Ferroelectric or pyroelectric sensor utilizing a sodium nitrite layer
First Claim
Patent Images
1. Improved ferroelectric or pyroelectric sensing element comprisinga substrate;
- a crystalline sodium nitrite layer deposited on said substrate; and
at least one electrode in contact with said crystalline sodium nitrite layer.
0 Assignments
0 Petitions
Accused Products
Abstract
A pyroelectric or ferroelectric sensing element consists of a substrate with a thin layer of sodium nitrite. Electrodes may be applied to both sides of the sodium nitrite layer, or, alternatively, only one electrode may be used. In one embodiment, an array of electrodes is applied to one side of a continuous sodium nitrite layer, while the other side has a continuous electrode. In another embodiment, the sodium nitrite layer consists of separate portions, each interposed between one electrode of an electrode array and either the substrate or a second, continuous electrode.
29 Citations
19 Claims
-
1. Improved ferroelectric or pyroelectric sensing element comprising
a substrate; -
a crystalline sodium nitrite layer deposited on said substrate; and at least one electrode in contact with said crystalline sodium nitrite layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 19)
-
-
15. Apparatus for creating a signal at an output electrode in response to a change in energy received by said apparatus, comprising, in combination a substrate;
- a thin crystalline layer of sodium nitrite deposited on said substrate, said substrate with said layer of sodium nitrite constituting a sensing element subject to polarization changes in response to predetermined changes of energy applied thereto; and
means for creating said signal at said output electrode in response to said polarization changes in said sensing elements. - View Dependent Claims (16)
- a thin crystalline layer of sodium nitrite deposited on said substrate, said substrate with said layer of sodium nitrite constituting a sensing element subject to polarization changes in response to predetermined changes of energy applied thereto; and
-
17. Radiation detector, comprising, in combination, a substrate;
- a crystalline sodium nitrite layer, having a first and second electrode respectively positioned on top and bottom surface thereof, deposited on said substrate;
an air tight housing having a window transparent to a predetermined part of the electromagnetic radiation spectrum;
mounting means for mounting said substrate with said sodium nitrite layer deposited thereon behind said window within said housing; and
a third and fourth electrode in electrical contact, respectively, with said first and second electrode, and extending through said housing, whereby radiation within said predetermined part of said spectrum received through said window heats said sodium nitrite layer thereby changing its spontaneous polarization and creating a charge at said third and fourth electrode. - View Dependent Claims (18)
- a crystalline sodium nitrite layer, having a first and second electrode respectively positioned on top and bottom surface thereof, deposited on said substrate;
Specification