Sensor system and method
A sensor system includes a sensing element having a section of a layer assembly deposited onto a substrate. The layer assembly includes plural layers of different materials. The section of the layer assembly is configured to be etched to form plural individual pillars of the plural layers of the different materials. The individual pillars are configured to be in contact with a fluid to sense one or more analyte fluid components within the fluid. The sensing element is configured to generate a sensor signal responsive to the individual pillars being in contact with the fluid. The sensor system includes one or more processors configured to receive the sensor signal from the sensing element. The one or more processors may identify the one or more analyte fluid components within the fluid and an amount of each of the analyte fluid components within the fluid based on the sensor signal.
1. A sensor system comprising:
a sensing element comprising plural individual pillars of layer assemblies deposited onto a substrate, the plural individual pillars of layer assemblies each comprising a plurality of nanoparticle layers and open regions for interaction between nanoparticles and a fluid, wherein a first nanoparticle layer of the plurality of nanoparticle layers comprises nanoparticles of a first material configured to sense a first analyte fluid component of the fluid and a second nanoparticle layer of the plurality of nanoparticle layers comprises nanoparticles of a second material different from the first material and configured to sense a second analyte fluid component of the fluid different from the first analyte fluid component, wherein the sensing element is configured to generate two or more sensor signals responsive to one or both of the nanoparticles of the first material being in the presence of the first analyte fluid component or the nanoparticles of the second material being in the presence of the second analyte fluid component when in contact with the fluid; and
one or more processors configured to receive the two or more sensor signals from the sensing element, the one or more processors configured to identify the first analyte fluid component, the second analyte fluid component, or both within the fluid, an amount of the first analyte fluid component or the second analyte fluid component within the fluid based on the two or more sensor signals, or a combination thereof.
2. The sensor system of claim 1 , wherein the plural individual pillars of layer assemblies each comprise one or more support layers between two of the nanoparticle layers and the open regions, and wherein the first material and the second material include different materials of a first type, and the one or more support layers include materials of a second type.
3. The sensor system of claim 2 , wherein the first material and the second material of the first type comprise one or more metallic materials, and the materials of the second type comprise a dielectric material.
4. The sensor system of claim 1 , wherein a third nanoparticle layer of the plurality of nanoparticle layers comprises nanoparticles of the first material, and a fourth nanoparticle layer of the plurality of nanoparticle layers comprises nanoparticles of the second material.
5. The sensor system of claim 4 , further comprising a gap disposed between the first nanoparticle layer and the second nanoparticle layer.
6. The sensor system of claim 1 , wherein the nanoparticles of the first material have a size that is different than a size of the nanoparticles of the second material.
7. The sensor system of claim 1 , wherein the first nanoparticle layer and the second nanoparticle layer are separated by the open regions.
8. The sensor system of claim 1 , wherein the plural individual pillars are separated from each other by at least one void between two of the plural individual pillars.