Chemical and physical sensing with a reader and RFID tags
First Claim
1. A method of detecting a stimulus comprising detecting an output from a radio frequency identification tag including a sensor portion, the sensor portion configured to change resistivity when the stimulus contacts or interacts with the radio frequency identification tag, whereby the resistivity change alters the output of the radio frequency identification tag,wherein the radio frequency identification tag includes a carbon nanotube or multiple carbon nanotubes.
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Accused Products
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.
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Citations
44 Claims
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1. A method of detecting a stimulus comprising detecting an output from a radio frequency identification tag including a sensor portion, the sensor portion configured to change resistivity when the stimulus contacts or interacts with the radio frequency identification tag, whereby the resistivity change alters the output of the radio frequency identification tag,
wherein the radio frequency identification tag includes a carbon nanotube or multiple carbon nanotubes.
- 31. A tag for detecting a stimulus comprising a radio frequency identification tag including a sensor portion, the sensor portion configured to change resistivity when the radio frequency identification tag contacts or interacts with the stimulus, whereby the resistivity change alters an output of the radio frequency identification tag, wherein the sensor portion includes a circuit, and wherein the sensor portion is configured to activate the circuit or deactivate the circuit when contacted or having interacted with the stimulus and wherein the radio frequency identification tag includes a carbon nanotube or multiple carbon nanotubes.
- 34. A system for detecting a stimulus comprising a radio frequency identification tag including a sensor portion, the sensor portion configured to change resistivity when the radio frequency identification tag contacts or interacts with the stimulus, whereby the resistivity change alters an output of the radio frequency identification tag, and a detector detecting the output from the radio frequency identification tag, wherein the radio frequency identification tag includes a carbon nanotube or multiple carbon nanotubes.
Specification