Chemically-resistant sensor devices, and systems and methods for using same
AssigneeGeneral Electric Company
InventorsRadislav Alexandrovich Potyrailo, Joseph Richard Wetzel
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Abstract
A sensor device is disclosed, as well as methods and systems for determining a barrier property of each coating of an array of barrier coatings deposited onto a fluid-permeable or fluid-impermeable substrate. The systems and methods include the sensor device having a sensing layer responsive to a fluid of interest for which the barrier property of the array of coatings are desired to be determined. The sensor device further includes an overlayer disposed between the array of barrier coatings and the sensing layer. The overlayer protects the sensing layer from being damaged by the coatings.
Claims36
A sensor device for determining a barrier property of a coating with respect to a fluid of interest, the sensor device comprising:
- a substrate;
- a sensing layer on the substrate comprising a material having a predetermined response to an exposure to the fluid of interest;
- a protective overlayer that covers the sensing layer, wherein the protective overlayer comprises a chemically-resistant and a solvent-resistant material that allows for the transport of the fluid to the sensing layer;
- and
- an array of barrier coatings having spatial variations of permeability across the array of barrier coatings.
A system for determining a barrier property of an array of barrier coatings with respect to a fluid of interest, comprising:
- a sensor device on which the array of barrier coatings are disposed, the sensor device having a substrate, a sensing layer and a protective overlayer that covers the sensing layer, where onto the protective layer are applied the array of barrier coatings, the sensing layer comprising a material having a predetermined response to an exposure to the material of interest, the overlayer comprising a chemically-resistant and a solvent-resistant material that allows for the transport of the fluid to the sensing layer;
- a radiation source having an output for generating a reference radiation directable toward the sensor device, wherein an interaction between the reference radiation and the sensor device generates a resultant radiation;
- and
- a detector for measuring characteristics of the resultant radiation, wherein the measured characteristics of the resultant radiation are relatable to a barrier property for each of the array of barrier coatings.
A device for mapping of barrier coatings, the device comprising:
- a sensor with a substrate having at least one external surface;
- a sensing layer on the substrate
- a protective overlayer that covers the sensing layer, wherein the protective overlayer is applied to at least one external surface, wherein the protective overlayer comprises a chemically-resistant and a solvent-resistant material that allows for the transport of a fluid of interest to the sensor;
- an array of barrier coatings in a library deposited onto the protective overlayer;
- and
- a measurement device for measuring variation in analytical signal for the array of barrier coatings exposed to the fluid of interest.
A method for measuring barrier properties of barrier coatings, the method comprising:
- providing a chemical sensor having at least one external surface;
- applying to a substrate a sensing layer to at least one external surface;
- applying a protective overlayer that covers the sensing layer to the at least one external surface of the chemical sensor, the protective overlayer comprising a chemically-resistant and a solvent-resistant material that allows for the transport of a fluid of interest to the sensing layer;
- placing an array of barrier coatings on the protective overlayer;
- exposing the array of barrier coatings to the fluid of interest;
- and
- measuring a variation in the barrier properties of the array of barrier coatings.
Dependencies are inferred from the claim text.