Extending depolarized DLS measurements to turbid samples
Pal, Antara LU ; Holmqvist, Peter LU ; Vaccaro, Andrea and Schurtenberger, Peter LU
(2022)
In Journal of Colloid and Interface Science
627.
p.1-9
- Abstract
The application of dynamic light scattering to soft matter systems has strongly profited from advanced approaches such as the so-called modulated 3D cross correlation technique (Mod3D-DLS) that suppress contributions from multiple scattering, and can therefore be used for the characterization of turbid samples. Here we now extend the possibilities of this technique to allow for depolarized light scattering (Mod3D-DDLS) and thus obtain information on both translational and rotational diffusion, which is important for the characterization of anisotropic particles. We describe the required optical design and test the performance of the approach for increasingly turbid samples using well defined anisotropic colloidal models systems. Our... (More)
The application of dynamic light scattering to soft matter systems has strongly profited from advanced approaches such as the so-called modulated 3D cross correlation technique (Mod3D-DLS) that suppress contributions from multiple scattering, and can therefore be used for the characterization of turbid samples. Here we now extend the possibilities of this technique to allow for depolarized light scattering (Mod3D-DDLS) and thus obtain information on both translational and rotational diffusion, which is important for the characterization of anisotropic particles. We describe the required optical design and test the performance of the approach for increasingly turbid samples using well defined anisotropic colloidal models systems. Our measurements demonstrate that 3D-DDLS experiments can be performed successfully for samples with a reduced transmission due to multiple scattering as low as 1%. We compare the results from this approach with those obtained by standard DDLS experiments, and point out the importance of using an appropriate optical design when performing depolarized dynamic light scattering experiments with turbid systems.
(Less)
- author
- Pal, Antara
LU
; Holmqvist, Peter
LU
; Vaccaro, Andrea
and Schurtenberger, Peter
LU
- organization
- publishing date
- 2022-12
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Concentrated colloid suspensions, Depolarized dynamic light scattering, Translational and rotational diffusion, Turbid suspensions
- in
- Journal of Colloid and Interface Science
- volume
- 627
- pages
- 9 pages
- publisher
- Elsevier
- external identifiers
-
- scopus:85134324196
- pmid:35839555
- ISSN
- 0021-9797
- DOI
- 10.1016/j.jcis.2022.06.113
- language
- English
- LU publication?
- yes
- id
- 565f7522-10be-497d-a471-b9afc4a7ce57
- date added to LUP
- 2022-09-05 13:55:12
- date last changed
- 2024-06-13 18:50:05
@article{565f7522-10be-497d-a471-b9afc4a7ce57,
abstract = {{<p>The application of dynamic light scattering to soft matter systems has strongly profited from advanced approaches such as the so-called modulated 3D cross correlation technique (Mod3D-DLS) that suppress contributions from multiple scattering, and can therefore be used for the characterization of turbid samples. Here we now extend the possibilities of this technique to allow for depolarized light scattering (Mod3D-DDLS) and thus obtain information on both translational and rotational diffusion, which is important for the characterization of anisotropic particles. We describe the required optical design and test the performance of the approach for increasingly turbid samples using well defined anisotropic colloidal models systems. Our measurements demonstrate that 3D-DDLS experiments can be performed successfully for samples with a reduced transmission due to multiple scattering as low as 1%. We compare the results from this approach with those obtained by standard DDLS experiments, and point out the importance of using an appropriate optical design when performing depolarized dynamic light scattering experiments with turbid systems.</p>}},
author = {{Pal, Antara and Holmqvist, Peter and Vaccaro, Andrea and Schurtenberger, Peter}},
issn = {{0021-9797}},
keywords = {{Concentrated colloid suspensions; Depolarized dynamic light scattering; Translational and rotational diffusion; Turbid suspensions}},
language = {{eng}},
pages = {{1--9}},
publisher = {{Elsevier}},
series = {{Journal of Colloid and Interface Science}},
title = {{Extending depolarized DLS measurements to turbid samples}},
url = {{http://dx.doi.org/10.1016/j.jcis.2022.06.113}},
doi = {{10.1016/j.jcis.2022.06.113}},
volume = {{627}},
year = {{2022}},
}