Abstract: A flow-through gas cell and a method for passing a sample gas through a flow-through gas cell for spectroscopy are disclosed. In an embodiment, a flow-through gas cell is disclosed. The gas cell includes a substantially cylindrical interior cavity. The interior cavity comprises an inner surface that is reflective. In addition, the gas cell includes a gas inlet and a gas outlet. In the gas cell, a source is disposed on a side of the gas cell, and a detector is disposed on the same side of the gas cell as the source. The source emits electromagnetic radiation, and the detector detects electromagnetic radiation. The gas cell further includes mirrors disposed on opposing ends of the interior cavity.

Abstract: A flow-through gas cell and a method for passing a sample gas through a flow-through gas cell for spectroscopy are disclosed. In an embodiment, a flow-through gas cell is disclosed. The gas cell includes a substantially cylindrical interior cavity. The interior cavity comprises an inner surface that is reflective. In addition, the gas cell includes a gas inlet and a gas outlet. In the gas cell, a source is disposed on a side of the gas cell, and a detector is disposed on the same side of the gas cell as the source. The source emits electromagnetic radiation, and the detector detects electromagnetic radiation. The gas cell further includes mirrors disposed on opposing ends of the interior cavity.

Abstract: A chemical sensor for detecting the presence of one or more analytes. The sensor comprises at least one electrode pair and a photopolymerized electrically conducting polymer composition disposed in contact between each of the electrode pairs. Each polymer composition may include an organic polymer capable of interacting with one or more analytes. The sensor also comprises a means for delivering an analyte to each polymer composition, and a means for processing the resultant electronic signal from each polymer composition and electrode pair. Preferably, the sensor comprises a plurality of different polymer compositions, each with a dedicated electrode pair, to generate a collection of signals that provide a fingerprint unique to a particular analyte.

Abstract: A chemical sensor for detecting the presence of one or more analytes. The sensor comprises at least one electrode pair and a photopolymerized electrically conducting polymer composition disposed in contact between each of the electrode pairs. Each polymer composition may include an organic polymer capable of interacting with one or more analytes. The sensor also comprises a means for delivering an analyte to each polymer composition, and a means for processing the resultant electronic signal from each polymer composition and electrode pair. Preferably, the sensor comprises a plurality of different polymer compositions, each with a dedicated electrode pair, to generate a collection of signals that provide a fingerprint unique to a particular analyte.