Trapping and manipulation of bubbles with holographic optical tweezers.
Soft Matter
; 20(9): 2032-2039, 2024 Feb 28.
Article
em En
| MEDLINE
| ID: mdl-38334987
ABSTRACT
A methodology to manipulate bubbles and measure adhesion forces is presented and validated. Holographic optical tweezers are employed to establish a circular array of high intensity points to effectively trap a gas bubble within a liquid medium. This approach includes an efficient calibration protocol based on a theoretical framework for the calculation of optical forces using a ray tracing algorithm, which allows enhancing the versatility of optical manipulation to micro-objects with a lower refractive index than the surrounding medium. As an initial application, the adhesion force between two stable bubbles at different sizes is measured, finding a minimum when they have the same diameter.
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MEDLINE
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article