Journal
MICROFLUIDICS AND NANOFLUIDICS
Volume 7, Issue 6, Pages 841-848Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s10404-009-0442-5
Keywords
FeGa2O4; Microfluidics; Hollow nanosphere; Micro-reactor
Funding
- National Science Council in Taiwan [NSC96-2120-M-006-008]
- Ministry of Education, Taiwan, R.O.C.
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This paper describes a new approach to synthesize hollow nanospheres in a microfluidic system using air bubbles as templates. A new microfluidic system which integrates a micro-mixer, a micro-condenser channel, microvalves, a micro-heater, and a micro-temperature sensor, to form an automatic micro-reactor, is used to generate air bubbles that assist in the synthesis of hollow Fe/Ga-based oxide nanospheres. Experimental data show that Fe/Ga-based oxide nanoparticles with a diameter of 157 +/- A 26 nm can be successfully synthesized. The formation mechanism is that the seed nanoparticles are attaching themselves onto the bubbles to form a solid shell. The magnetic properties of the hollow Fe/Ga-based oxide nanospheres are also measured. This may be a promising platform to synthesize hollow nanoparticles for drug delivery applications.
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