Dynamic stereo microscopy for studying particle sedimentation.
Opt Express
; 22(4): 4671-7, 2014 Feb 24.
Article
en En
| MEDLINE
| ID: mdl-24663785
ABSTRACT
We demonstrate a new method for measuring the sedimentation of a single colloidal bead by using a combination of optical tweezers and a stereo microscope based on a spatial light modulator. We use optical tweezers to raise a micron-sized silica bead to a fixed height and then release it to observe its 3D motion while it sediments under gravity. This experimental procedure provides two independent measurements of bead diameter and a measure of Faxén's correction, where the motion changes due to presence of the boundary.
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1
Colección:
01-internacional
Banco de datos:
MEDLINE
Idioma:
En
Revista:
Opt Express
Asunto de la revista:
OFTALMOLOGIA
Año:
2014
Tipo del documento:
Article