CUED Publications database

Microfluidics based on ZnO/nanocrystalline diamond surface acoustic wave devices.

Fu, YQ and Garcia-Gancedo, L and Pang, HF and Porro, S and Gu, YW and Luo, JK and Zu, XT and Placido, F and Wilson, JI and Flewitt, AJ and Milne, WI (2012) Microfluidics based on ZnO/nanocrystalline diamond surface acoustic wave devices. Biomicrofluidics, 6. pp. 24105-2410511.

Full text not available from this repository.

Abstract

Surface acoustic wave (SAW) devices with 64 μm wavelength were fabricated on a zinc oxide (ZnO) film deposited on top of an ultra-smooth nanocrystalline diamond (UNCD) layer. The smooth surface of the UNCD film allowed the growth of the ZnO film with excellent c-axis orientation and low surface roughness, suitable for SAW fabrication, and could restrain the wave from significantly dissipating into the substrate. The frequency response of the fabricated devices was characterized and a Rayleigh mode was observed at ∼65.4 MHz. This mode was utilised to demonstrate that the ZnO/UNCD SAW device can be successfully used for microfluidic applications. Streaming, pumping, and jetting using microdroplets of 0.5 and 20 μl were achieved and characterized under different powers applied to the SAW device, focusing more on the jetting behaviors induced by the ZnO SAW.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:29
Last Modified: 08 Dec 2014 02:34
DOI: 10.1063/1.3699974