Towards an optofluidic pump?
Résumé
Most of the vibrating mechanisms of optofluidic
systems are based on local heating of membranes that in-
duces liquid flow. We report here a new type of diaphragm
pump in a liquid film based on the optical radiation pres-
sure force. We modulate a low power laser that gener-
ates, at resonance, a symmetric vibration of a free standing
soap film. The film lifetime strongly varies from 56 s at low
power (2 mW) to 2 s at higher power (70 mW). Since the
laser beam only acts mechanically on the interfaces, such
a pump could be easily implemented on delicate micro-
equipment on chips or in biological systems.
Domaines
Optique [physics.optics]
Origine : Fichiers produits par l'(les) auteur(s)
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