Abstract: An apparatus is provided for sensing an analyte in a fluid.

Abstract: An apparatus for sensing an analyte in a gas. The apparatus includes a gas collecting device within the apparatus for collecting the gas containing the analyte; a gas input in fluid communication with the gas collecting device for inputting the gas containing the analyte into the gas collecting device; an analyte interactant in fluid communication with the gas collecting device, wherein the analyte interactant, when contacted by the analyte, reacts to cause a change in thermal energy within the gas collecting device, and wherein the analyte interactant is disposed in a plurality of regions separate from one another; and a thermopile device that includes at least one thermopile thermally coupled to the gas collecting device to generate a signal in response to the change in thermal energy, wherein the signal embodies information useful in characterizing the analyte. The apparatus also may comprise a processor for processing such signals. A related method also is disclosed.

Abstract: An apparatus is provided for sensing an analyte in a fluid.

Abstract: An apparatus for sensing at least one analyte in a gas. The apparatus includes a thermoelectric sensor having a layer of at least one analyte interactant that increases or decreases in temperature and at least one thermopile having a first contact pad and a second contact pad, wherein the analyte contacts the interactant and produces or consumes heat, which is transmitted to the thermopile, produces a voltage difference and measures the analyte.