Flow focusing method and system for forming concentrated volumes of microbeads, and microbeads formed further thereto
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United States of America Patent
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Oct 8, 2013
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N/A
app pub date -
Oct 10, 2008
filing date -
Oct 12, 2007
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Abstract
In a method and system for forming concentrated volumes of microbeads, a polymer solution and/or suspension includes a polymer dissolved and/or dispersed in a medium. Streams of a focusing fluid and of the polymer solution and/or suspension flow towards a fluid bath, and into intersection with one another, so &s to focus the polymer solution and/or suspension. The polymer solution and/or suspension stream forms microbeads in the fluid bath. Some of the focusing fluid is drawn from the fluid bath, so as to concentrate the microbeads in die fluid bath. The system includes a flow focusing apparatus and a liquid-containing cell. The focusing apparatus includes polymer and focusing nozzles. The cell contains the fluid bath and has an outlet port, through which the focusing fluid is drawn from the fluid bath.
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