space Station. All these methods are based on the simultaneous measurement of refractive index changes at two different wavelengths. Here, we discuss and compare different techniques with the emphasis on optical beam deflection (OBD), optical digital interferometry, and thermal diffusion forced Rayleigh scattering (TDFRS). We suggest to formally split the data evaluation into a phenomenological parameterization of the measured transients and a subsequent transformation from the refractive index into the concentration space. In all experiments, the transients measured at two different detection wavelengths can be described by four amplitudes and two eigenvalues of the diffusion coefficient matrix. It turns out that these six parameters are subjected to large errors and cannot be determined reliably. Five good quantities, which can be determined with a high accuracy, are the stationary amplitudes, the initial slopes as defined in TDFRS experiments and by application of a heuristic criterion for similar curves, a certain mean diffu...Continue Reading

References

Jul 13, 2005·The Journal of Chemical Physics·Alana Leahy-DiosAbbas Firoozabadi
Feb 14, 2006·The Journal of Chemical Physics·Kjetil B Haugen, Abbas Firoozabadi
Sep 1, 2006·The Journal of Physical Chemistry. B·Kjetil B Haugen, Abbas Firoozabadi
Jun 13, 2009·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·A Zebib, M M Bou-Ali
Mar 25, 2010·The Journal of Chemical Physics·Pablo BlancoCarlos Santamaría
May 3, 2013·The Journal of Chemical Physics·Aliaksandr Mialdun, Valentina Shevtsova
Jun 8, 2013·The Journal of Chemical Physics·Amirhossein AhadiM Ziad Saghir

❮ Previous
Next ❯

Citations

Dec 25, 2015·The Journal of Physical Chemistry. B·Vitaliy SechenyhValentina Shevtsova
Apr 10, 2016·The Journal of Chemical Physics·C GiraudetH Bataller
Jul 17, 2015·The Journal of Chemical Physics·Miren LarrañagaCarlos Santamaría
Jul 3, 2016·The Journal of Chemical Physics·Mohamed Aziz LarabiAbdelkader Mojtabi
Dec 25, 2016·The European Physical Journal. E, Soft Matter·Philipp BaaskeAlberto Vailati
Nov 10, 2015·The Journal of Chemical Physics·Pierre-Arnaud Artola, Bernard Rousseau
Mar 30, 2017·The European Physical Journal. E, Soft Matter·Henri BatallerFabrizio Croccolo
Oct 6, 2015·Physical Chemistry Chemical Physics : PCCP·J C LegrosV Shevtsova
Sep 8, 2021·Scientific Reports·Aliaksandr MialdunValentina Shevtsova

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.