Graphene-based indicator
AssigneeBrady Worldwide, Inc.
InventorJ. Michael Nauman
Life of this patent
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Abstract
A sensor product for detecting an analyte or condition. The sensor product having a body and a circuit integrated with the body. The circuit including an electric power source, a sensing element comprising graphene or a graphene derivative in which the sensing element is configured to undergo a change in an electrical property in the presence of an analyte or condition, and an indicator configured to display information indicating the presence of the analyte or condition when the change in an electrical property of the sensing element occurs. For instance, the indicator may display “DANGER EVACUATE” in the presence of chlorine gas, elevated temperatures, or other analytes or conditions.
Claims26
A sensor product for detecting an analyte or condition, the sensor product comprising:
- a body;
- and
- a circuit integrated with the body, the circuit comprising:
- an electric power source;
- a sensing element comprising graphene or a graphene derivative, the sensing element configured to undergo a change in an electrical property in the presence of an analyte or condition;
- and
- an indicator configured to display information indicating the presence of the analyte or condition when the change in an electrical property of the sensing element occurs wherein the condition is selected from the group consisting of a change in humidity and a change in temperature.
A method of sensing an analyte or condition, comprising the steps of:
- monitoring the electrical property in a sensing element comprising graphene or a graphene derivative, the sensing element configured to undergo a change in an electrical property in the presence of an analyte or condition wherein the condition is selected from the group consisting of a change in humidity and a change in temperature;
- and
- displaying information indicating the presence of the analyte or condition when the change in an electrical property of the sensing element occurs, the information being displayed by an indicator on a sensor body to which the sensing element is integrated.
Dependencies are inferred from the claim text.