发明名称 |
Wireless Chemical Sensing Method |
摘要 |
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. |
申请公布号 |
US2016238561(A1) |
申请公布日期 |
2016.08.18 |
申请号 |
US201615141217 |
申请日期 |
2016.04.28 |
申请人 |
U.S.A. as represented by the Administrator of the National Aeronautics and Space Administration |
发明人 |
Woodard Stanley E.;Oglesby Donald M.;Taylor Bryant D. |
分类号 |
G01N27/72 |
主分类号 |
G01N27/72 |
代理机构 |
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代理人 |
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主权项 |
1. A method of sensing the presence of a chemical-of-interest, comprising the steps of:
providing an electrical conductor having first and second ends and shaped 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; positioning a material in a spaced-apart relationship with respect to said electrical conductor at a location lying within at least one of said electric and magnetic field responses so-generated, said material changing in electrical conductivity in the presence of a chemical-of-interest; disposing an electric insulator between said electrical conductor and said material; recording a baseline response for said at least one of said electric and magnetic field responses so-generated when the chemical-of-interest is not present; and monitoring said at least one of said electric and magnetic field responses so-generated for changes with respect to said baseline response as an indication of the presence of the chemical-of-interest. |
地址 |
WASHINGTON DC US |