Device for Measurement of Exhaled Nitric Oxide Concentration

摘要

Described is a personal device and methods for measuring the concentration of an analyte in a sample of gas. The device and method may utilize a chemically selective sensor element with low power consumption integrated with circuitry that enables wireless communication between the sensor and any suitable electronic readout such as a smartphone, tablet, or computer. In preferred form, the sensor circuitry relies upon the quantum capacitance effect of graphene as a transduction mechanism. Also in preferred form, the device and method employ the functionalization of the graphene-based sensor to determine the concentration of nitric oxide in exhaled breath.

主权项

1. A device for detecting an analyte, comprising:
one or more analyte sensors, at least one comprising a graphene-based variable capacitor; and a wireless transmitter;wherein
at least one of the graphene-based variable capacitor comprises:
a dielectric layer;a graphene layer which is substantially supported by the dielectric layer; anda modifying layer in contact with the graphene layer; and the device is configured to detect nitric oxide.