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Scattering Morphology Resolved Total Internal Reflection Microscopy (SMR-TIRM) Of Colloidal Spheres

Yan, J. and Efremenko, Dmitry and Vasilyeva, Alina A. and Doicu, Adrian and Wriedt, Thomas and Wirth, Christopher L. (2021) Scattering Morphology Resolved Total Internal Reflection Microscopy (SMR-TIRM) Of Colloidal Spheres. Computational Mathematics and Modeling, 32 (1), pp. 86-93. Springer Nature. doi: 10.1007/s10598-021-09518-x. ISSN 1046-283X.

[img] PDF - Only accessible within DLR bis January 2023 - Preprint version (submitted draft)

Official URL: http://dx.doi.org/10.1007/s10598-021-09518-x


Nanometer to micrometer scale colloidal particles are regularly found in applications in which surface forces dominate behavior. Consequently, a wide range of surface force measurement tools have been developed to probe interactions as a function of physiochemical properties. One tool, Total Internal Reflection Microscopy (TIRM), is an exceptionally sensitive probe of both conservative and non-conservative surface forces. A recent variant of TIRM called Scattering Morphology Resolved (SMR) TIRM utilizes the morphology of scattered light in concert with the integrated intensity to measure the position and orientation of a colloidal particle. Although the target of SMR-TIRM is the field of non-spherical anisotropic particles, spherical particles have been found to scatter evanescent waves with surprising morphology. Herein, we present experiments and simulations of the scattering morphology of a spherical particle. The morphology was probed as a function of particle size, incident beam polarization, and particle separation distance. We found that spherical particles scattered light with a noncircular morphology. Moreover, we found the morphology depended upon both the scaled particle size with respect to the incident beam wavelength and the incident beam polarization. Although the scattering morphology from the sphere was surprisingly complex, we did not find that these effects would alter the interpretation of scattering as a function of particle separation distance.

Item URL in elib:https://elib.dlr.de/142898/
Document Type:Article
Title:Scattering Morphology Resolved Total Internal Reflection Microscopy (SMR-TIRM) Of Colloidal Spheres
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Yan, J.Cleveland State UniversityUNSPECIFIED
Efremenko, DmitryDmitry.Efremenko (at) dlr.dehttps://orcid.org/0000-0002-7449-5072
Vasilyeva, Alina A.Rosenheim HochschuleUNSPECIFIED
Doicu, Adrianadrian.doicu (at) dlr.deUNSPECIFIED
Wriedt, ThomasUniversity of BremenUNSPECIFIED
Wirth, Christopher L.Chemical and Biomolecular Engineering Department, Case Western Reserve University,https://orcid.org/0000-0003-3380-2029
Date:January 2021
Journal or Publication Title:Computational Mathematics and Modeling
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
DOI :10.1007/s10598-021-09518-x
Page Range:pp. 86-93
Publisher:Springer Nature
Keywords:TIRM, colloidal particles, scattering, T-matrix
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Spectroscopic methods of the atmosphere
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Atmospheric Processors
Deposited By: Efremenko, Dr Dmitry
Deposited On:05 Jul 2021 11:01
Last Modified:05 Jul 2021 11:01

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