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Ferroelectric opening switch

United States Patent

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10,431,280
October 1, 2019
View the Complete Patent at the US Patent & Trademark Office
A ferroelectric opening switch is enabled by controlled polarization switching via nucleation in a ferroelectric material, such as BaTiO.sub.3, Pb(Zr,Ti)O.sub.3, LiNbO.sub.3, LiTaO.sub.3, or variants thereof. For example, nucleation sites can be provided by mechanical seeding, grain boundaries, or optical illumination. The invention can be used as an opening switch in large scale pulsed-power systems. However, the switch can also be used in compact pulsed-power systems (e.g., as drivers for high power microwave systems), as passive fault limiters for high voltage dc (HVDC) systems, and/or in other high power applications.
15/ 137,539
April 25, 2016
1/1
G11C 11/22 (20060101)
;365/49.13,65,109,117,145,148
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.