Alignment of an acoustic manipulation device with cepstral analysis of electronic impedance data.
Ultrasonics
; 56: 172-7, 2015 Feb.
Article
en En
| MEDLINE
| ID: mdl-25448425
ABSTRACT
Acoustic particle manipulation is an emerging technology that uses ultrasonic standing waves to position objects with pressure gradients and acoustic radiation forces. To produce strong standing waves, the transducer and the reflector must be aligned properly such that they are parallel to each other. This can be a difficult process due to the need to visualise the ultrasound waves and as higher frequencies are introduced, this alignment requires higher accuracy. In this paper, we present a method for aligning acoustic resonators with cepstral analysis. This is a simple signal processing technique that requires only the electrical impedance measurement data of the resonator, which is usually recorded during the fabrication process of the device. We first introduce the mathematical basis of cepstral analysis and then demonstrate and validate it using a computer simulation of an acoustic resonator. Finally, the technique is demonstrated experimentally to create many parallel linear traps for 10 µm fluorescent beads inside an acoustic resonator.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Ultrasonido
/
Acústica
/
Impedancia Eléctrica
Idioma:
En
Revista:
Ultrasonics
Año:
2015
Tipo del documento:
Article
País de afiliación:
Reino Unido
Pais de publicación:
HOLANDA
/
HOLLAND
/
NETHERLANDS
/
NL
/
PAISES BAJOS
/
THE NETHERLANDS