Tuesday, April 5, 2011

Force of acoustical waves tapped for metamaterials

Force of acoustical waves tapped for metamaterials: Their technique harnesses an acoustical wave force, which causes nano-sized particles to cluster in periodic patterns in a host fluid that is later solidified, explains Farid Mitri, a Director's Fellow, and member of the Sensors & Electrochemical Devices, Acoustics & Sensors Technology Team, at LANL.
"The periodicity of the pattern formed is tunable and almost any kind of particle material can be used, including: metal, insulator, semiconductor, piezoelectric, hollow or gas-filled sphere, nanotubes and nanowires," he elaborates.
The entire process of structure formation is very fast and takes anywhere from 10 seconds to 5 minutes.

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