Automatic contactless injection, transportation, merging, and ejection of droplets with a multifocal point acoustic levitator
Fecha
2018Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión publicada / Argitaratu den bertsioa
Impacto
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10.1063/1.5063715
Resumen
We present an acoustic levitation system that automatically injects, transports, merges and ejects liquid droplets in mid-air. The system consists of a phased array operating at 40 kHz on top of a plane reflector. The phase array generates multiple focal points at independent positions that form standing waves between the array and the reflector. In the reflector there is an inlet for a piezoelec ...
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We present an acoustic levitation system that automatically injects, transports, merges and ejects liquid droplets in mid-air. The system consists of a phased array operating at 40 kHz on top of a plane reflector. The phase array generates multiple focal points at independent positions that form standing waves between the array and the reflector. In the reflector there is an inlet for a piezoelectric droplet injector which automatically inserts liquid droplets at the lower pressure nodes of the standing waves, and a hole that serves as an outlet for ejecting the processed droplets out of the system. Simulations of the acoustic radiation potential acting on the levitating droplets are in good agreement with the experiments. High-speed footage captured the functioning of the system in four fluidic operations: injection, transport, merging and ejection of liquid droplets. Having these operations integrated reliably into a single automatic system paves the way for the adoption of mid-air acoustophoretic processing in biological, chemical and pharmaceutical applications. [--]
Materias
Automatic contactless injection,
Point acoustic levitator
Editor
AIP Publishing
Publicado en
Review of Scientific Instruments, 89 (12)
Notas
The following article appeared in Andrade, Marco A.B., Marzo, Asier, (2018). Automatic contactless injection, transportation, merging, and ejection of droplets with a multifocal point acoustic levitator. Review of Scientific Instruments December 2018 89 (12), doi: 10.1063/1.5063715 and may be found at http://dx.doi.org/doi: 10.1063/1.5063715.
Departamento
Universidad Pública de Navarra. Departamento de Estadística, Informática y Matemáticas /
Nafarroako Unibertsitate Publikoa. Estatistika, Informatika eta Matematika Saila
Versión del editor
Entidades Financiadoras
This research was supported by the São Paulo Research Foundation—FAPESP (Grants Nos. 2017/27078-0 and 2018/04101-0).