abstract

• In this work, we report measurements of the mean squared angular and translational displacements of a colloidal dumbbell immersed in a viscoelastic fluid using digital microscopy. From the mean squared displacements, we obtain the mechanical properties of the media. Both angular and translational motions provide the same viscoelastic complex modulus and agree with that obtained from the translational motion of a spherical probe particle. © 2022 IOP Publishing Ltd.

authors

• Arauz Lara Bernardo José Luis
• Haro-Pérez C.
• Ramírez-Saito A.

publication date

• 2022-01-01

funding provided via

• Consejo Nacional de Ciencia y Tecnología, CONACYT: A1-S-16002, CF-MG-731759  Grant

published in

• Journal of Physics Condensed Matter  Journal

keywords

• dumbbells; polymer solutions; rotational microrheology; videomicroscopy Elastic moduli; Sols; Angular displacement; Anisotropic particles; Dumbbell; Measurements of; Microrheology; Rotational microrheology; Translational displacements; Translational motions; Videomicroscopy; Visco-elastic fluid; Viscoelasticity

Digital Object Identifier (DOI)

• 10.1088/1361-648X/ac768b

PubMed ID

• 35671751

start page

end page

volume

• 34

issue

• 33