Exploiting the transient behavior of thermocapillary convection flows to enhance non-contact mesoscale manipulation

Quispe, Johan Edilberto; Muñoz, Elvin M.; Vela Saavedra, Emir Augusto · (2016) · DOI: 10.1063/1.4963159

Resumen

In this work it is demonstrated that the manipulation of the mesoscale-sized particles through Marangoni flows occurs during the transient regime of the convection cell evolution. By exploiting this fact, it was possible to selectively separate a single glass bead out of a group of other beads ranging from 150 to 212 um. This task was accomplished by controlling the Marangoni convection cell growth. The growth was controlled by varying the pulse width of an infrared laser beam that acts as a thermal source. Thus, extending the use of the Marangoni flows for single particles sorting or manipulation.

Instituciones: Universidad de Ingeniería y Tecnología