Journal
LAB ON A CHIP
Volume 12, Issue 7, Pages 1268-1273Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2lc20705b
Keywords
-
Categories
Funding
- BBSRC
- EPSRC [EP/F 040857/01, EP/I017887/1]
- EPSRC [EP/F040857/1] Funding Source: UKRI
- Biotechnology and Biological Sciences Research Council [BB/C511572/1] Funding Source: researchfish
- Engineering and Physical Sciences Research Council [EP/I017887/1, EP/F040857/1] Funding Source: researchfish
Ask authors/readers for more resources
We demonstrate the use of a phononic crystal to enable the nebulisation of liquid droplets from low-cost disposable arrays, using surface acoustic waves (SAW). The SAWs were generated using interdigitated transducers (IDT) on a piezoelectric surface (LiNbO3) and the acoustic waves were coupled into a disposable phononic crystal structure, referred to as a superstrate. Using its excellent reflecting properties, the phononic structures confined the acoustic field within the superstrate, resulting in the concentration of the acoustic energy, in a manner controllable by the excitation frequency. We show that this capability mitigates against coupling losses incurred by the use of a disposable superstrate, greatly reducing the time needed to nebulise a drop of water with respect to an unstructured superstrate for a given power. We also demonstrate that by changing the excitation frequency, it is possible to change the spatial position at which the acoustic energy is concentrated, providing a means to specifically nebulise drops across an array. These results open up a promising future for the use of phonofluidics in high-throughput sample handling applications, such as drug delivery or the soft'' transfer of samples to a mass spectrometer in the field of proteomics.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available