Compact Chemical Identifier Based on Plasmonic Metasurface Integrated with Microbolometer Array

Abstract

The identification of chemicals from their mid-infrared spectra has applications that include industrial production of chemicals, food production, pharmaceutical manufacturing, and environmental monitoring. This is generally done using laboratory benchtop tools, such as the Fourier transform infrared spectrometer. Although such systems offer high performance, alternative platforms offering reduced size, weight, and cost can enable a host of new applications, e.g. in consumer personal electronics. Here a compact microspectrometer platform for chemical identification, comprising a mid-infrared metasurface integrated with a lightweight (≈1 g) and very small (≈1 cm3) microbolometer-based thermal..