Systems and methods for gamma radiation based stabilization of replicated mirror structures at the nanometer-scale

Patent metadata

Field	Value
Publication number	US-11762301-B2
Application number	US-202117379753-A
Country	US
Kind code	B2
Filing date	Jul 19, 2021
Priority date	Jul 23, 2018
Publication date	Sep 19, 2023
Grant date	Sep 19, 2023

Abstract

An assembly comprises an exposure chamber configured to receive a structure and identify at least one portion of the structure for further processing. The exposure chamber is further configured to expose the at least one portion of the structure to radiation such that a high cure state and a low residual stress are achieved for the structure. A dosage level of the radiation is determined based, at least in part, on the composition of the structure.

First claim

What is claimed is:

1. An assembly comprising:
an exposure chamber configured to receive a structure and expose at least one portion of the structure to radiation;
a cure state monitor configured to identify the at least one portion of the structure for further processing; and
a control system operatively coupled to the exposure chamber and the state monitor, wherein the control system is configured to control dosage of the radiation such that a high cure state and a low residual stress are achieved for the structure, wherein a dosage level of the radiation is determined based, at least in part, on the composition of the structure.

2. The assembly of claim 1 , wherein the structure is an optical substrate.

3. The assembly of claim 2 , wherein the optical substrate is formed of a glass or composite material.

4. The assembly of claim 1 , wherein the assembly is configured to receive a support structure configured to attach to the structure, wherein the support structure is formed of a metal, glass, or composite material.

5. The assembly of claim 1 , further comprising an additional exposure chamber adjacent to said exposure chamber, wherein said additional exposure chamber is configured to expose the at least one portion of the structure to ultra violet (UV) light such that at least a partial cure state is achieved for the structure prior to exposure in said exposure chamber, wherein a dosage level of the UV light is based, at least in part, on the composition of the structure.

6. The assembly of claim 1 , further comprising a mixing apparatus configured to mix an adhesive material, to be applied to the structure, with a plurality of nano-filler particles prior to the structure's exposure in said exposure chamber.

7. The assembly of claim 1 , further comprising an additional exposure chamber configured to expose the structure to heat, wherein a level of heat exposure is based, at least in part, on the composition of the structure.

8. A method comprising: receiving a structure; using a cure state monitor to identify at least one portion of the structure for further processing; and exposing the at least one portion of the structure to radiation such that a high cure state and a low residual stress are achieved for the structure, wherein a dosage level of the radiation is determined based, at least in part, on the composition of the structure.

9. The method of claim 8 , wherein the structure is an optical substrate formed of a glass or composite material.

10. The method of claim 8 , further comprising receiving a support structure configured to attach to the structure, wherein the support structure is formed of a metal, glass, or composite material.

11. The method of claim 8 , further comprising exposing the at least one portion of the structure to ultra violet (UV) light such that at least a partial cure state is achieved for the structure prior to exposing the at least one portion of the structure to radiation such that a high cure state is achieved for the structure, wherein a dosage level of the UV light is based, at least in part, on the composition of the structure.

12. The method of claim 8 , further comprising mixing an adhesive material, to be applied to the structure, with a plurality of nano-filler particles prior to exposing the at least one portion of the structure to radiation such that a high cure state is achieved for the structure.

13. The method of claim 8 , further comprising exposing the structure to heat, wherein a level of heat exposure is based, at least in part, on the composition of the structure.

14. A system comprising:
a control system configured to control a dosage of radiation based, at least in part, on composition of a structure; and
an assembly comprising:
an exposure chamber configured to:
receive the structure and expose at least a portion of the structure to radiation;
a cure state monitor configured to identify the at least one portion of the structure for further processing,
wherein the control system controls the dosage of the radiation such that a high cure state and a low residual stress are achieved for the structure.

15. The system of claim 14 , wherein the structure is an optical substrate.

16. The system of claim 15 , wherein the optical substrate is formed of a glass or composite material.

17. The system of claim 14 , wherein the assembly is configured to receive a support structure configured to attach to the structure, wherein the support structure is formed of a metal, glass, or composite material.

18. The system of claim 14 , wherein the assembly further comprises an additional exposure chamber adjacent to said exposure chamber, wherein said additional exposure chamber is configured to expose the at least one portion of the structure to ultra violet (UV) light such that at least a partial cure state is achieved for the structure prior to exposure in said exposure chamber, wherein a dosage level of the UV light is based, at least in part, on the composition of the structure.

19. The system of claim 14 , wherein said assembly further comprises a mixing apparatus configured to mix an adhesive material, to be applied to the structure, with a plurality of nano-filler particles prior to the structure's exposure in said exposure chamber.

20. The system of claim 14 , wherein said assembly further comprises an additional exposure chamber configured to expose the structure to heat, wherein a level of heat exposure is based, at least in part, on the composition of the structure.

Assignees

• Aerospace Corp

Inventors

• Zaldivar Rafael J
• Ferrelli Geena L
• Kim Hyun I

Classifications

• B29C35/0288 Primary

  Controlling heating or curing of polymers during moulding, e.g. by measuring temperatures or properties of the polymer and regulating the process (controlling or regulating chemical, physical or physico- chemical processes in general B01J19/0006) · CPC title

• G03F7/70558 Primary

  Dose control, i.e. achievement of a desired dose · CPC title

• B29C35/0805

  using electromagnetic radiation · CPC title

• B29C2791/005

  Using a particular environment, e.g. sterile fluids other than air · CPC title

• B29C2035/0827

  using UV radiation · CPC title