Micro-bridge structure
First Claim
1. A bolometer comprising a support element forming a micro-bridge structure on a substrate, said support element comprising substantially a single layer of support material and carrying on its underside a resistive sensing material, wherein said support element is arranged to absorb incident radiation.
2 Assignments
0 Petitions
Accused Products
Abstract
A method of fabricating a micro-bridge device (14, 16) onto a substrate (20). The method includes the steps of: providing a sacrificial material (32) on a surface region of the substrate (20); patternwise etching the sacrificial material (32); providing a sensing material (34) on a surface region of the sacrificial material; providing a support material (36) on a surface region of the sensing material; and removing the sacrificial material (32) leaving support material (36) with the sensing material (34) on its lower surface, substantially free standing above the substrate (20).
36 Citations
21 Claims
- 1. A bolometer comprising a support element forming a micro-bridge structure on a substrate, said support element comprising substantially a single layer of support material and carrying on its underside a resistive sensing material, wherein said support element is arranged to absorb incident radiation.
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11. A method of fabricating a bolometer including a micro-bridge structure onto a substrate having the steps of:
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a. providing a sacrificial material on a surface region of the substrate; b. patternwise etching the sacrificial material; c. providing a sensing material on a surface region of the sacrificial material; d. providing a support material on a surface region of the sensing material; and e. removing the sacrificial material leaving support material with the sensing material on its lower surface, substantially free standing above the substrate. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A bolometer comprising a micro-bridge structure having a substrate above which there is provided a support element, arranged to absorb incident radiation, and on the underside of said support element there is provided a resistive sensing material arranged to change resistance in response to incident radiation, said sensing material being supported above said substrate by said support element but connected at connecting regions to tracks on said substrate and said support element running from a region adjacent said substrate and comprising substantially a single layer of material.
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20. A resistive bolometer apparatus comprising a continuous layer of support material forming a micro-bridge over a substrate and at least one continuous track of sensing material on the underside of said support material.
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21. A method of forming a micro-bridge bolometer device wherein a layer of resistive sensing material is provided prior to providing a layer of support material forming said micro-bridge.
Specification