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 device including a sensor portion and nanomaterials integrated into circuitry of the radio frequency device, the sensor portion configured to change a detectable property of the circuitry when the stimulus contacts or interacts with the radio frequency device, whereby the detectable property change alters the output of the radio frequency device.
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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
29 Claims
- 1. A method of detecting a stimulus comprising detecting an output from a radio frequency device including a sensor portion and nanomaterials integrated into circuitry of the radio frequency device, the sensor portion configured to change a detectable property of the circuitry when the stimulus contacts or interacts with the radio frequency device, whereby the detectable property change alters the output of the radio frequency device.
- 16. A tag for detecting a stimulus comprising a radio frequency device including a sensor portion and nanomaterials integrated into the circuitry of the radio frequency device, the sensor portion configured to change a detectable property of the circuitry when the radio frequency device contacts or interacts with the stimulus, whereby the detectable property change alters an output of the radio frequency device, 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.
- 19. A system for detecting a stimulus comprising a radio frequency device including a sensor portion and nanomaterials integrated into the circuitry of the radio frequency device, the sensor portion configured to change a detectable property of the circuitry when the radio frequency device contacts or interacts with the stimulus, whereby the detectable property change alters an output of the radio frequency device, and a detector detecting the output from the radio frequency device.
Specification