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Anchored H(g) Josephson Microsocket Board

IP.com Disclosure Number: IPCOM000050931D
Original Publication Date: 1982-Dec-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 2 page(s) / 30K

Publishing Venue

IBM

Related People

Palmer, MJ: AUTHOR

Abstract

In Josephson device circuits, pools of mercury are placed in cavities in silicon boards. Pins from various circuit chips, etc., are inserted into these cavities and into the liquid mercury therein in order to provide electrical contact to the devices on the circuit chips.

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Anchored H(g) Josephson Microsocket Board

In Josephson device circuits, pools of mercury are placed in cavities in silicon boards. Pins from various circuit chips, etc., are inserted into these cavities and into the liquid mercury therein in order to provide electrical contact to the devices on the circuit chips.

In order to anchor the mercury in the cavities, interface metallurgy is coated on the sides of the cavities in silicon boards.

The figure shows two silicon board halves 10 and 12 joined at an interface
14. Cavity 16 is formed in board half 10, while cavity 18 is formed in board half
12. The heavy line 20 along the interior of the cavity represents the interface layers, which are in contact with the liquid mercury 22.

Interface metallurgy 20 facilitates the localized placement of mercury in the board cavities and provides a consistent meniscus to encapsulate pins inserted into the cavities, the consistent meniscus being present during temperature cycling from room temperature to cryogenic temperatures.

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