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Contact trapping, alignment and 3D transfer of a single nanowire using acoustic streaming

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2 Author(s)
Ning Li ; State Key Lab. of Mech. & Control of Mech. Struct., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing, China ; Jun-hui Hu

The acoustic streaming, which usually flushes trapped entities away, has been viewed as a negative factor in acoustic trapping. Here we report a method that uses mobile acoustic streaming to effectively trap a single nanowire within water film on substrate surface. The streaming is generated by a micro-probe with uniform diameter and in vibration. The trapped nanowire, which is pushed onto the micro-probe surface by the streaming, is constantly perpendicular to the micro-probe vibration and symmetric about the micro-probe approximately. It can be stably transferred through any 3D path in the water film by moving the micro-probe.

Published in:

Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA), 2012 Symposium on

Date of Conference:

23-25 Nov. 2012