Probing roto-translational diffusion of small anisotropic colloidal particles with a bright-field microscope
(2021) In European Physical Journal E. Soft Matter 44(4).- Abstract
Abstract: Soft and biological materials are often composed of elementary constituents exhibiting an incessant roto-translational motion at the microscopic scale. Tracking this motion with a bright-field microscope becomes increasingly challenging when the particle size becomes smaller than the microscope resolution, a case which is frequently encountered. Here we demonstrate squared-gradient differential dynamic microscopy (SG-DDM) as a tool to successfully use bright-field microscopy to extract the roto-translational dynamics of small anisotropic colloidal particles, whose rotational motion cannot be tracked accurately in direct space. We provide analytical justification and experimental demonstration of the method by successful... (More)
Abstract: Soft and biological materials are often composed of elementary constituents exhibiting an incessant roto-translational motion at the microscopic scale. Tracking this motion with a bright-field microscope becomes increasingly challenging when the particle size becomes smaller than the microscope resolution, a case which is frequently encountered. Here we demonstrate squared-gradient differential dynamic microscopy (SG-DDM) as a tool to successfully use bright-field microscopy to extract the roto-translational dynamics of small anisotropic colloidal particles, whose rotational motion cannot be tracked accurately in direct space. We provide analytical justification and experimental demonstration of the method by successful application to an aqueous suspension of peanut-shaped particles. Graphic abstract: [Figure not available: see fulltext.]
(Less)
- author
- Giavazzi, Fabio ; Pal, Antara LU and Cerbino, Roberto
- organization
- publishing date
- 2021-04
- type
- Contribution to journal
- publication status
- published
- subject
- in
- European Physical Journal E. Soft Matter
- volume
- 44
- issue
- 4
- article number
- 61
- publisher
- Springer
- external identifiers
-
- pmid:33900479
- scopus:85104881997
- ISSN
- 1292-8941
- DOI
- 10.1140/epje/s10189-021-00063-4
- language
- English
- LU publication?
- yes
- id
- 16c0f667-0c1c-4c82-8478-f068d3d0cfbd
- date added to LUP
- 2021-05-10 11:57:55
- date last changed
- 2025-01-13 07:55:07
@article{16c0f667-0c1c-4c82-8478-f068d3d0cfbd,
abstract = {{<p>Abstract: Soft and biological materials are often composed of elementary constituents exhibiting an incessant roto-translational motion at the microscopic scale. Tracking this motion with a bright-field microscope becomes increasingly challenging when the particle size becomes smaller than the microscope resolution, a case which is frequently encountered. Here we demonstrate squared-gradient differential dynamic microscopy (SG-DDM) as a tool to successfully use bright-field microscopy to extract the roto-translational dynamics of small anisotropic colloidal particles, whose rotational motion cannot be tracked accurately in direct space. We provide analytical justification and experimental demonstration of the method by successful application to an aqueous suspension of peanut-shaped particles. Graphic abstract: [Figure not available: see fulltext.]</p>}},
author = {{Giavazzi, Fabio and Pal, Antara and Cerbino, Roberto}},
issn = {{1292-8941}},
language = {{eng}},
number = {{4}},
publisher = {{Springer}},
series = {{European Physical Journal E. Soft Matter}},
title = {{Probing roto-translational diffusion of small anisotropic colloidal particles with a bright-field microscope}},
url = {{http://dx.doi.org/10.1140/epje/s10189-021-00063-4}},
doi = {{10.1140/epje/s10189-021-00063-4}},
volume = {{44}},
year = {{2021}},
}