IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0463475
(2009-05-11)
|
등록번호 |
US-8673649
(2014-03-18)
|
발명자
/ 주소 |
- Woodard, Stanley E.
- Oglesby, Donald M.
- Taylor, Bryant Douglas
|
출원인 / 주소 |
- The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
14 |
초록
▼
A wireless chemical sensor includes an electrical conductor and a material separated therefrom by an electric insulator. The electrical conductor is an unconnected open-circuit shaped for storage of an electric field and a magnetic field. In the presence of a time-varying magnetic field, the first e
A wireless chemical sensor includes an electrical conductor and a material separated therefrom by an electric insulator. The electrical conductor is an unconnected open-circuit shaped for storage of an electric field and a magnetic field. In the presence of a time-varying magnetic field, the first electrical conductor resonates to generate harmonic electric and magnetic field responses. The material is positioned at a location lying within at least one of the electric and magnetic field responses so-generated. The material changes in electrical conductivity in the presence of a chemical-of-interest.
대표청구항
▼
1. A wireless chemical sensor, comprising: an electrical conductor having first and second ends and shaped to form a pattern between said first and second ends for storage of an electric field and a magnetic field, said first and second ends remaining electrically unconnected such that said electric
1. A wireless chemical sensor, comprising: an electrical conductor having first and second ends and shaped to form a pattern between said first and second ends for storage of an electric field and a magnetic field, said first and second ends remaining electrically unconnected such that said electrical conductor so-shaped defines an unconnected open-circuit having inductance and capacitance wherein, in the presence of a time-varying magnetic field, said electrical conductor so-shaped resonates to generate harmonic electric and magnetic field responses, each of which has a frequency, amplitude and bandwidth associated therewith;a material entirely spanning said pattern while being spaced apart from said electrical conductor at a location lying within at least one of said electric and magnetic field responses so-generated, said material selected to affect attenuation of energy associated with said electric and magnetic field responses so-generated in the presence of a chemical-of-interest; andan electric insulator disposed between said electrical conductor and said material. 2. A wireless chemical sensor as in claim 1, further comprising a magnetic field response recorder for wirelessly transmitting said time-varying magnetic field to said electrical conductor and for wirelessly detecting said frequency, amplitude and bandwidth associated with said magnetic field response so-generated. 3. A wireless chemical sensor as in claim 1, further comprising an electric field response recorder for wirelessly transmitting said time-varying magnetic field to said electrical conductor and for wirelessly detecting said frequency, amplitude and bandwidth associated with said electric field response so-generated. 4. A wireless chemical sensor as in claim 1, wherein said electrical conductor comprises a thin-film trace. 5. A wireless chemical sensor as in claim 4, wherein said trace is uniform in width. 6. A wireless chemical sensor as in claim 4, wherein spacing between adjacent portions of said trace is uniform. 7. A wireless chemical sensor as in claim 4, wherein said trace is non-uniform in width. 8. A wireless chemical sensor as in claim 4, wherein spacing between adjacent portions of said trace is non-uniform. 9. A wireless chemical sensor as in claim 1, wherein said material is adapted to chemically react with the chemical-of-interest. 10. A wireless chemical sensor as in claim 1, wherein said material is adapted to absorb the chemical-of-interest. 11. A wireless chemical sensor as in claim 1, wherein said material comprises a sheet thereof. 12. A wireless chemical sensor as in claim 1, wherein said electric insulator comprises air. 13. A wireless chemical sensor as in claim 1, wherein said electric insulator encases said electrical conductor. 14. A wireless chemical sensor as in claim 1, wherein said electrical conductor and said material are coupled to said electric insulator. 15. A wireless chemical sensor as in claim 1, wherein said electrical conductor, said material, and said electric insulator are flexible. 16. A wireless chemical sensor, comprising: an electrical conductor in the form of a thin-film trace having first and second ends and shaped to form a pattern that can store an electric field and a magnetic field, said first and second ends remaining electrically unconnected such that said electrical conductor so-shaped defines an unconnected open-circuit having inductance and capacitance wherein, in the presence of a time-varying magnetic field, said electrical conductor so-shaped resonates to generate harmonic electric and magnetic field responses, each of which has a frequency, amplitude and bandwidth associated therewith;a material entirely spanning said pattern while being spaced apart from said electrical conductor at a location lying within at least one of said electric and magnetic field responses so-generated, said material selected to affect attenuation of energy associated with said electric and magnetic field responses so-generated in the presence of a chemical-of-interest;an electric insulator disposed between said electrical conductor and said material; anda field response recorder for wirelessly transmitting said time-varying magnetic field to said electrical conductor and for wirelessly detecting said frequency, amplitude and bandwidth associated with at least one of said electric and magnetic field responses so-generated. 17. A wireless chemical sensor as in claim 16, wherein said trace is uniform in width. 18. A wireless chemical sensor as in claim 16, wherein spacing between adjacent portions of said trace is uniform. 19. A wireless chemical sensor as in claim 16, wherein said trace is non-uniform in width. 20. A wireless chemical sensor as in claim 16, wherein spacing between adjacent portions of said trace is non-uniform. 21. A wireless chemical sensor as in claim 16, wherein said material is adapted to chemically react with the chemical-of-interest. 22. A wireless chemical sensor as in claim 16, wherein said material is adapted to absorb the chemical-of-interest. 23. A wireless chemical sensor as in claim 16, wherein said material comprises a sheet thereof. 24. A wireless chemical sensor as in claim 16, wherein said electric insulator comprises air. 25. A wireless chemical sensor as in claim 16, wherein said electric insulator encases said electrical conductor. 26. A wireless chemical sensor as in claim 16, wherein said electrical conductor and said material are coupled to said electric insulator. 27. A wireless chemical sensor as in claim 16, wherein said electrical conductor, said material, and said electric insulator are flexible.
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