Flow profiling of a surface-acoustic-wave nanopump.
Phys Rev E Stat Nonlin Soft Matter Phys
; 70(5 Pt 2): 056311, 2004 Nov.
Article
en En
| MEDLINE
| ID: mdl-15600757
ABSTRACT
The flow profile in a capillary gap and the pumping efficiency of an acoustic micropump employing surface acoustic waves is investigated both experimentally and theoretically. Ultrasonic surface waves on a piezoelectric substrate strongly couple to a thin liquid layer and generate a quadrupolar streaming pattern within the fluid. We use fluorescence correlation spectroscopy and fluorescence microscopy as complementary tools to investigate the resulting flow profile. The velocity was found to depend on the applied power approximately linearly and to decrease with the inverse third power of the distance from the ultrasound generator on the chip. The found properties reveal acoustic streaming as a promising tool for the controlled agitation during microarray hybridization.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Reología
/
Acústica
/
Análisis de Falla de Equipo
/
Análisis de Secuencia por Matrices de Oligonucleótidos
/
Nanotecnología
/
Técnicas Analíticas Microfluídicas
Tipo de estudio:
Evaluation_studies
Idioma:
En
Revista:
Phys Rev E Stat Nonlin Soft Matter Phys
Asunto de la revista:
BIOFISICA
/
FISIOLOGIA
Año:
2004
Tipo del documento:
Article
País de afiliación:
Alemania