Dynamical liquid sensors
AssigneesToyota Motor Engineering & Manufacturing North America, Inc., Toyota Jidosha Kabushiki Kaisha
InventorsYukihiro Tadokoro, Taewha Lee, Ziqi Yu, Xiaopeng Li, Taishi Kimura
Life of this patent
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Abstract
A sensor includes a tweezer source configured to manipulate a defect nanoparticle in a liquid to a desired position in an enclosure containing the liquid and a light source configured to optically excite the defect nanoparticle in the liquid at the desired position. The sensor also includes a radio frequency (RF) excitation source configured to RF excite the defect nanoparticle in the liquid at the desired position and an optical detector configured to receive an optical signal emitted from the optically excited defect nanoparticle.
Claims20
A sensor comprising:
- an enclosure containing a liquid;
- at least one defect nanoparticle disposed and moveable within the liquid;
- a tweezer source configured to manipulate and move the at least one defect nanoparticle in the liquid to a desired position in the enclosure;
- a light source configured to optically excite the defect nanoparticle in the liquid when moved to the desired position by the tweezer source;
- a radio frequency (RF) excitation source configured to RF excite the defect nanoparticle in the liquid when moved to the desired position by the tweezer source;
- and
- an optical detector configured to receive an optical signal emitted from the optically excited defect nanoparticle.
A sensor comprising:
- an enclosure containing a liquid and at least one defect nanoparticle disposed and moveable within the liquid;
- a tweezer source configured to manipulate and move a defect nanoparticle in the liquid to a desired position in the enclosure;
- a light source configured to optically excite the defect nanoparticle in the liquid when moved to the desired position by the tweezer source;
- a radio frequency (RF) excitation source configured to RF excite the defect nanoparticle in the liquid at a range of RF frequencies when moved to the desired position by the tweezer source;
- an optical detector configured to receive an optical signal emitted from the optically excited defect nanoparticle;
- and
- a controller configured to determine a property of the liquid as a function of the optical signal.
A method comprising:
- manipulating and moving a defect nanoparticle in a liquid with a tweezer source such that the defect nanoparticle is located at a desired position in an enclosure containing the liquid;
- optically exciting, with a light source, the defect nanoparticle in the liquid at the desired position;
- radio frequency (RF) exciting, with an RF source, the defect nanoparticle in the liquid at the desired position with a range of RF frequencies;
- detecting an optical signal, with an optical detector, from the optically excited defect nanoparticle as a function of the range of RF frequencies;
- and
- determining, with a controller, a property of the liquid as a function of the detected optical signal.
Dependencies are inferred from the claim text.