Chemical and Physical Sensing with a Reader and RFID Tags
AssigneeMassachusetts Institute of Technology
InventorsTimothy Manning SWAGER, Joseph Michael AZZARELLI, Jens Bomholdt RAVNSBAEK, Katherine Andrea MIRICA
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Abstract
A method of detecting a stimulus can include detecting an output from a radio frequency identification tag including a sensor. A smartphone-based sensing strategy can use chemiresponsive nanomaterials integrated into the circuitry of commercial Near Field Communication tags to achieve non-line-of-sight, portable, and inexpensive detection and discrimination of gas phase chemicals (e.g., ammonia, hydrogen peroxide, cyclohexanone, and water) at part-per-thousand and part-per-million concentrations.
Claims21
1-45. (canceled)
A circuit for detecting a stimulus comprising an inductive element, a capacitive element, a resistive element, and a sensor portion, the sensor portion configured to change one or more of its properties when the stimulus contacts or interacts with the sensor portion to alter a wirelessly detectable characteristic of the circuit.
The system of claim 52, wherein a portion of the reader is inductively coupled to the circuit of claim 0.
The method of claim 6261, wherein a new instance is an alert, a notification, a text message, an email, or another form of datum or data transmission.
Dependencies are inferred from the claim text.