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Apparatus for pneumatic shuttering of an aerosol particle stream

United States Patent

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August 28, 2018
View the Complete Patent at the US Patent & Trademark Office
The invention provides pneumatic shuttering of a focused or collimated aerosol particle stream. The aerosol stream can be collimated by an annular sheath of inert or non-inert gas. The apparatus propagates a sheathed aerosol stream through a series of aerodynamic lenses along the axis of a flow cell. The final lens is typically positioned above a substrate, so that direct material deposition is provided. A substantially perpendicularly-flowing gas external to the aerodynamic lens system is used to redirect the particle stream away from the flow axis and through an exhaust port, thereby shuttering the collimated aerosol stream. The pneumatic shutter enables printing of discreet structures, with on/off shuttering times of approximately 1 to 100 milliseconds.
15/ 443,867
February 27, 2017
B05B 7/12 (20060101)B41J 2/02 (20060101)B05B 7/14 (20060101)B05B 12/18 (20180101)B41J 2/03 (20060101)
STATEMENT OF GOVERNMENT INTEREST This invention was made with Government support under contract no. DE-AC04-94AL85000 awarded by the U. S. Department of Energy to Sandia Corporation. The Government has certain rights in the invention.