Substrate including scintillator materials, system including substrate, and method of use

Patent metadata

Field	Value
Publication number	US-11054530-B2
Application number	US-201816196215-A
Country	US
Kind code	B2
Filing date	Nov 20, 2018
Priority date	Nov 24, 2017
Publication date	Jul 6, 2021
Grant date	Jul 6, 2021

Abstract

A substrate can include at least two scintillator materials that are mixed at a predetermined ratio. In an embodiment, the scintillator materials can have a decay time difference of at least 50% when exposed to a same radiation source. In another embodiment, the scintillator materials can have a maximum emission wavelength difference of at least 25 nm when exposed to a same radiation source. At least one of the scintillator materials has a decay time of at most 10 μs. A system can include the substrate and a logic element configured to determine an identity represented by the substrate. A method can include generating an electronic pulse in response to the substrate being exposed to a radiation source; and analyzing the electronic pulse to determine an identity represented by the substrate.

First claim

What is claimed is:

1. A substrate, comprising a first scintillator material and a second scintillator material that is different from the first scintillator material, wherein:
the first and second scintillator materials are present in the substrate at a predetermined ratio; and
the first and second scintillator materials have a decay time difference of at least 50% and a maximum emission wavelength difference of at least 25 nm when exposed to a same radiation source,
wherein at least one of the first and second scintillator materials comprises a chelate, an organosilicon compound, and organo-metallic compound, or a triplet harvesting organic compound.

2. The substrate of claim 1 , wherein the substrate includes a fiber, a thread, a plastic film, an ink, or any combination thereof.

3. The substrate of claim 1 , wherein each of the first and second scintillator materials has a decay time of at most 1 μs.

4. The substrate of claim 1 , wherein at least one of the first and second scintillator materials has a decay time of at most 100 ns.

5. The substrate of claim 1 , wherein at least one of the first and second scintillator materials comprises an inorganic compound.

6. The substrate of claim 1 , wherein at least one of the first and second scintillator materials comprises an organic material.

7. The substrate of claim 1 , wherein the first scintillator material is mixed with the second scintillator material.

8. The substrate of claim 1 , wherein at least one of the first and second scintillator materials comprises p-terphenyl (C 18 H 14 ), 2,5-diphenyloxazole (PPO, C 15 H 11 NO), 1,1,4,4,-tetraphenylbutadiene (TBP, C 28 H 22 ), 1,2,4-trimethyl benzene (C 9 H 12 ), dimethyl stilbene (DPS, C 26 H 18 ), bis-MSB (C 24 H 22 ), dimethyl POPOP (C 26 H 20 N 2 O), K27 (C 26 H 14 O 6 N 6 S 2 Ru), tris [1-phenylisoquinolinato] iridum (III) (C 15 NlrH 10 ), or a combination thereof.

9. The substrate of claim 1 , wherein the first or the second scintillator material is not sensitive to a visible light.

10. A system, comprising:
the substrate of claim 1 ; and
a logic element configured to determine an identity represented by the substrate based at least in part on a decay time, a maximum emission wavelength, or both.

11. The system of claim 10 , wherein the logic element includes a field programmable gate array, application-specific integrated circuit, a processor, or a combination thereof.

12. A substrate, comprising a first scintillator material and a second scintillator material that is different from the first scintillator material, wherein:
the first and second scintillator materials are present in the substrate at a predetermined ratio; and
each of the first and second scintillator materials has a decay time of at most 10 μs and a maximum emission wavelength difference of at least 25 nm when exposed to a same radiation source, wherein at least one of the first and second scintillator materials comprises a chelate, an organosilicon compound, an organo-metallic compound, or a triplet harvesting organic compound.

13. The substrate of claim 12 , wherein each of the first and second scintillator materials has a decay time of at most 100 ns.

14. The substrate of claim 12 , wherein the organic material comprise p-terphenyl (C 18 H 14 ), 2,5-diphenyloxazole (PPO, C 15 H 11 NO), 1,1,4,4,-tetraphenylbutadiene (TBP, C 28 H 22 ), 1,2,4-trimethyl benzene (C 9 H 12 ), dimethyl stilbene (DPS, C 26 H 18 ), bis-MSB (C 24 H 22 ), dimethyl POPOP (C 26 H 20 N 2 O), K27 (C 26 H 14 O 6 N 6 S 2 Ru), tris [1-phenylisoquinolinato] iridum (III) (C 15 NlrH 10 ), or a combination thereof.

15. The substrate of claim 12 , wherein at least one of the scintillator materials emits a scintillation light having a wavelength from 390 nm to 700 nm when exposed to the radiation source.

16. The substrate of claim 15 , wherein the scintillation light forms a predetermined pattern.

17. The substrate of claim 12 , wherein the substrate further comprises a third scintillator material that is different from the first and second scintillator materials.

18. A method, comprising: generating an electronic pulse in response to a substrate being exposed to a radiation source; analyzing the electronic pulse; and determining an identity represented by the substrate based on the electronic pulse, wherein determining the identity represented by the substrate comprises determining a composition of the substrate that includes at least two different scintillator materials that have a decay time difference of at least 50% and a maximum emission wavelength difference of at least 25 nm, wherein at least one of the at least two different scintillator materials comprises a chelate, an organosilicon compound, an organo-metallic compound, or a triplet harvesting organic compound.

19. The method of claim 18 , wherein the radiation source emits an ultraviolet light having a pulse time of at most 500 ns.

20. The method of claim 18 , wherein analyzing the electronic pulse comprises obtaining a decay time, a maximum emission wavelength, or a combination thereof based on the electronic pulse.

Assignees

• Saint Gobain Ceramics

Inventors

• Menge Peter R

Classifications

• G07D7/206

  Matching template patterns · CPC title

• C09K11/02

  Use of particular materials as binders, particle coatings or suspension media therefor · CPC title

• G07D7/06

  using wave or particle radiation · CPC title

• G07D7/205

  Matching spectral properties · CPC title

• C09K11/06 Primary

  containing organic luminescent materials · CPC title