Abstract: Sensors for detecting analytes are disclosed. In various implementations, the sensing device may include a substrate and a sensor array. The sensor array may be arranged on the substrate, and may include a plurality of sensors. In some implementations, at least two of the sensors may include a first carbon-based sensing material disposed between a first pair of electrodes, and a second carbon-based sensing material disposed between a second pair of electrodes. The first carbon-based sensing material may be configured to detect a presence of each analyte of a group of analytes, and the second carbon-based sensing material may be configured to confirm the presence of each analyte of a subset of the group of analytes. In some instances, the group of analytes includes at least twice as many different analytes as the subset of analytes.

Abstract: A wind shield for shielding an open-flame heater, such as an alcohol burner, used in connection with warm food serving apparatus, such as a chafing dish, includes first and second barrier walls joined together in a unitary L-shaped structure which is self-supporting along an edge thereof when placed adjacent the heater so as to provide a barrier against spurious drafts which otherwise might extinguish the flame of the heater.