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Transport powder and liquid samples by surface acoustic waves

Show simple item record Bao, Xiaoqi Bar-Cohen, Yoseph Sherrit, Stewart Badescu, Mircea Louyeh, Sahar 2014-08-26T23:20:28Z 2014-08-26T23:20:28Z 2009-03-08
dc.identifier.citation 2009 SPIE Conference on Smart Structures and Materials, San Diego, California, March 8-12, 2009 en_US
dc.identifier.clearanceno 09-1466
dc.description.abstract Sample transport is an important requirement for In-situ analysis of samples in NASA planetary exploration missions. Tests have shown that powders or liquid drops on a surface can be transported by surface acoustic waves (SAW) that are generated on the surface using interdigital transducers. The phenomena were investigated experimentally and to generate SAWs interdigital electrodes were deposited on wafers of 128° rotated Y-cut LiNbO₃. Transporting capability of the SAW device was tested using particles of various sizes and drops of various viscosities liquids. Because of different interaction mechanisms with the SAWs, the powders and the liquid drops were observed to move in opposite directions. In the preliminary tests, a speed of 180 mm/s was achieved for powder transportation. The detailed experimental setup and results are presented in this paper. The transporting mechanism can potentially be applied to miniaturize sample analysis system or " lab-on-chip" devices. en_US
dc.description.sponsorship NASA/JPL en_US
dc.language.iso en_US en_US
dc.publisher Pasadena, CA : Jet Propulsion Laboratory, National Aeronautics and Space Administration, 2009 en_US
dc.subject SAW device en_US
dc.subject lab-on-chip en_US
dc.subject Sample handling en_US
dc.subject MEMS en_US
dc.title Transport powder and liquid samples by surface acoustic waves en_US
dc.type Presentation en_US

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